CASTING MOLD WITH GRADING OF SILICON CARBIDE

摘要

The disclosure relates generally to mold 10 compositions and methods of molding and the articles so molded. More specifically, the disclosure relates to a mold 10 for casting a titanium-containing article, comprising calcium aluminate and silicon carbide, wherein said silicon carbide is graded in said mold 10 such that it is in different portions of the mold 10 in different amounts, with the highest concentration of silicon carbide being located between a bulk of the mold 15 and a surface of the mold that opens to a mold cavity.