Title:
CERAMIC COMPOSITE COATING MATERIAL
Document Type and Number:
WIPO Patent Application WO/1994/008069
Kind Code:
A1
Abstract:
A ceramic coating for a metal article includes a metallic bond coat deposited on the metal article, at least one MCrAlY/ceramic layer deposited on the bond coat, and a ceramic composite top layer deposited on the MCrAlY/ceramic layer. The M in MCrAlY stands for Fe, Ni, Co, or a mixture of Ni and Co. The ceramic in the MCrAlY/ceramic layer comprises mullite, alumina, zircon, silimanite, sodium zirconium phosphate, fused silica, cordierite, aluminum titanate, or zirconia. The ceramic composite top layer comprises a ceramic matrix and at least one secondary phase. A method of making the coating includes sequentially depositing a metallic bond coat on the metal article, at least one MCrAlY/ceramic layer on the bond coat, and a ceramic composite top layer on the MCrAlY/ceramic layer.
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Inventors:
SCHARMAN ALAN J
MATARESE ALFRED P
EATON HARRY E JR
MATARESE ALFRED P
EATON HARRY E JR
Application Number:
PCT/US1993/009038
Publication Date:
April 14, 1994
Filing Date:
September 23, 1993
Export Citation:
Assignee:
UNITED TECHNOLOGIES CORP (US)
International Classes:
F02F1/00; C23C4/02; C23C28/00; C23C28/04; F02F3/10; F02F3/12; (IPC1-7): C23C28/00
Foreign References:
| EP0340791A2 | 1989-11-08 | |||
| US4916022A | 1990-04-10 | |||
| US4880614A | 1989-11-14 | |||
| US4335190A | 1982-06-15 | |||
| US4055705A | 1977-10-25 |
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