Magnet materials: 1)ndfeb material(sintered and bonded) 2)hard ferrite(sr ferrite and ba ferrite) 3)smco(1:5 and 2:17) 4)alnico(casting and sintering) 5)rubber magnet 6)soft magnet(mn-zn and ni-zn) 7)injection magnet(ndfeb and ferrite) Surface treatment: 1)plating (ni, zn, cr, cu, a.) 2)coating(epoxy resin) 3)spray coating(epoxy resin) 1. Bonded ndfeb magnets 2. Sintered ndfeb magnets 3. Ferrites > sintered hard ferrite > soft ferrite-mnzn ferrite > soft ferrite-nizn ferrite 4.Smco magnets 5.Cast and sintered alnico magnets
