| 摘要 |
<p>A method of manufacturing an R-T-B rare earth sintered magnet includes a process of disposing and sintering a compact of a first alloy powder and an alloy material of a second alloy in a chamber of a sintering furnace. The first alloy consists of R which represents a rare earth element, T which represents a transition metal essentially containing Fe, a metal element M which represents Al and/or Ga, B, Cu, and inevitable impurities. The first alloy contains 11 at% to 17 at% of R, 4.5 at% to 6 at% of B, 0 at% to 1.6 at% of M, and T as the balance, and Dy content in all of the rare earth elements is 0 at% to 29 at%. The second alloy consists of R which represents a rare earth element, T which represents a transition metal essentially containing Fe, a metal element M which represents Al and/or Ga, B, Cu, and inevitable impurities. The second alloy contains 11 at% to 20 at% of R, 4.5 at% to 6 at% of B, and 0 at% to 1.6 at% of M, and T as the balance, and Dy content in all of the rare earth elements is 0 at% to 29 at%.</p> |
