C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
25/141
C04B 37/00 (2006.01) C04B 35/65 (2006.01)
Patent
CA 1309232
TITLE SURFACE BONDING OF CERAMIC BODIES APPLICANT LANXIDE TECHNOLOGY COMPANY, LP INVENTOR Stanley J. LUSZCZ, Marc S. NEWKIRK Andrew W. URQUHART ABSTRACT Ceramic bodies are bonded together via a layer of an oxidation reaction product of a molten metal, which metal is present in one or both of the ceramic bodies prior to bonding. At least one of the ceramic bodies comprises a ceramic product formed by the oxidation reaction of molten parent metal (e.g., alumina from molten aluminum) and grown as molten metal is transported through, and oxidized on the surface of, its own oxidation product. One or both of the ceramic bodies used in the bonding process contains surface-accessible channels of residual metal, i.e., metal channels which have resulted from molten-metal transport during the ceramic growth process. When the suitably assembled ceramic bodies are heated in an oxidizing atmosphere at a temperature above the melting point of the residual metal, molten metal at the surface of the ceramic body reacts with the atmospheric oxidant so as to bond the facing surfaces together by a layer of the oxidation reaction product of the molten metal formed therebetween.
547460
Luszcz Stanley J.
Newkirk Marc S.
Urquhart Andrew W.
Lanxide Technology Company Lp
Mitches & Co.
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