neodymium and ferrite magnets

What is the difference between neodymium and ferrite magnets?

The active study of magnetic materials began in the era of the development of electrical engineering when the relationship between the electric and magnetic fields was revealed. Now, no electrical product can do without them.

Nowadays, due to low cost, neodymium and ferrite magnets are most widely used. The first includes three main elements: iron, boron, and neodymium, which is indispensable in the aerospace and aviation industries, as an additive for the production of superalloys. In addition, the metal is widely used for the production of thermoelectric and special dielectric materials, fiber optic devices, as well as colored and painted glass for various purposes.

Both neodymium and ferrite magnet contains a large percentage of iron. In addition, the alloy may include several other elements, such as nickel, titanium, tungsten, chromium, cobalt, aluminum, barium, etc. Doping allows one to obtain the desired physical properties of the alloys.

Neodymium-based magnetic materials have a high value of residual induction and coercive force that keeps domains in an oriented state for a long time, even when exposed to external adverse factors. This is perhaps the main thing that distinguishes a neodymium magnet from the usual one.

The force of attraction of a conventional ferromagnet in ten years is reduced by more than half, while devices from neodymium lose no more than a couple of percents during the same time. Fantastic properties allow scientists and engineers to use materials from rare earth in the responsible nodes of electrical equipment, which requires the constancy of parameters over time. The durability of the alloy makes it possible to save not only on the cost of products but also on their maintenance.

What is the difference between neodymium magnets and ordinary ones? Due to the large residual induction, the neodymium alloy has a relatively large value of magnetization. The large force of attraction of products, with smaller sizes, mass, and relatively low cost, make this type of material preferable.

Neodymium magnet, the difference in characteristics of which compared to other brands of ferromagnets is so significant, can be found everywhere, both in everyday life and in production. The main areas of use: electrical and electronic products, fixing and technological parts, medical and special devices, household products, etc.

Most of the products presented on the website osenc.com are made of neodymium alloy.

China Magnet

Advantages Of Chinese Neodymium Magnets

So far, the greatest force of magnetic products is rare earth magnets. And their basis element is neodymium, in addition, boron and iron are present in the alloy. At the same time, almost all neodymium magnets are Chinese for sale. Lots of people want to ask why. The fact is that it is China is the main supplier of rare-earth elements (in particular, neodymium) on the world market.And there lots of neodymium magnet manufacturer in China. As a result, most of the products from these metals are produced in China.

Features and application
Chinese neodymium has a lot of advantages, the main ones are:
* Maximum magnetic energy;
* Maximum coercive force;
* Maximum residual magnetism;
* Preservation of working properties (for 10 years only 1% of magnetic energy is lost);
* High corrosion resistance;
* The ability to manufacture products of any shape (discs, rings, segments, bars, etc.).

Lots of neodymium magnets from China is normal shape, like Cylindrical,Square, Disc. But as we know in the industry world, in the production we need the custom magnet.  They are very different. Different shape, different magnetic direction and different coating.

But no matter what different it is, they are used in:
* Clamps and clamps (from household tool holders to magnetic clamps of heavy equipment);
* Systems of cleaning, separation, and filtration;
* Metal detectors;
* Hard disk drives and erasing heads;
* Acoustic equipment;
* Turbines and generators;
* Compression, lifting, stepping, and electric motors;
* Medical equipment.
In addition, neodymium is used to produce all sorts of toys and sets for tricks. In everyday life, they are also often used for many different purposes.

Designation and classification
All neodymium magnets – from China, they, or from Russia, it does not matter – they must have an alphanumeric designation describing the main performance characteristics of the product. The letter thus denotes the temperature range in which the magnet retains its properties, the figure – the so-called magnetic energy or the “pull force”.
According to working temperatures, neodymium is divided into the following classes:
* N – up to 80 ° C;
* M – up to 100 ° С;
* H – up to 120 ° C;
* SH – up to 150 ° C;
* UH – up to 180 ° C;
* EH – up to 200 ° C.
Temperatures below zero do not affect the working properties of the neodymium.
When choosing a neodymium magnet from China, one should remember that the separation force depends not only on the physical characteristics but also on the dimensions of the product (more precisely, the area of the contacting surface). For example, a 25×20 magnet comes off easier than a 40×5 magnet, since it has a smaller area of contact with metal. However, due to the longer magnetic lines, its grip strength will be higher.