发明名称 |
IMPROVED DURABILITY METALLIC-CERAMIC TURBINE AIR SEALS |
摘要 |
<p>An improved durability turbine air seal comprises a metallic substrate, a metallic bond coat on the substrate, a continuously graded metal-ceramic layer on the bond coat and an outer layer of pure ceramic. The continuously graded metal-ceramic layer consists of a ceramic material having a reduced oxygen permeability compared to the zirconia material used in the prior art and a metallic material having a high resistance to oxidation. The seal is fabricated by plasma spraying with controlled subtrate temperatures to induce in the sample a controlled strain distribution so as to make the seal resistant to failure in service. Other concepts for reducing the liability of the seal to failure by oxidation are described.</p> |
申请公布号 |
EP0185603(B1) |
申请公布日期 |
1989.11.08 |
申请号 |
EP19850630204 |
申请日期 |
1985.11.27 |
申请人 |
UNITED TECHNOLOGIES CORPORATION |
发明人 |
EATON, HARRY EDWIN;NOVAK, RICHARD CHARLES |
分类号 |
C23C4/06;C23C4/02;C23C4/10;F01D11/08;F01D11/12;F02C7/28 |
主分类号 |
C23C4/06 |
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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