Title:
HIGH STRENGTH ZIRCONIA CERAMICS HAVING HIGH ACID RESISTANCE
Document Type and Number:
Japanese Patent JPH046152
Kind Code:
A
Abstract:
PURPOSE: To obtain the title ceramics having superior bending strength and acid resistance by mixing a ZrO2 sintered body contg. Y2O3 as a stabilizing agent with a specified amt. of Al- and Mg-contg. components and firing the mixture at a prescribed temp.
CONSTITUTION: Al- and Mg-contg. components are added to a ZrO2 sintered body contg. 1.5-5 mol% Y2O3 as a stabilizing agent by 1-30 wt.% (expressed in terms of Al2O3 and MgO), in total, basing on the amt. of the sintered body in (35-45):(65-55), (60-75):(40-25) or (85-99):(15-1) molar ratio of Al2O3: MgO. They are mixed and fired at 1,200-1,350°C.
Inventors:
NOGUCHI YASUSHI
Application Number:
JP10774290A
Publication Date:
January 10, 1992
Filing Date:
April 23, 1990
Export Citation:
Assignee:
NGK INSULATORS LTD
International Classes:
C04B35/48; (IPC1-7): C04B35/48
Domestic Patent References:
| JPH0222170A | 1990-01-25 | |||
| JPS643071A | 1989-01-06 |
Attorney, Agent or Firm:
Shoichi Hase (1 person outside)