Oxidation resistant and low coefficient of thermal expansion NiA1-CoCrAly alloy
The present invention relates to NiAl-based intermetallic composites, and more particularly, to a new NiAl-CoCrAlY bond coat optionally having particulate AlN dispersed therein. The bond coat has particular application as part of a thermal barrier coating for metallic components used in high tempera...
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| Main Author | |
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| Format | Patent |
| Language | English |
| Published |
24.09.2002
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| Online Access | Get full text |
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| Summary: | The present invention relates to NiAl-based intermetallic composites, and more particularly, to a new NiAl-CoCrAlY bond coat optionally having particulate AlN dispersed therein. The bond coat has particular application as part of a thermal barrier coating for metallic components used in high temperature applications.
A bond coat composition for use in thermal barrier coatings comprises a NiAl-CoCrAlY matrix containing particles of AlN dispersed therein. The bond coat composition is prepared by croymilling NiAl and CoCrAlY in liquid nitrogen. |
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