Ceramic bodies formed from partially stabilized zirconia

Details Ceramic bodies formed from partially stabilized zirconia Ceramic bodies formed from partially stabilized zirconia

1990-01-22

1991-06-11

Dixon, Jr., William R.

Compositions: ceramic

Ceramic compositions

Refractory

501 80, 501102, C04B 3548, C04B 3800

Patent

active

050232177

ABSTRACT:
The present invention relates to ceramic bodies suitable for use in high temperature applications such as molten metal filters and kiln furniture. The ceramic bodies are formed from partially stabilized zirconia and are characterized by the presence of from about 12% to about 80% by weight zirconia in a monoclinic phase and the balance essentially in a cubic phase at room temperature. The ceramic bodies possess an excellent combination of physical properties including high temperature strength and thermal shock resistance. The invention also relates to the process for forming the ceramic bodies and the thixotropic ceramic slurry used therein.

REFERENCES:
patent: 4035191 (1977-07-01), Johns
patent: 4568595 (1986-02-01), Morris
patent: 4690910 (1987-09-01), Tsukuma et al.
patent: 4703024 (1987-10-01), Aronov
patent: 4789651 (1988-12-01), Sugie et al.
patent: 4885266 (1989-12-01), Hughan et al.
Dialog Abstract-"Ceramics Filter for Filtering Molten Metal", JP 62269724(A) (11/24/87).
Modern Ceramic Engineering, Properties Processing & Use in Design, David Richerson (1982), pp. 18-19.

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