Molded ceramic articles and production method thereof

US5374391A · kind A · utility

Assignee

• HONDA MOTOR CO., LTD. · JP

Inventors

• Mitsuo Kuwabara · Tsurugashima, JP
• Kiyoshi Ikegami · Nagareyama, JP
• Teruaki Yoshida · Ichihara, JP
• Koji Takahashi · Tokyo, JP
• Tamotsu Harada · Kitakyushu, JP
• Takeshi Komiyama · Tokyo, JP
• Fumio Hirai · Sayama, JP
• Masamichi Hayashi · Sayama, JP

Key dates

• Filing date: Jun 9, 1993
• Grant date: Dec 20, 1994
• Expiry date: Jun 9, 2013

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B23K35/0205
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

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: O<Fe< 5 wt. %, O.ltoreq.Co< 5 wt. %, O.ltoreq.Al< 10 wt. %, O.ltoreq.Ti< 20 wt. %, O.ltoreq.Mo< 3 wt. %, O.ltoreq.Si< 3 wt. %, O.ltoreq.V< 3 wt. %, O.ltoreq.Mg< 1 wt. % and O.ltoreq.C < 5 wt % and has at least one composition range selected from the group consisting of the following composition ratios: O<O.sub.2 <10 wt. %, O<N.sub.2 <5 wt. % and O<B< 10 wt. %.