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What does the metal alloy magnet include?
The metal alloy magnet includes NdFeB magnets (Nd2Fe14B), samarium cobalt magnets (SmCo), and alnico magnet (ALNiCO).
Ferrite permanent magnet material:
The first is NdFeB magnets. It is the magnet with the highest commercial properties, known as “Magnetic King”, which has a very high magnetic propertie. The maximum energy is higher than ferrite by more than 10 times. Its mechanical properties are also quite good. Maximum working temperature can reach 200 degrees celsius. And its texture is hard, with stable performance, good price, so its application is extremely broad. However, because of its strong chemical activity, so it must do surface coating.
The second is ferrite magnets: its main raw material includes BaFe12O19 and SrFe12O19. It is made byceramic technology. The texture is hard, and it is a brittle material. Ferrite magnets have good temperature resistance, low cost and moderate performance, so it has become the most widely used permanent magnet.
from：http://www.htmagnets.com/newsd-nid-9.html
