Sintered molding

US5830816A · kind A · utility

Assignee

• Cerasiv GmbH Innovatives Keramik-Engineering · DE

Inventors

• Wolfgang Burger · Burgrain, DE
• Stefan Gernsheimer
• Hans Andersch · Bad Boll, DE
• Kilian Friederich · Plochingen, DE
• Siegbert Lehmann · Plochingen, DE
• Johannes Schneider · Biberach an der Riß, DE
• Michael Fripan · Backnang, DE

Key dates

• Filing date: Jul 2, 1996
• Grant date: Nov 3, 1998
• Expiry date: Jul 2, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2235/96
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Zirconium dioxide containing 2 to 40 vol. % of stabilizing oxides is embedded in the matrix material of a sintered molding consisting of an aluminum oxide/chromium oxide mixed crystal. The quantity of stabilizing oxides added is chosen so that the zirconium dioxide is predominantly tetragonal. The molar ratio of the zirconium dioxide containing the stabilizing oxides to the chromium oxide is between 1000:1 and 20:1 and the zirconium dioxide has a maximum particle size of 2 .mu.m.