Refractory crucibles and molds for containing reactive molten metals and salts
OwnerGarth W. Billingsinventor
Life of this patent
Estimating the term…
Abstract
Refractory ceramics and composite materials consisting of nitrides, mixed nitrides and oxides, and oxynitrides of Group IV metals Hf, Zr, Ti, and Group III metals Sc, Y, and lanthanides La through Lu, are used to form refractory articles, or as coatings for refractory articles. These materials and articles have high resistance to molten metals, molten salts, erosion, and high temperature corrosive environments, and can be engineered to have desirable thermal and electrical properties. In particular the articles are crucibles, molds, containment vessels, and spray nozzles, and most particularly these articles are made of or coated with the Hf compounds.
Claims15
An article of manufacture comprising an article selected from a refractory crucible, mold, containment vessel, or molten metal spray nozzle, wherein the article further comprises a shaped body having at least a molten metal or molten salt contacting layer formed of a refractory material selected from a nitride, mixed nitride and oxide, or oxynitride of a group IV metal selected from Hf, Zr, and Ta;
- a nitride, c;
- and combinations or reaction products thereof.
An article of manufacture comprising an article selected from a refractory crucible, mold, containment vessel, or molten metal spray nozzle, wherein the article further comprises a shaped body having at least a molten metal or molten salt contacting layer formed of a hafnium nitride.
Dependencies are inferred from the claim text.