What are neodymium magnets made of? Neodymium magnets: reviews and appointment. Search and collection of metal objects

Magnets continue to gain popularity. They are used in an extremely wide area. IN more magnets are used today in the field of creating souvenirs.

However, neodymium magnets have outstanding characteristics that cannot always be applied within the law.

First of all, it is worth noting that neodymium magnets are the best magnets that can be produced today. They do not demagnetize even after 100 years. In addition, neodymium has no equal in terms of the strength of creating a magnetic field!

Neodymium magnets are often referred to as:

• supermagnet;
• absolute magnet;
• best magnet
• magnet for braking counters.

If you see marked positions somewhere, then you are being sold a neodymium magnet. In addition to himself, a small part of iron, as well as boron, is included in the composition of the magnet.

Neodymium magnets are widely used for fixing various elements. Magnetic fasteners vary in weight that they can withstand. You can find options that can even hold curtains with curtains.

The strength of a magnet largely depends on the concentration of neodymium in its body, as well as on the very dimensions of the magnetic body.

Traditional science has proven that neodymium magnets (of any strength) are absolutely safe for the human body. Some even believe that magnets can be useful in the treatment of certain psychological illnesses or in the treatment of migraines.

However, there is no hard evidence for this.

In addition, in everyday life, strong neodymium magnets are often used to effectively brake meters (electricity, water).

It must be emphasized that this is a violation of the law. If the controller finds out that a magnet was used, a very significant fine will be issued (This is the best case ... It all depends on the amount of fraud).

For a long operating period, neodymium magnets are protected with a special coating (zinc, nickel, etc.). If you intend to use the magnet in a humid environment or in temperatures above the 100 degree Celsius threshold, nickel plated magnets are highly recommended. Galvanized can quickly become unusable.

Representatives various industries and private consumers have completely different ideas about what a neodymium magnet is and what it is for. This rare earth super magnet is made from an alloy of neodymium, iron and boron. Its main advantages are unsurpassed indicators of durability and magnetic force.
Even very miniature products hold large objects with a weight that is an order of magnitude greater than their own. For example, a neodymium magnet disk 60x30 mm with a weight of 636 g holds a weight of 118 kg.

Neodymium magnet. Why is it needed

Given the unique magnetic properties of the neodymium-iron-boron alloy, this material has become completely indispensable in many areas. Here they are far from complete list:

1) Search work. To detect metal objects in water bodies, the services of divers are no longer needed, because with the help of a compact search magnet you can get objects weighing 300-400 kg and even more from the bottom. The search magnet itself is a disk neodymium magnet in a steel protective casing with one or two eyebolts.

2) Detection of small objects. In a carpentry or locksmith shop, as well as in an auto repair shop, small nuts or bolts can regularly fall and roll into hard-to-reach places. Easy-to-use telescopic devices or flexible models with a neodymium magnet at the end allow you to return a lost object in a matter of moments.

3) Tests in laboratory conditions. A miniature source of the strongest magnetic field is absolutely indispensable for scientific experiments of various kinds. Liquids passing through neodymium ring magnets acquire new properties.

4) Industry. What are neodymium magnets for? modern productions? They find their application in the manufacture of electromagnetic devices, medical equipment and many other products. Neodymium countersink magnets are used in construction, interior decoration, for assembling advertising stands, etc.

5) Alternative energy. The material's strongest induction properties make it an excellent solution for generators in wind turbines, hydroelectric power plants and other facilities.

6) Fixing objects. Answering the question why neodymium magnets are needed in the domestic sphere, one cannot fail to mention the wide possibilities for attaching objects. With their help, you can fix keys or tools on the wall. In addition, compact magnets allow you to wear a badge without damaging the fabric, or even get yourself pierced without violating the integrity of the skin.

Profitably order neodymium magnets of various capacities

To get your own answer to the question of what a neodymium magnet is and why this material is needed, order a compact product in the World of Magnets online store and see for yourself in its excellent performance. Even a miniature magnet will become your indispensable assistant in finding small items (for example, keys or hardware), and will also be used for many other useful things.

