SILICON CARBIDE-CONTAINING MOLD AND FACECOAT COMPOSITIONS AND METHODS FOR CASTING TITANIUM AND TITANIUM ALUMINIDE ALLOYS

摘要

The disclosure relates generally to mold compositions and methods of molding and the articles so molded. More specifically, the disclosure relates to silicon carbide-containing mold compositions, silicon carbide-containing intrinsic facecoat compositions, and methods for casting titanium-containing articles, and the titanium-containing articles so molded.

主权项

1. A method for forming a mold for casting a titanium-containing article, comprising:
mixing calcium aluminate and silicon carbide with a liquid to produce a slurry, wherein the percentage of solids in the slurry is about 60% to about 80% by weight of the slurry and a viscosity of the slurry is about 30 to about 1500 centipoise; introducing the slurry into a mold cavity that contains a fugitive pattern; and allowing the slurry to cure in the mold cavity to form the mold for casting the titanium-containing article.