Samarium Cobalt Magnets

Samarium cobalt block magnets (also known as smco magnet): one of the two types of rare earth magnets is a strong permanent magnet made of an alloy of samarium and cobalt. They were developed in the early 1970s. They are generally the second-strongest type of magnet made, less strong than neodymium magnets, but have higher temperature ratings. They are expensive, brittle, and prone to cracking and chipping. Samarium-cobalt magnets have maximum energy products (BHmax) that range from 16 megagauss-oersteds (MGOe) to 32 MGOe; their theoretical limit is 34 MGOe. They are available in two ''series'', namely Series 1: 5 and Series 2: 17.

Samarium cobalt rare earth magnets Features & Characteristics

Samarium Cobalt Magnets (SmCo) magnets feature excellent temperature stability while retaining their magnetic properties under extreme temperature conditions. Thus, they are very suitable for applications involving high or extremely low temperatures.

SmCo magnets have high coercivity (Hci) to resist demagnetization.

Samarium cobalt ring magnet have good corrosion resistance. Sm1Co5 does not rust because it does not contain iron. However, Sm2Co17 should be coated with a protective coating in very wet conditions to minimize the risk of surface corrosion. However, Sm1Co5 does not rust because it does not contain iron.

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