Impregnated alumina-based core and method
The present invention relates to a fired, porous alumina-based ceramic core impregnated with yttria to improve core creep resistance at elevated casting temperature used for casting metallic materials, especially reactive superalloys, and a method of improving core creep resistance by such impregnat...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | The present invention relates to a fired, porous alumina-based ceramic core impregnated with yttria to improve core creep resistance at elevated casting temperature used for casting metallic materials, especially reactive superalloys, and a method of improving core creep resistance by such impregnation.
An impregnated fired porous alumina-based ceramic core for use in an investment shell mold in the casting of molten metals and alloys wherein the core is impregnated with yttria to improve core creep resistance at elevated casting temperatures and times. |
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