Ningbo Tengxiao Magnetic Industry Co., Ltd. is a professional supplier of magnetic products and magnetic equipment, specializing in the production of high-quality neodymium iron boron magnets, magnetic badges and other magnetic equipment as well as custom bulk magnetic hooks. The following describes the relevant knowledge of permanent magnet materials.
Permanent magnetic materials, also known as "hard magnetic materials", refer to materials that can maintain a constant magnetic property once they are magnetized. In practice, the permanent magnet material works in the second quadrant demagnetization part of the deep magnetic saturation and hysteresis loop after magnetization. Commonly used permanent magnet materials are divided into Al-Ni-Co-based permanent magnet alloys, Fe-Cr-Co-based permanent magnet alloys, permanent magnet ferrites, rare earth permanent magnet materials and composite permanent magnet materials.
Magnetic material is an ancient and young basic functional material with a wide range of uses. In the long-term development process, its application has penetrated into all aspects of the national economy and national defense. Magnetic materials themselves have also been greatly developed.
The first category is: alloy permanent magnet materials, including rare earth permanent magnet materials (NdFeB Nd2Fe14B), samarium cobalt (SmCo), aluminum nickel cobalt (AlNiCo)
The second category is: Ferrite permanent magnet materials (Ferrite)
According to different production processes, it is divided into: sintered ferrite, bonded ferrite, and injection molded ferrite. These three processes are divided into isotropic and anisotropic magnets according to the orientation of the magnetic crystal.
These are the main permanent magnet materials on the market, and some are eliminated due to the original production process or cost, which cannot be used in a wide range, such as Cu-Ni-Fe (copper nickel iron), Fe-Co-Mo (iron cobalt molybdenum) , Fe-Co-V (iron cobalt vanadium), MnBi (manganese bismuth)
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