Comparison of samarium cobalt magnets withn eodymium iron boron magnets:
(1) high temperature, anti-oxidation, anti-corrosion ability of different NdFeB iron content is very high, so easy to be oxidized corrosion, so do plating treatment, the service life is largely determined by the effect of the coating! And samarium cobalt iron iron content of only a small part of the basic are not easily oxidized corrosion of rare earth and metal elements, under normal circumstances, do not need to be electroplating; However, the use of the environment is relatively poor or in order to extend the life of landscaping appearance , Do plating treatment will be better!
(2) Ingredients: NdFeB Magnet: Rare earth metal neodymium 29% -32.5% Metal element iron 63.95-68.65% Non-metallic element Boron 1.1-1.2% Add a small amount of dysprosium 0.6-1.2% Niobium 0.3-0.5% Aluminum 0.3-0.5 % Copper 0.05-0.15% and other elements.
Samarium cobalt magnet 2:17: rare earth metal samarium Sm: 23-28% rare earth metal cobalt Co: 48-52% metal element iron Fe: 14-17% metal element copper Cu: 5-7% a small amount of zirconium Zr: 2- 3
(3) performance is relatively different, the overall performance of samarium cobalt magnet than NdFeB weak