This topic can be developed as much as you like - magnets are a unique entertainment for children and adults. Just please remember safety precautions.

Puzzles, various "hanging in the air" objects, unusual sculptures, games with magnets - it attracts attention so much that even adults are happy to have fun with magnetic cubes, supermagnet balls, disks, rings and cylinders. Send your ideas and photos of your creations - let others envy and want to repeat it themselves!

Clamps and fixation

Super magnets, which are neodymium magnets, are ideal and compact "fixers" and clips. The force developed by such a magnet is sufficient to replace a clamp or vise. If you need to glue something, then you can put the parts to be glued between two such magnets and thereby ensure a reliable clamping of the parts until they are completely glued. What is very important - such a clamp "takes into account" the shrinkage and punching of the material, so that during the entire time of gluing, the compression force does not decrease. It is also very convenient to use a lot of magnets for gluing or holding parts of complex shape - you get a lot of "clamps" that allow you to apply force even where it is impossible to climb with a conventional clamp!

example of load handling in production using permanent neodymium magnets:

Purification of engine and transmission oil

It is no secret that the main reason for the wear of the rubbing parts of motors, internal combustion engines, gearboxes and automotive gearboxes is the deterioration of the quality of the oil, in particular, due to the accumulation of metal particles in it. Many of these particles easily pass through oil filters and become a real abrasive, accelerating the wear of parts like an avalanche. The use of compact, heavy-duty magnets allows these particles to be “trapped” and securely held where they can be easily removed. It is enough to fix such a magnet on the drain plug of the crankcase of an automobile engine, and all wear products of parts will instantly stick to this magnet. When changing the oil, they can be easily removed. Given that the operating temperature of the oil of internal combustion engines exceeds 90-100 degrees, it is recommended to use high-temperature magnets for these purposes (with a material index containing the letters SH).

Search for steel objects

Many today are looking for treasures. Super magnets are the ideal device for finding steel and iron objects in sand, soil, walls, floors. It is enough to let the magnetic ball across the floor and it will immediately "feel" all the nails and screws. If you tie a ring magnet to a thread, it will become a convenient “search engine” for finding objects (for example, reinforcement) in walls, in the floor, in the ground.

Magnetotherapy

To date, doctors and biologists are increasingly inclined to believe that the magnetic field of a permanent magnet has a beneficial effect on the human body. Many scientists believe that in modern world we lack the influence of the Earth's magnetic field, which not only became weaker in itself during the existence of mankind, but is also significantly weakened by reinforced concrete structures, "short-circuited" near the earth's surface by various pipelines and rails. There is a lot of evidence that exposure to a constant magnetic field normalizes blood pressure, improves the permeability of capillaries, and various intracellular processes in the body. There are known cases of improved vision, memory, metabolism, accelerated healing of wounds and trophic ulcers, retreat of many incurable diseases. We do not assume the role of experts in this matter and invite you to familiarize yourself with the information on magnetotherapy and magnetotherapy. And when you decide to buy magnets for this - contact us!

Focuses and tricks

You can't even list how many different tricks you can do with heavy-duty neodymium magnets! They are so strong that they can influence each other at a very large distance, causing objects in which such magnets are hidden to move. Particularly powerful magnets can attract an object so strongly that it will fly a fairly long distance through the air (remember safety precautions)

We have magnets so powerful that when placed in the soles of shoes, they can be so strongly repelled by the same poles from other magnets, for example, those located on the floor (requires secure attachment to the floor! you can use special super magnets with a hole for fasteners) that with some skill you can "hang" in the air without touching the floor!!!

Restoring the magnetic properties of other magnets

Many magnets lose their magnetic properties over time. Neodymium magnets are very durable. They are almost impossible to demagnetize or remagnetize. In this sense, they are "afraid" only of high temperatures, over 80-90 degrees Celsius. In contrast, Alnico magnets (AlNiCo, UNDK) withstand quite high temperature, but very easily remagnetized under the influence of an external magnetic field. Strontium magnetoplasts are also subject to re- and demagnetization. With the help of a powerful neodymium magnet, you can easily magnetize both such magnets and turn any object made of hard steel into a fairly strong magnet - a screwdriver, knife, needle, file.

