R-T-B-M-C Sintered Magnet And Production Method And An Apparatus For Manufacturing The R-T-B-M-C Sintered Magnet

摘要

The present invention discloses an R-T-B-M-C sintered magnet and a method for manufacturing the R-T-B-M-C sintered magnet from an R-T-B-M-C alloy powder including the lubricant. The present invention also discloses an apparatus for manufacturing the R-T-B-M-C sintered magnet from the R-T-B-M-C alloy powder including the lubricant. The apparatus includes an alloy powder feeding mechanism for distributing the R-T-B-M-C alloy powder including the lubricant, a filling mechanism including a mold for receiving the R-T-B-M-C alloy powder including the lubricant, a press mechanism for compressing the R-T-B-M-C alloy powder including the lubricant and a stacking mechanism for storing the mold including the R-T-B-M-C alloy powder including the lubricant.

主权项

1. An R-T-B-M-C sintered magnet made from an R-T-B-M-C alloy powder comprising;
R being at least one element selected from rare earth metal elements including Yttrium and Scandium and present in an amount of 25 wt. %≦R≦40 wt. %, T being Iron or a mixture of Iron and Cobalt and present in an amount of 60 wt. %≦T≦74 wt. %, M being at least one element selected from Ti, Ni, Nb, Al, V, Mn, Sn, Ca, Mg, Pb, Sb, Zn, Si, Zr, Cr, Cu, Ga, Mo, W and Ta and present in an amount of 0 wt. %≦M≦2 wt. %, B being Boron and present in an amount of 0.8 wt. %≦B≦1.2 wt. %, C being Carbon and present in an amount of 0.03 wt. %≦C≦0.15 wt. %, and a lubricant being present in said R-T-B-M-C alloy powder in an amount of between 0.05 wt. % and 2.0 wt. %.