Samarium cobalt magnets are also known as samarium cobalt magnets, samarium cobalt permanent magnets, samarium cobalt permanent magnets, rare earth cobalt permanent magnets, and the like. It is a magnetic material made of lanthanum, cobalt and other metal rare earth materials by smelting into alloys, pulverized, pressed and sintered. It has high magnetic energy product and extremely low temperature coefficient. The maximum working temperature can be Up to 350 ° C, the negative temperature is not limited, when the working temperature is above 180 ° C, its temperature stability and chemical stability are more than the NdFeB permanent magnet material.
Sm2Co17 has strong anti-corrosion and oxidation resistance; so it is widely used in aerospace, defense military, microwave devices, communications, medical equipment, instruments, meters, various magnetic transmission devices, sensors, magnetic processors, motors, magnetic cranes Wait.
Corporation developed a high-iron-concentration samarium-cobalt magnet for engines. This magnet is completely free of rare earth element strontium, but its magnetic force is stronger than the heat-resistant neodymium magnet widely used today.
The newly developed high-iron concentration samarium-cobalt magnet uses independently developed heat treatment technology, which makes the samarium-cobalt magnet, which is not as magnetic as a neodymium magnet, have a strong magnetic force beyond the heat-resistant neodymium magnet in an environment above 100 degrees Celsius. In order to increase the magnetic force, the researchers increased the weight ratio of iron from 15% to 20% to 25%, and adjusted the temperature, time and pressure during sintering to achieve the best state, thus reducing the oxidation that hinders the increase of magnetic force. The role of factors and other factors.