Search for treasures and lost items underwater

For those who are searching for treasures, weapons, equipment, located deep under water, covered with silt and bottom sediments, the supermagnet is a wonderful tool for both searching and raising such objects to the surface! In our store you can find such magnets that can lift objects weighing 200-300 kilograms from the bottom! To increase the lifting force, you can use several magnets mounted on the same base.

Fixing signs, plates, etc. on cars

Do you need to securely fasten something to the roof or other part of the car? Antenna, sign, sign? You can easily do this by using our magnets! They will securely hold any object even on high speed movement. The main thing is to choose the right one, but in our store there are no problems with the choice, the problem is to make a choice! :) Remember that a strong magnet can damage the surface of the car, so be sure to protect it by sticking felt or rubber on the magnet. In addition - when choosing a magnet, remember that too powerful magnets can be so strongly attracted to the body that it can only be torn off by stretching the metal - so know the measure

Fixing devices and fixtures

There is nothing special to say here - we just fix the magnets either on the surface or on the device itself, and as a response magnet - either the body of the device itself, or another magnet, or a plate of transformer steel and your device can be easily fixed and just as easy if necessary take off!

Fixing items in the kitchen

Knives, forks, spoons (even stainless steel) - even pots and pans! Everything can be conveniently and securely placed even on the walls, even on the ceiling! We have inexpensive long magnetic strips in the store that can be turned into holders for knives and other items in the most convenient places. And also - it is very convenient to sew a small magnet into the kitchen "tack" for hot - then it can always be at hand - just slap it on the stove!

Repair of wind musical instruments

Oh, how much trouble these eternal dents on trumpets, saxophones and others give musicians musical instruments made of thin metal. And the main problem is that straightening such dents can be very difficult due to the fact that it is difficult to get to the right place. How can you hit or press from the inside of a thin curved tube?! Very simple! Take a steel ball of the required diameter, take our supermagnet and - you're done! The ball is “guided” by a magnet along the tube to the desired place with a slight attraction, and when it reaches the dent, it is enough to attach the magnet to the surface and move it along the dent. Ball attracted with great strength from the inside, it will perfectly level the surface, and the magnet itself will not allow it to make a “bulge”! This repair only takes a few seconds! Then the ball is removed from the tool in the same way.

Experiments with magnetic levitation

Attaching tools (and even a bike) in the garage

See Fixing Items in the Kitchen

Destruction of video, audio recordings and data on magnetic media

Today, magnetic storage media are giving way to more modern ones. And we transfer data, video, audio to DVD, to computer hard drives, and all these video cassettes, floppy disks, and so on. send it to the trash. However, we do not always want what is written on them to fall into the wrong hands. The Internet is full of private erotic videos that have been stolen from unsuspecting people in this way. What about information? It is important to understand that even if you tore and tangled the film, crushed and even scratched the floppy disk, you can still count a lot from them if you wish. But if you process them with a superstrong magnetic field, the information will be irretrievably destroyed. Our heavy duty magnets are quite suitable for this purpose. If used correctly, although they do not replace professional degaussing systems, they will allow you to be sure that your private video or valuable information will never fall into the hands of intruders.

Attachment of wings on model aircraft

How often do modellers have to repair those thin foam wings? If you are an aircraft modeller, then you know how easy it is to break them during a bad landing! And yet - how convenient it would be if you could easily detach the wings when transporting the model, and then securely and quickly fix them back! All this can easily be done with our miniature, lightweight and at the same time - very powerful magnets! Such mounts are very light, reliable, durable and safe. You can choose the power of the magnets in such a way that they securely hold the wing in flight, and when it hits the ground, they allow it to "fold" without costly and painstaking repairs!

Magnetic latches for furniture

A conventional magnetic latch requires “inconvenient” technological operations when assembling furniture: at least 3 screws will need to be screwed in. We have various sizes of cylindrical magnets in our assortment, which can simply be driven into a hole like pins and the magnetic latch is ready! 2 holes, 2 strikes! In mass production - very cheap products! Reliable, strong and inexpensive! Ay! Furniture makers! We are waiting for your orders! Possible good discounts for wholesale lots of magnets!

