发明名称 |
OVERLAY COATINGS WITH HIGH YTTRIUM CONTENTS |
摘要 |
Improved coating compositions are described for the protection of superalloys at elevated temperatures, particularly where Hf is absent from the substrate alloy. The coatings of the NiCrAlY or NiCoCrAlY type are significantly improved by the use of higher levels of yttrium. The preferred compositions are within the following range Element wt% Cr 10-35 Al 8-20 Y 11-30 Co 0-30 Ni Balance e |
申请公布号 |
GB2103656(B) |
申请公布日期 |
1985.06.26 |
申请号 |
GB19820022226 |
申请日期 |
1982.08.02 |
申请人 |
* UNITED TECHNOLOGIES CORPORATION |
发明人 |
DAVID SCOTT * DUVALL;DINESH KUMAR * GUPTA |
分类号 |
C22C19/05;C23C4/08;C23C14/14;C23C14/16;C23C30/00;C30B33/00 |
主分类号 |
C22C19/05 |
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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