Introduction:

Samarium cobalt magnet is a kind of rare earth magnet. It is a kind of magnetic tool material made of samarium, cobalt and other metal rare earth materials through proportioning, melting into alloy, crushing, pressing and sintering. High magnetic energy product, extremely low temperature coefficient, the maximum working temperature can reach 350 ℃, and the negative temperature is not limited. When the working temperature is above 180 ℃, its maximum magnetic energy product (BHmax), coercivity (coercivity) and temperature stability and The chemical stability exceeds that of NdFeB permanent magnet materials. It has strong corrosion resistance and oxidation resistance; so it is widely used in aerospace, defense industry, microwave devices, communications, medical equipment, instruments, meters, various magnetic transmission devices, sensors, magnetic processors, motors, magnetic cranes Wait. The maximum energy product (BHmax) of samarium cobalt magnets ranges from 16 MGOe to 32 MGOe, with a theoretical limit of 34 MGOe. Samarium cobalt magnets have two composition ratios, which are (samarium atoms: cobalt atoms) 1:5 and 2:17.

Hazards:

Samarium cobalt magnets are easily chipped. Goggles must be worn when handling them.

Breaking the magnets together can cause the magnets to shatter, which can be potentially hazardous.

Samarium Cobalt is manufactured by a process known as sintering, and all materials are sintered and there is a high chance of cracks developing inside. The magnet does not have mechanical integrity, but only has the function of preparing a magnetic field. Therefore, special mechanical systems must be designed to give sufficient mechanical reliability to the overall system.

Attribute:

1. Very good coercivity.

2. Good temperature stability (maximum operating temperature is 250 to 550°C, and Curie temperature is from 700 to 800°C).

3. Expensive and vulnerable to price fluctuations (the cobalt market is price sensitive).