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Samarium cobalt

Samarium cobalt


These are anisotropic substances that produce the highest specific energy.
 
BREMAG 18
 
Samarium-Cobalt alloy has been well known since the 70s. There are two main variants:
 
- the Sm C05 compound, which has a higher coercitive field and is principally used for motors, actuators and demagnetisation fields;
 
- the Sm2 C017 compound, which has a higher flux and is particularly used for audio applications, sensors, etc.
 
Temperature resistance
 
This family is characterised by a good temperature resistance:
 
- 0.04 % / °C on Br, on average,
 
- reversible behaviour up to approximately 120°C, at least,
 
- utilisation is possible up to 260°C (350°C for certain varieties).
 
Mechanical strength
 
Bremag 18 is particularly hard and brittle. It must never be force-fitted.
 
Corrosion
 
Resistance to corrosion is considered to be moderate to good, depending on the environment.
 
Radiation
 
This composition is much more stable than Neodyme-Iron-Boron. But with very high energy values, the presence of cobalt can make handling extremely delicate.
 
Main dimensions
 
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