Low temperature sintering of yttria stabilized zirconia with lan

Details Low temperature sintering of yttria stabilized zirconia with lan Low temperature sintering of yttria stabilized zirconia with lan

1987-05-11

1988-08-16

Dixon, Jr., William R.

Compositions: ceramic

Ceramic compositions

Refractory

501152, C04B 3548

Patent

active

047644915

ABSTRACT:
Yttria stabilized zirconia materials are sintered using low temperature liquid phase sintering techniques. A fugitive sintering aid, lanthana borate, is combined with the yttria stabilized zirconia in sufficient amounts to effect the liquid phase sintering. The material is sintered by heating to about 1390.degree. C. for a duration of about two hours. The resulting sintered yttria stabilized zirconia is characterized by a fine microstructure and improved low temperature stability.

REFERENCES:
patent: 3862283 (1975-01-01), Rhodes
patent: 4115134 (1978-09-01), Rhodes
patent: 4336339 (1982-06-01), Okumiya et al.
Lange, Transformation Toughening, Journal of Materials Science, vol. 17, pp. 240-246, 1982.

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