Patent · US Expired

Sintered molding, a method for producing it and its use

US4975397A · kind A · utility

11Cited by

9References

28Claims

0Family size

Assignee

Feldmuhle Aktiengesellschaft · DE

Inventors

Ulf Dworak · Baltmannsweiler, DE
Hans Olapinski · Esslingen am Neckar, DE
Wolfgang Burger · Burgrain, DE

Key dates

Filing date	Feb 26, 1987
Grant date	Dec 4, 1990
Priority date	—
Expiry date	Feb 26, 2007

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF05C2203/0895
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

The present invention is in a sintered molding of partially stabilized zirconium oxide having a microstructure of 40 to 70 volume percent cubic phase, 30 to 70 volume percent tetragonal phase, and up to 10 volume percent monoclinic phase wherein the tetragonal phase is present in the form of precipitates less than 200 nm. A mixture of magnesia and yttria is used to stabilize the zirconia. Optionally, the sintered molding may further contain up to 20 wt. % spinel.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.