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