Attach nameplates without damaging clothing

Have you ever tried attaching a "badge" to a thin silk blouse? What a clothespin, what a pin - will leave an indelible mark and can completely ruin a beautiful thing. Use our little magnets! You can even use them with regular badges. A small magnet is placed on the wrong side of the clothes, on the front side, bring a clothespin or name badge pin to it and you're done! The plate is firmly held, and the clothes remain intact!

Magnetic locks for railway models

Our customers are always coming up with new applications for super magnets. For example, one of the lovers of models railways, uses them as hitch locks for trailers and to secure environmental items to models.

Magnetic stirrers

Often you need to mix something in a vessel, which must be hermetically sealed. For this, it is convenient to use magnetic stirrers, as in laboratories. You can put a magnet in such a vessel (directly or by placing it in some kind of shell) and by acting on another magnet from the outside - mix the contents of the vessel without opening it. Our magnets are powerful enough to stir even very thick liquids like epoxy, hardened paints, sand and concrete! The main thing is that the vessel should not be made of steel!

Homemade Super Compass

Have you ever felt the Earth's magnetic field directly?! Our super-strong magnets allow you to really feel how they tend to turn in the north-south direction! You can even feel it with your hands! You can make a large compass for demonstration, you can use a small powerful neodymium magnet as an arrow for a regular compass.

Electric generators

Neodymium magnets are a real find for those who build various kinds of generators electric current! With such a high induction, they are extremely small in size, have the highest stability of parameters and make it possible to build compact, lightweight and very powerful generators for wind turbines, hydroelectric power plants and other alternative energy facilities.

scientific experiments

Are comments needed here? Wherever a light, compact source of an extremely strong permanent magnetic field is required - neodymium magnets are beyond competition!

Search for micrometeorites

One of our customers wrote to us that he is purposefully searching for iron micrometeorites with our magnets! And that it was with their help that he already found many new samples in his collection! Surprisingly, but a fact: every day hundreds of tons of micrometeorites fall on the surface of our planet! Most of them end up in the ocean, but many fall on solid ground. For hundreds of years, so many of them fall that it is safe to say that on every square meter of the earth's surface, one must have fallen once.

Educational goals

Stop using those ugly "horseshoes" in the classroom that are barely able to deflect the compass needle! In the yard of the XXI century! If you don't show your students something really impressive today, their interest in physics will never become as strong as their interest in mobile entertainment and computer games. If you are a physics teacher, then there is nothing more suitable than neodymium magnets to demonstrate to your students the principles of magnetic induction, the interaction of magnetic fields and other exciting experiments! Your students will be delighted and will love physics as much as you love it!

Magnetic decorations

Magnetic bracelets have already been mentioned here. From magnetic balls and cylinders, squares and cubes - you can collect amazing decorations! Bracelets that in one movement turn into necklaces or chains around the neck, with or without pendants. You can combine different magnets, creating beautiful beads, sheathe magnets different materials(fabric, leather, fur, flocking, etc.) or just leave them shiny - white or gold! Thousands and thousands of options, each of which is not just a decoration, but also an exciting "constructor" puzzle, a stress reliever and entertainment! And about the benefits of magnets - it is written above.

Holeless piercing

Want to hang something shiny in your ear or on your nose, but don't want to make holes in your beautiful body? Right! You never know, suddenly you don't like it, but the hole remains. Moreover, with perforation of the skin, various complications are possible, it is painful, and most importantly, what kind of infection will get? Check out our magnets! On one side of the earlobe is a golden ball, and on the other, for example. Or cylinders. Or cubes. They can themselves serve as a beautiful decoration, earrings, "carnations", pendants. And you can use them to fix any other objects on the skin. It is only important to choose the right strength of the magnets so that they hold tightly and do not pinch the skin and do not worsen the blood supply to the tissues.

