Articles and method of strengthening aluminum oxynitride

Details Articles and method of strengthening aluminum oxynitride Articles and method of strengthening aluminum oxynitride

1990-10-31

1992-08-04

Buffalow, Edith L.

Stock material or miscellaneous articles

Composite

Of quartz or glass

428698, B32B 1504

Patent

active

051358140

ABSTRACT:
Surface compression layers are provided over aluminum oxynitride by coating a base of said material with a glass frit having a thermal expansion coefficient lower than that of the material, and firing the frit to glass the glass frit after firing the base and coating are allowed to cool thus placing the coating in compression.

REFERENCES:
patent: 4756976 (1988-07-01), Komeya et al.
patent: 4882212 (1989-11-01), Singhdeo et al.
patent: 4930731 (1990-06-01), Roy et al.
patent: 4957886 (1990-09-01), Mathers et al.
R. L. Gentilman, et al., "Strength and Thermal Shock Resistance of Sapphire and Strengthened Sapphire," 33rd Pacific Coast Regional Meeting, The American Ceramic Society, Oct. 27, 1980, 10 pages.

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