发明名称 POWDER OF SOFT MAGNETIC METAL, GREEN COMPACT THEREOF, AND METHOD FOR MANUFACTURING POWDER OF SOFT MAGNETIC METAL
摘要 PROBLEM TO BE SOLVED: To provide a powder of soft magnetic metal, which can be heat-treated at high temperature, shows low hysteresis loss and high electrical resistance, and to provide a method for manufacturing the same. SOLUTION: The powder 1 of the soft magnetic metal has a composition expressed by the formula of Fe<SB>100-a-b</SB>Si<SB>a</SB>Cr<SB>b</SB>(0≤a≤8 and 0<b≤3, by wt.%), and has a higher Cr concentration 3 on the surface of the powder than that in the center part of the powder. It is preferable that all or one part of the surface of the powder of the soft magnetic metal is coated with an insulative oxide 2, and that an oxygen content in the whole powder of the soft magnetic metal including the insulative oxide is 10 mass% or less. COPYRIGHT: (C)2008,JPO&INPIT
申请公布号 JP2008195986(A) 申请公布日期 2008.08.28
申请号 JP20070030303 申请日期 2007.02.09
申请人 HITACHI METALS LTD 发明人 KONO NAOMI;TANIGAWA SHIGEO
分类号 B22F1/00;B22F1/02;B22F3/00;C22C38/00;H01F1/22;H01F1/24;H01F1/33 主分类号 B22F1/00
代理机构 代理人
主权项
地址