Cleaning aquariums and other containers

Very comfortably! For those who have an aquarium, you can easily clean its walls without even getting your hands wet! One magnet is inside the aquarium, with a sponge or rubber band attached to it, or something else for cleaning the glass from algae and dirt. And outside - the second magnet. You move the magnet that is outside, and the one that is inside is pressed with force by the magnetic field against the glass and moves after the first one! Just make sure that the magnet does not “fly” to the glass, lean it carefully, otherwise it will break.

Spare key storage

Sometimes we need to securely hide spare keys from the house, from the car. In case we forget, if we lose, to be able to get home or open the car. How to do this so that they can be easily obtained by you, but so that they do not fall into the hands of a thief? Very simple! In the car - you can fix them with a magnet somewhere on the inside of the wing, on the bottom - our super magnet will not let them come off even with very strong shaking on the road. Near the door - find some slot into which you can “push” the key with a magnet, for example, behind the baseboard. If necessary, it will be possible to get the key by running the same magnet along the plinth. The main thing is to imperceptibly attach the magnet itself somewhere.

Water conditioning (magnetization)

There is a lot of evidence that ordinary water, exposed to a strong magnetic field, acquires many new properties. The formation of hard scale on the walls of kettles, hot water boilers and in heating systems is reduced. Magnetized water accelerates the growth and increases the yield of many plant species. When treating wounds with magnetized water, healing is significantly accelerated and subsequently scars and scars disappear faster. Tea brewed with magnetized water is very different in taste, strength and smell from the same tea brewed with ordinary water. It is reported by many sources about improving well-being, strengthening immunity and resistance to fatigue in those who consume magnetic water. We, as in the case medical use supermagnets - we do not consider ourselves experts in this field, but ourselves - we use our own magnets for water treatment. Scale really becomes much less. As for the rest - read the relevant materials on the Internet yourself. We have magnets in our assortment that allow you to create very powerful magnetic fields and from which you can make devices for magnetizing water both at home and on an industrial scale.

Fuel conditioning (gasoline saving)

Haven't personally checked. But many sources report that with the help of a strong magnetic field it is possible to create conditions for the "polarization" of gasoline hydrocarbon molecules, as a result of which the quality of the fuel combustion process in the engine is significantly improved. Manufacturers of such magnetic devices authoritatively claim saving up to 15% of fuel, improving engine performance over the entire speed range, and increasing the power of an internal combustion engine. We have magnets from which you can easily assemble such devices. It will cost you much less than buying ready-made fixtures of dubious quality. Try, experiment and be sure to let us know about your results!

Cleaning up metal debris

Steel shavings are the scourge of many industries. In jewelry, it can cause a deterioration in the quality of precious metal alloys; in factories and workshops, it can cause injuries. It is quite difficult to remove it. However, with the use of powerful neodymium magnets, this task becomes extremely simple. We place the magnet in the bag of the right size and bring the bag to the place where you need to collect steel chips and it is instantly attracted to the magnet in the bag! Now it is enough to turn the bag inside out so that the magnet is outside and the chips are inside. We separate the magnet - that's it! All chips - remained inside the bag, and our magnet - clean!

Sorting and separation of metal steel objects and materials

For various conveyors, especially for removing steel objects from flour, cereals and other food products! Fragments of steel cables, springs and other items often get there - needles, wire ... It is enough to fix a supermagnet next to such a conveyor and it will become easier to find a needle in a haystack or in a ton of flour!

Accelerating the maturation of wines and liqueurs

We haven't personally checked it, but one of our customers reported that he is a wine collector and makes various wines, liqueurs and other drinks himself. According to him, using our magnets, he creates a particularly powerful magnetic field, in which the maturation of wines and liquors is many times faster! Thus, wine aged in a magnetic field for a month acquires the same taste properties that it usually acquires within two or three years! By the way, Valery - we would love to taste the results of your experiments!

"Perpetual motion machines" and other experiments

Well, what can I say? Classical physics says one thing, but at the same time on the Web we can find great amount various designs, many of which work (according to their authors and witnesses) contrary to all the canons of physics! Searle generators, various kinds of magnetic motors, resonant vacuum generators and other designs - you can't count everything. And many of them use exactly the same magnets as those presented in our store. Try! Invent and do not listen to skeptics - Columbus and Galileo, the Wright brothers and Einstein - everyone also considered crazy! Dare! And with magnets - we will help!

