Stabilized zirconia

Details Stabilized zirconia Stabilized zirconia

1988-08-10

1990-01-02

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Refractory

501152, C04B 3548

Patent

active

048913430

ABSTRACT:
Ceramic tetragonal zirconia is stabilized against transformation to the undersirable monoclinic form by incorporation of a mixture of stabilizers comprising controlled amounts of dysprosia and ceria, together with either yttria or titania (or both). The mixture can be prepared by wet-mixing zirconia with nitrates of the stabilizer materials, followed by drying, then calcining, e.g., at 650.degree. C. to drive off decomposition products, and then sintering at, e.g., 1465.degree.-1475.degree. C.

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patent: 4507394 (1985-03-01), Mase et al.
patent: 4520114 (1985-05-01), David
patent: 4587225 (1986-05-01), Tsakuma et al
patent: 4610967 (1986-09-01), Imanishi et al.
patent: 4659680 (1987-04-01), Gile
patent: 4690910 (1987-09-01), Tsukuma et al.
patent: 4690911 (1987-09-01), Nakada

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