Compositions: ceramic – Ceramic compositions – Refractory
Patent
1985-12-10
1987-03-03
McCarthy, Helen M.
Compositions: ceramic
Ceramic compositions
Refractory
501110, 501117, C04B 3504
Patent
active
046475478
ABSTRACT:
A high chromia refractory composite has been developed with improved thermal shock resistance and containing about 5-30 wt. % of unstabilized ZrO.sub.2 having a temperature-dependent phase change resulting in large expansion mismatch between the ZrO.sub.2 and the chromia matrix which causes microcracks to form during cooling in the high chromia matrix. The particle size preferably is primarily between about 0.6-5 microns and particularly below about 3 microns with an average size in the order of 1.2-1.8 microns.
REFERENCES:
patent: 2231944 (1941-02-01), Pole
patent: 3192058 (1965-06-01), Davies et al.
patent: 3281137 (1966-10-01), Alper et al.
patent: 3293053 (1966-12-01), Alper et al.
patent: 3309209 (1967-03-01), Martinet et al.
patent: 3475352 (1969-10-01), Barbier et al.
patent: 3657063 (1972-04-01), Brown et al.
patent: 3837870 (1974-09-01), Recasens et al.
patent: 4141743 (1979-02-01), Grubbs
patent: 4298385 (1981-11-01), Chaussen et al.
patent: 4322249 (1982-03-01), Claussen et al.
patent: 4374897 (1983-02-01), Yamaguchi
patent: 4492766 (1985-01-01), Zverina
patent: 4533647 (1985-08-01), Tien
Singh, J. P. et al, "Fracture Toughness of MgCr.sub.2 O.sub.4 -ZrO.sub.2 Composite", presented at American Ceramics Society 9th Annual Conference on Composites and Advanced Ceramics Materials, Cocoa Beach, Fla. on Jan. 20-24, 1985; Report No. ANL/FE-85-01 dated Aug. 1985.
Davidge, R. W. et al. "The Strength of Two-Phase Ceramic/Glass Materials", Journal of Materials Science, vol. 3, pp. 629-634, (1968).
James Jawana J.
Picciolo John J.
Singh Jitendra P.
Hightower Judson R.
Lohff William
McCarthy Helen M.
The United States of America as represented by the United States
Weinberger James W.
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