Accession Number : AD0164959

Title :   Lamellar Crucible for Induction Melting Titanium.

Descriptive Note : Patent,


Personal Author(s) : Zanis,Charles A. ; Helferich,Richard L.

Report Date : 22 MAY 1973

Pagination or Media Count : 4

Abstract : The patent describes a lamellar crucible for induction melting titanium which has an outer graphite shell closed at one end to form inner and outer surfaces. A first layer generally of the class of refractory metals or of beryllium oxide covers the inner surface of the shell to limit carbon contamination. A second layer is preferably oxygen deficient yttrium oxide and may also be generally of the class of rare earth metal oxides in an oxygen deficient condition. Also, the second layer may be yttrium oxide or the rare earth metal oxides. The second layer covers the first layer to limit reactivity with the molten titanium.

Descriptors :   *Crucibles, *Patents, Induction heating, Titanium, Barrier coatings, Metal coatings, Protective coatings, Graphite, Refractory metals, Beryllium oxides, Yttrium oxides, Rare earth compounds, Oxides

Subject Categories : Metallurgy and Metallography
      Containers and Packaging

Distribution Statement : APPROVED FOR PUBLIC RELEASE