发明名称 |
POWDER CORE AND IRON-BASE POWDER FOR POWDER CORE |
摘要 |
The present invention relates to an iron-base powder for a powder core, wherein when cross-sections of at least 50 iron-base powders are observed and a crystal grain size distribution containing at least a maximum crystal grain size is determined by measuring a crystal grain size of each iron-base powder, 70% or more of the measured crystal grains are a crystal grain having a crystal grain size of 50 mum or more. According to the iron-base powder of the invention, a coercivity of the powder core can be made small and a hysteresis loss can be reduced.
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申请公布号 |
US2009226751(A1) |
申请公布日期 |
2009.09.10 |
申请号 |
US20070440779 |
申请日期 |
2007.09.11 |
申请人 |
KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL LTD.);HITACHI POWDERED METALS CO., LTD. |
发明人 |
MITANI HIROYUKI;AKAGI NOBUAKI;HOUJOU HIROFUMI;ISHIHARA CHIO;IWAKIRI MAKOTO;YAMADA SOHEI;MOCHIMIZO YASUKUNI |
分类号 |
B32B15/01;B32B15/02;C22C38/00 |
主分类号 |
B32B15/01 |
代理机构 |
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