| 摘要 |
PROBLEM TO BE SOLVED: To provide an SmFeN bonded magnet, having magnetization properties and irreversible demagnetization factor which are both improved. SOLUTION: A composite bonded magnet has a main component composition represented by formula (values are in atom.%), RαT100-(α+β+γ+δ)MβBγNδ (R denotes, at least, one of rare earth elements containing Y and La, including Sm without fail; T is Fe or Fe and Co; M is at least one among Al, Ti, V, Cr, Mn, Cu, Ga, Zr, Nb, Mo, Hf, Ta or W; 5<=α<=18, 0<=β<=10, 0<=γ<=4, 4<=δ<=30) and is composed of R-T-N coarse powder of 10 to 300 μm average grain diameter, R-T-N fine powder of 1 to 10 μm average grain diameter, and a binder. |
