Molded ceramic articles

Details Molded ceramic articles Molded ceramic articles

1992-10-22

1995-08-22

Walsh, Donald P.

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

75228, 75232, 75233, 75234, 75235, 75237, 75247, 75950, 420469, 420488, 428357, 428546, 428615, B22F 700

Patent

active

054436150

ABSTRACT:
A method of producing a molded ceramic article comprises the first step mixing powdery raw materials and a liquid additive, thereby obtaining a mixed raw material, the second step press-molding the mixed raw material obtained in the first step in a hydrostatically applied condition of pressure, thereby removing an excess of the liquid additive to obtain a preform, and the third step calcining the preform obtained in the second step to obtain a molded ceramic article. The molded ceramic article comprises, as a principal component, copper and, as essential components, Cr and Ni within composition ranges of 0.1.ltoreq.Cr<2 wt. % and 0.1.ltoreq.Ni<10 wt. % and further at least one additive component selected from the group consisting of the following composition ratios: the following composition ratios: 0<Fe<5 wt. %, 0.ltoreq.Co<5 wt. %, 0.ltoreq.Al<10 wt. % 0.ltoreq.Ti<20 wt. %, 0.ltoreq.Mo<3 wt. %, 0.ltoreq.Si<3 wt. % 0.ltoreq.V<3 wt. % 0.ltoreq.Mg<1 wt. % and 0.ltoreq.C<5 wt. % and has at least one composition range selected from the group consisting of the following composition ratios: 0<O.sub.2 <10 wt. %, 0<N.sub.2 <5 wt. % and 0<B<10 wt. %.

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