Zirconia ceramics and a method of producing the same

Details Zirconia ceramics and a method of producing the same Zirconia ceramics and a method of producing the same

1981-03-19

1982-11-23

Bell, Mark

Compositions: ceramic

Ceramic compositions

Refractory

64 56, 423266, 423608, 501152, C04B 3548

Patent

active

043605982

ABSTRACT:
Zirconia ceramics consisting mainly of ZrO.sub.2 and Y.sub.2 O.sub.3 in a molar ratio of Y.sub.2 O.sub.3 /ZrO.sub.2 of 2/98.about.7/93 and consisting of crystal grains having a mixed phase consisting essentially of tetragonal phase and cubic phase or having a phase consisting essentially of tetragonal phase, the average size of the crystal grains being not larger than 2 .mu.m, has a high strength and shows little deterioration of strength due to the lapse of time, and is suitable as a solid electrolyte for oxygen concentration cells, machine parts for internal combustion engines, thermistors, cutting tools and other industrial materials.

REFERENCES:
patent: 3303033 (1967-02-01), La Grange et al.
patent: 3334962 (1967-08-01), Clearfield
patent: 3432314 (1969-03-01), Mazdiyasni et al
patent: 3514252 (1970-05-01), Levy
patent: 4219359 (1980-08-01), Miwa et al.
patent: 4266979 (1981-05-01), Miyoshi et al.

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