| 申请日期 | 2025-07-11 | 申请号 | JP2008323013 |
| 公开（公告）号 | JP2009302504A | 公开（公告）日 | 2009-12-24 |
| 公开国别 | JP | 申请人省市代码 | 全国 |
| 申请人 | DAIDO STEEL CO LTD | ||
| 简介 | PROBLEM TO BE SOLVED : To improve corrosion resistance and to reduce the generation of ammonia odor without requiring much trouble nor cost. SOLUTION : A heat treatment of rare earth magnetic powder is carried out in a range of temperatures of 150 to 300°C for ≥[0.5×(20/X)] hours in an atmosphere containing X% oxygen to form an oxide film on a surface of the magnetic powder. COPYRIGHT : (C)2010, JPO&INPIT | ||
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