CA2036043A1 - Molded ceramic articles and production method thereof - Google Patents

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 Cr < 2 wt.% and 0.1 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 Co < 5 wt.%, 0 Al < 10 wt.%, 0 Ti < 20 wt.%, 0 Mo < 3 wt.%, 0 Si < 3 wt.%, 0 V < 3 wt.%, 0 Mg < 1 wt.% and 0 C
< 5 wt.%, and has at least one composition range selected from the group consisting of the following composition ratios: 0 < O2 < 10 wt.%, 0 < N2 < 5 wt.% and 0 < B < 10 wt.%.