Surface magnetism, also known as surface magnetic field, refers to the magnetic induction intensity at a certain point on the surface of the magnet, and the unit is Gauss Gs or Tesla T (1T=10000Gs). The parameter of surface magnetism is easy to measure. When the size of the magnet is determined, people often judge the performance of the magnet by comparing the surface magnetism. When encountering ...
People familiar with magnet materials must have heard of Al-Ni-Co magnets. Alnico permanent magnet material is an alloy composed of metal aluminum, nickel, cobalt, iron and other trace metal elements. Al-Ni-Copermanent magnet material is the earliest widely used permanent magnet material, and its preparation process and technology are quite mature. Before the discovery of rare earth perm...
We have been trading in the magnet industry for many years. A small number of customers indicated that the magnetic force of the permanent magnets they purchased was attenuated, and they usually suspected that it was the quality of the product itself. In fact, the quality of our products can stand the test of the market.Today let's take a look at what factors lead to demagnetization of permanent m...
If you've ever purchased a NdFeB magnet, you surely know that almost all NdFeB magnets have a coating, so why don't ferrite magnets need a coating? First of all, let us know about ferrite magnets, which are non- metallic magnetic materials, also known as magnetic ceramics, so there is basically no corrosion problem. It can be seen everywhere in life. For example, the speaker magnet in the radio is...
The coating of NdFeB magnets is to add a protective layer on the surface, which plays the role of anti-corrosion, anti-rust, and prolonging the service life. There are three most common coatings for NdFeB magnets, namely zinc plating, nickel plating, and epoxy coating. 1 In terms of price, galvanized coating is extremely advantageous, and the prices are ranked from low to high as zinc, nickel, and...
What factors affect the price of magnets?Why are the quotations of magnets of the same material different?Many novice buyers will have many such questions, and now I will answer them in detail. The quotation of magnets mainly depends on three factors, the purchase quantity, the specification shape, and the tolerance. The smaller the quantity, the higher the quotation; the more complex the shape, t...
Magnetic materials are now mainly divided into two categories, one is soft magnetic materials, the other is hard magnetic materials (permanent magnetic materials). Soft magnetic material: high permeability, easy to be magnetized and easy to demagnetize. In the saturation state, the magnetic flux is large, the coercivity (Hc) is small, the total area of the hysteresis loop is narrow and long, and t...
Have you heard of isotropic magnets and anisotropic magnets? What are the connections and differences between them? In simple terms, magnetic materials fall into two categories. One is an isotropic magnet, which has the same magnetic properties in any direction and can be magnetized in any direction. The other type is anisotropic magnets. Anisotropic magnets have different magnetic properties in d...
