发明授权
US5776263A Method for producing alloy powder of the R2T17 system, a method for
producing magnetic powder of the of the R2T17NX system, and a high
pressure heat-treatment apparatus
失效
R2T17系统的合金粉末的制造方法，R2T17NX系统的磁粉制造方法以及高压热处理装置
- 专利标题： Method for producing alloy powder of the R2T17 system, a method for producing magnetic powder of the of the R2T17NX system, and a high pressure heat-treatment apparatus
- 专利标题（中）： R2T17系统的合金粉末的制造方法，R2T17NX系统的磁粉制造方法以及高压热处理装置
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申请号： US751809申请日： 1996-11-19
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公开(公告)号： US5776263A公开(公告)日： 1998-07-07
- 发明人: Kiyoshi Kojima , Takeshi Takahashi
- 申请人： Kiyoshi Kojima , Takeshi Takahashi
- 申请人地址： JPX Osaka
- 专利权人： Matsushita Electric Industrial Co., Ltd.
- 当前专利权人： Matsushita Electric Industrial Co., Ltd.
- 当前专利权人地址： JPX Osaka
- 优先权： JPX5-322356 19931221; JPX5-324321 19931222; JPX6-088592 19940426
- 主分类号： B22F9/02
- IPC分类号： B22F9/02 ; C22C1/04 ; H01F1/055 ; H01F1/059 ; H01F1/053
摘要：
Homogenizing heat-treatment is conducted for changing an ingot containing R (R: Sm or a substance obtained by replacing a part of Sm with one or more kinds of rare earth elements) and T (T: Fe or a substance obtained by replacing a part of Fe with one or more kinds of transition elements) as main component into an alloy ingot mainly containing a R.sub.2 T.sub.17 phase. Next, the above-described alloy ingot is allowed to absorb hydrogen in hydrogen gas in the temperature range of 70.degree. C. to 300.degree. C. and at pressures of 5kgf/cm.sup.2 or more, thus conducting coarse crushing treatment.
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