Patent ID: 8152936
Filing Date: 2012-04-10
Classification: B22F,C22C,H01F

Abstract:
1. A rare earth including a main phase magnet characterized by being composed mainly of R (where R is at least one element selected from among rare earth elements including Y, and R includes Nd and Dy as an essential element), B, Al, Cu, Zr, Co, O, C and Fe, wherein the content of each element is as follows: R: 25-34 wt % (where Dy content is 0.1-8 wt %) B: 0.85-0.98 wt % Al: 0.03-0.3 wt % Cu: 0.03-0.11 wt % Zr: 0.03-0.25 wt % Co: ≦3 wt % (but not 0 wt %) O: 0.03-0.1 wt % C: 0.03-0.15 wt % Fe: remainder.