Samarium cobalt bar magnets
Samarium cobalt bar magnets are a type of rare earth magnet made from an alloy of samarium and cobalt. They belong to the family of permanent magnets, which are known for their ability to retain their magnetic properties over a long period. Here are some key features of samarium cobalt bar magnets:
1. **High Magnetic Strength:** Although not as strong as neodymium magnets, samarium cobalt magnets are still considered to have high magnetic strength.
2. **High Temperature Tolerance:** One of the most notable properties of samarium cobalt magnets is their ability to perform well at high temperatures, up to 300 degrees Celsius or more. This makes them suitable for applications in which high thermal stability is required.
3. **Corrosion Resistance:** These magnets have good resistance to corrosion and do not typically require additional surface treatments to protect them, unlike other types of magnets like neodymium.
4. **Expensive Materials:** Due to the cost of raw materials, samarium cobalt magnets are generally more expensive than other types of magnets like ferrite or alnico.
5. **Applications:** They are commonly used in applications that require stable performance in extreme environmental conditions, such as aerospace, military, and high-temperature industrial devices.
Samarium cobalt magnets offer a balance of strength and thermal stability, making them ideal for specialized applications where these properties are crucial.