Patent ID: 9186719
Filing Date: 2015-11-17
Classification: B22C,C04B,G01N

Abstract:
1. A method for detecting sub-surface ceramic inclusions in a titanium or titanium alloy casting, said method comprising: combining calcium aluminate, aluminosilicates, calcium aluminosilicates, and at least one element more radiographically dense than the calcium aluminate, and a liquid to form a slurry, wherein the aluminosilicates and calcium aluminosilicates are less than about 5% by weight; forming a mold from the slurry; introducing a titanium aluminide-containing metal to the mold; solidifying said titanium aluminide-containing metal to form an article in the mold; removing the solidified titanium aluminide-containing metal article from said mold; subjecting the solidified titanium aluminide-containing article to radiographic inspection to provide a radiograph; and examining said radiograph for the presence of the radiographically dense element on or in the article.