Everyone at least once heard the expression - a neodymium magnet. But not everyone knows what it is and what it is “eaten with”.

But in fact, almost everyone met with this subject, they simply did not know its correct name. What is it?

What is this magnet and what is it for?

Neodymium magnets appeared relatively recently, in the 90s. They are made from neodymium, iron and boron.

Neodymium belongs to the metals of the lanthanide group and is the main component of the magnet, which has that incredible

Such magnets can be found in old hard drives.

grip force. Large magnets cannot be torn apart by an ordinary person.

Naturally, a common person meets contented little variants of this subject. But pleasure is not cheap. Neodymium products are expensive due to the expensive mining process.

If you look around, you can see how many objects with this magnet surround us. This is a hard drive in a computer, and household appliances, and generators. They are also used in filters in various industries.

Varieties of magnets

The shape and size of the future magnet is laid down at the production stage. Neodymium, iron and bromine are ground into powder, then poured into special molds.

The resulting neodymium alloys undergo a magnetization process. After that, they are covered with nickel, and super-powerful products are obtained.

There are several types of magnets, differing in size, and, accordingly, in the power of adhesion:

1. Small-sized– small magnets. They are used in the manufacture of souvenirs, toys and even jewelry. Small magnets are found in some actuators, linear motors, and magnetic locks. Small size magnets have a high degree of adhesion.
2. oversized magnets can be quite large. For example, rectangular ones reach sizes from 5 cm in length and width and 2.5 cm in height. Such a magnet is able to withstand a load of 125 kg. They are widely used in industry and at home. Magnets in the form of disks and rings are used as holders and magnets.

Scope of application

Neodymium magnets are widely used in everyday life and other areas of life.

Savings on bills

With a neodymium magnet.

Fixing items

Neodymium magnets are used as clamps and clamps. The forces that such magnets can give are strong enough to be a substitute for a clamp or vise.

By placing the parts to be glued between the magnets, a secure fixation can be ensured. It is important that this type of clamp responds to shrinkage and punching of the object, so the compression will not weaken during gluing.

If you use several magnets, you get several clamps that can hold large objects. For example, in various industries they are used to lift heavy loads.

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Engine oil cleaning

Most of the rubbing parts of motors, internal combustion engines, gearboxes and automotive gearboxes run on oil.

The deterioration of the quality of the oil occurs due to the accumulation of small metal particles in them. They penetrate even through oil filters, becoming a kind of catalyst that accelerates the wear of parts.

When using powerful magnets, particles will stick to it and be easily removed. This allows you to increase the service life of many parts.

For example, if you install a magnet on the crankcase drain plug during an oil change, the magnet, along with the particles, is very easy to remove. But you need to know that the oil temperature of internal combustion engines is quite high, so you need to use high-temperature magnets. Such magnets have the index SH.

Search for steel objects

The product will allow you to "find the treasure" in the form of small bolts, needles, nails. You just need to take a ball magnet and put it in the place where you are looking for the item.

It will certainly attract even the smallest things. A magnet tied to a thread in the form of a ring will help you find iron objects in the wall, floor or ground.

Help in the treatment of diseases

Many doctors and scientists believe that the magnetic field of a permanent magnet has a beneficial effect on the human body.

They are sure that Lately the Earth's magnetic field has become much weaker, this happened due to numerous reinforced concrete structures that negatively affect it. This field is no longer enough for a person.

But it is it that is able to normalize blood pressure, improve the permeability of capillaries, various intracellular processes in the body.

It is not uncommon for magnetic therapy to help improve vision, memory, and also increase the rate of healing of wounds and ulcers.

Focuses and tricks

There are many different tricks using the unusual properties of this magnet. Their force of attraction is so great that even at a fairly large distance they will act on each other, forcing the objects in which they are hidden to move.

For example, using heavy-duty magnets, you can make an object fly a certain distance. It is important to remember about safety at this time.

Using a magnet, you can erase information from video, audio and other media. After exposure to a magnet, it is no longer possible to restore it.

