| 申请日期 | 2025-07-21 | 申请号 | JP2002091729 |
| 公开（公告）号 | JP4132918B2 | 公开（公告）日 | 2008-08-13 |
| 公开国别 | JP | 申请人省市代码 | 全国 |
| 申请人 | NIPPON DENKO | ||
| 简介 | PROBLEM TO BE SOLVED : To suggest a process for producing ferroboron possessing a sufficient quality as a raw material for rare-earth permanent magnets in a high yield, by reducing its carbon content compared to that of conventional ferroboron. SOLUTION : A molten metal of high-carbon ferroboron is placed in a refractory vessel and kept under reduced pressure in a hydrogen gas-containing atmosphere at 1, 550-1, 750°C to remove carbon. COPYRIGHT : (C)2004, JPO | ||
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