| 摘要 |
PURPOSE:To obtain a permanent magnet having superior magnetic characteristics by using a rare earth metal and an Fe-Co-B-P intermetallic compound as starting materials. CONSTITUTION:An intermetallic compound having a composition represented by a formula R(Fe1-X-Y-ZCoXBYPZ)A is refined. In the formula, R is one or more kinds of rare earth elements, 0<=X<=0.5, 0.02<=Y<=0.3, 0.0001<=Z<=0.03, and 4<= A<= 7.5. An ingot of the intermetallic compound is cooled and crushed, and the resulting powder is molded in a magnetic field and sintered at 1,100 deg.C for 2hr in an atmosphere of gaseous Ar. The sintered body is aged at 500 deg.C for 1hr and at 600 deg.C for 1hr to manufacture a permanent magnet having superior magnetic characteristics. |
