High-toughness ZrO.sub.2 sintered body and method of producing s

Details High-toughness ZrO.sub.2 sintered body and method of producing s High-toughness ZrO.sub.2 sintered body and method of producing s

1988-06-06

1993-01-19

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Carbide or oxycarbide containing

501 88, 501 95, 501 96, 501103, 501105, C04B 3556, C04B 3550, C04B 3548, C04B 3510

Patent

active

051806967

ABSTRACT:
A high-toughness ZrO.sub.2 sintered body having a stress-induced transformation ratio of 25% or more, which consists essentially of 40-90 volume % of ZrO.sub.2 containing 0.1-3 mol % of Nd.sub.2 O.sub.3 and 0.5-3.5 mol % of Y.sub.2 O.sub.3 as stabilizers of the crystal structure of ZrO.sub.2, and 10-60 volume % of at least one of Al.sub.2 O.sub.3, SiC, TiC, B.sub.4 C and TiB.sub.2.

REFERENCES:
patent: 3957500 (1976-05-01), Pitts
patent: 4221650 (1980-09-01), Friese et al.
patent: 4360598 (1982-11-01), Otagiri et al.
patent: 4370393 (1983-01-01), Watanabe et al.
patent: 4525464 (1985-06-01), Claussen et al.
patent: 4585499 (1986-04-01), Mase et al.
patent: 4753902 (1988-06-01), Ketchan
"Zirconia Ceramics I", edited by Shigeyuki Munemiya, 1983, p. 120 (FIG. 3).
Tech. Report No. 3 (1978), F. F. Lange.
Tech. Report No. 7 (1979), F. F. Lange.
Tech. Report of Tohoku University Metal Materials Laboratory, No. 12, pp. 19-21, Mar. 1987.

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