Rare earth permanent magnet materials
Rare earth permanent magnet material is now known to the highest-performance integrated a permanent magnet material, the use of the 19th century than the magnetic properties of magnets can be 100 times higher than the ferrite, AlNiCo much superior performance, expensive than the magnetic properties of platinum-cobalt alloy also can be twice as high. As the use of rare earth permanent magnet material, a permanent magnet device not only to promote the development of small, improved product performance, but also helped produce some special devices, rare earth permanent magnet materials appeared, immediately aroused great attention States, growing very rapidly. China's development and production of all kinds of rare earth permanent magnet material has been close to or reached internationally advanced levels.
Now rare earth permanent magnet material has become electronic communications technology to the important material, the use of satellites, radar, and other aspects of the traveling wave tube, in the ring-and micro-motors, micro-recorders, aviation equipment, electronic watches, and other seismograph some electronic equipment. Currently rare earth permanent magnet application has infiltrated into the car, household appliances, electronic instruments, magnetic resonance imaging devices, audio equipment, micro-motor, mobile phones and so on. In health care, the use of rare-earth permanent magnet material "magnetic acupoint therapy," making the effect of greatly enhanced, thus promoting the "magnetic acupoint therapy," the rapid spread. In the use of rare earth in various fields, rare earth permanent magnet material is the fastest growing one. It not only to the development of rare-earth industry bring tremendous impetus, but also for many related industries have quite a far-reaching impact.
Second, the rare earth permanent magnet material classification
¤ø ¤ø 1. Rare-earth cobalt permanent magnet materials, including rare earth cobalt (1-5 type), and rare earth permanent magnet material SmCo5 Cobalt (2-17 type) Permanent Magnetic Materials Sm2Co17 two categories.
¤ø ¤ø 2. Neodymium rare earth permanent magnet materials, NdFeB magnet materials.
¤ø ¤ø 3. Rare-earth Iron nitrogen (RE-Fe-N) or rare-earth iron-carbon (RE-Fe-C) permanent magnet materials.
Third, preparation of rare earth permanent magnet material classification
¤ø ¤ø 1. Preparation of powder metallurgy sintering process of sintering magnet;
¤ø ¤ø 2. Reduction Milling or hydrogen diffusion broken handle powder and powder metallurgy sintering process of sintering magnet;
¤ø ¤ø 3. Rapid solidification milling or hydrogen broken Milling (HDDR), the bonding process of molding powder bonded magnets;
¤ø ¤ø 4. Rapid solidification milling broken or hydrogen (HDDR) Preparation of powder injection injection magnet;
¤ø ¤ø 5. Rapid solidification milling broken or hydrogen (HDDR) powder prepared by hot-pressing pressing magnet;
¤ø ¤ø 6. Press magnets used to conduct thermal deformation of pressure anisotropy of the thermal deformation pressure magnet;
¤ø ¤ø 7. Hot deformation pressure magnet will be made from flour mill, then used methods such as injection molding or 10% of anisotropic bonded magnets.
Tags: neodymium magnets Rare earth permanent magnet,magnet,permanent magnet Smco magnets