Toys

Magnets are also used in the production of children's toys.

For example, neodymium-based constructors are quite popular. From them it is possible to assemble spatial structures.

Or an unusual neocube toy.

Its basis is spherical magnets, which are connected using their own force of attraction.

Here's how a 50x30 neodymium magnet works:

Safety in use

Before using items made on the basis of this magnet, you need to learn a few safety rules:

1. Keep magnets away from children. Often they swallow them, and this can cause many life-threatening complications.
2. Due to the fact that magnets have strong adhesion, if handled carelessly, can pinch fingers or skin which can lead to bruising. And if the magnet is large, and as a result, power, a fracture can occur.
3. People with a pacemaker also need to be careful with neodymium magnets.. They can put the stimulator into test mode. This can make a person feel unwell.
4. Using magnets to lift weights, take into account the load that they can withstand. If this rule is not observed, the load may fall off and cause serious injury.
5. Despite its rather decent weight, magnets are fragile. In a sharp collision, they can break. The fragments scatter several meters. Being close, you can get cuts and bruises.
6. Magnets cannot be processed without the use of water and special tools. The shavings are highly flammable and may cause a fire.
7. Most magnets are nickel plated. This can cause allergies.

Product cost

The price of a neodymium magnet directly depends on the power that you need.

For example, a magnet capable of lifting 95 kg will cost around 1300 rubles, 200 kg - 3500 rubles.

Neodymium magnets are permanent magnets made up of rare earth elements. They are used in many areas, but can cause injury if mishandled.

Neodymium magnets, also called neo-magnets, are an alloy of neodymium, iron and boron. Their chemical formula is presented as Nd2Fe14B. They are called rare earth magnets because their main element, neodymium, falls into the lanthanide series of the periodic table. Chemical elements of this series are mostly rare on Earth. Although this element is part of this series, it is not so rare on the earth's surface.

Story

Neodymium (atomic weight 60) was discovered in 1885 by an Austrian scientist named Baron Karl Auer von Welsbach. The cost of permanent magnets - samarium cobalt (SmCo), which were developed earlier, was too high. Thus, the need to find a more economical option led to the discovery of neodymium magnets.

Properties

They are very strong compared to their size. One such magnet can support the weight of the material, more than 1300 times its own weight. They are caustic and brittle in nature and are always supplied with a protective coating. Their strength lies in the range N24-N55; N55 is the strongest. The crystal structure of Nd2Fe14B has a tetragonal shape.

Let's take a look at the terms associated with magnetism:

• Curie temperature: is the temperature beyond which a magnet loses its magnetic properties.
• Coercivity: This is the intensity of the magnetic field to the demagnetization of the magnet, i.e. the energy of the magnetic field, which causes the magnet to lose its magnetic properties. This is also referred to as the magnet's resistance to demagnetization. The higher the coercive force, the stronger the magnet.
• Remanence: the magnetic effect that remains in the medium after the removal of the magnet.

The table below provides a summary of the magnetic properties of magnetoplasts and neodymium magnets:

Application

They have a wide range of applications in future technologies, due to their economic cost and useful properties. Music systems, technical and computer equipment are some of the fields where these magnets can be applied.

The following list gives a brief idea of ​​their application:

• Security systems
• Loudspeakers
• Computer hard drives
• Magnetic resonance imaging (MRI)
• Household purpose (for storing metal objects)
• Toys
• Magnetic therapy for diseases such as arthritis

dangers

Since neodymium magnets are the strongest permanent magnets, they must be properly handled and handled with care. They are very strong; two such magnets of opposite polarity can be broken apart when attracted to each other. They should always be kept away from small children who have a habit of swallowing things; if they swallow two such magnets of opposite polarity; may cause serious injury internal organs such as the esophagus. The sudden attraction of a large magnet to metal objects can cause serious injury such as broken bones. Data stored on floppy disks, CDs, hard drives and credit cards can be erased if they come into direct contact with these magnets. They should be kept away from electronic devices such as televisions and computer monitors. Pacemakers do not function properly in the presence of any magnet, so the person using this device should not come into contact with these magnets.