发明名称 |
METHOD FOR PRODUCING OXIDATION-RESISTANT HIGH Cr FERRITIC HEAT RESISTANT STEEL |
摘要 |
A high Cr ferritic heat-resistant steel (Cr content of 15 mass % or less), which, at least a region 10 mu m in depth as measured from the surface has a worked texture comprising elongated ferritic grains or a fine crystal grain texture comprising ferritic grains of 3 mu m or less in diameter, and has a protective coating film on the surface; it is a high Cr ferritic heat-resistant steel improved in oxidation resistance without causing drop in high temperature strength or in toughness. <IMAGE>
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申请公布号 |
EP1557477(A1) |
申请公布日期 |
2005.07.27 |
申请号 |
EP20030770135 |
申请日期 |
2003.11.04 |
申请人 |
NATIONAL INSTITUTE FOR MATERIALS SCIENCE |
发明人 |
ITAGAKI, TAKEHIKO;TORIZUKA, SHIRO,;KUTSUMI, HIROYUKI, |
分类号 |
C21D8/00;C22C38/00;C21D6/00;C21D7/00;C21D7/13;C22C38/18;C22C38/22;(IPC1-7):C22C38/00 |
主分类号 |
C21D8/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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