SmCo magnet

Sintex? - Permanent Magnets

SmCo magnets are produced by powder compaction followed by a sintering process.

Mainly because of the cobalt contents of the magnets, these types of magnets are a more expensive solution. They are for example much more expensive than sintered NdFeB magnets, which typically have the same magnetic strength.

Samarium cobalt magnets do not corrode easily but for medium to very corrosive environments some kind of surface treatment or sealing is recommended.

The advantages are: 1) High magnetic strength (In the same range as sintered NdFeB magnets), 2) High resistance to demagnetisation, 3) Very high working temperature (typically up to 250-350?C), 4) High temperature stability, 5) Good corrosion resistance