product name Sintered Samarium Cobalt Magnets(sm2co17 magnets)
SmCo magnets
Sintering SmCo magnets are circularly made by strict powder metal technology and heat processing. This kind of magnet conveys samariam for 35%, cobalt for 60%, element Fe and Cu. Through altering proportioning of compositions and circulation of sintering and heating, we can make two materials— 1: 5 and 2: 17. The difference lies in energy product, temperature coefficient and coercivity. The most common material, 2: 17, has better property and lower temperature coefficient, but it is more expensive and should be magnetized in high magnetic field.
Americans invented SmCo5 and SmCo17 in 1965 and 1972. This invention drives a high wave to study and explore new permanent magnetism, and promote the development of the materical rapidly. This material is produced by powder metallurgy, and its specialty is its magnetic stability, temperature resistance, and excellent resistance of corrosion. Its max magnetic energy prduct is 15~30MGOe which is 3~5 times to AlNiCo magnets. Its intrinsic coercivity is over 25kOe, and its highest working temperature is 350º C. SmCo magnet is very suitable for manufacture the products with high-performance like magnetic motors and other applied products requiring high working temperature.
Samarium Cobalt permanent magnet is widely used second generation high energy material. Using Samarium and Cobalt as its rare earth element, it exhibits high magnetic performance characteristics in energy product and coercive force. There are two compositions of magnets in this family: Sm1Co5 and Sm2Co17. The highest commercially available energy products of Sm2Co 17 are in the 30MGOe range.
Features of SmCo Magnets
SmCo magnet is high performance, low temperature coefficient permanent.
Its biggest advantage is high working temperature-300 degree centigrade, this makes Samarium Cobalt an excellent choice for compact designs where high temperature environments may be present.
Good corrosion resistance and no need to be coating, because it is difficult to be eroded and oxidized.
Grinding and slicing can be operated into the desired shape and size.
Application of SmCo Magnets:
SmCo magnet is widely used in motors, watch, transducers, instruments, positional detector, generators, radar, etc.
WARNING:
Due to their extremely high magnetic strength and brittle nature, SmCo magnet parts must be handled very carefully to prevent injury to personnel and damage to the magnets. Receiving and assembly personnel must be pre-warned about the dangers of handling these magnet parts.
