Protective silicon nitride or silicon oxynitride coating for por

Details Protective silicon nitride or silicon oxynitride coating for por Protective silicon nitride or silicon oxynitride coating for por

1978-09-27

1980-02-05

McCamish, Marion E.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

428306, 428331, 428404, 428446, 428538, B32B 904

Patent

active

041873440

ABSTRACT:
Porous refractory articles resistant to degradation at high temperatures for example by oxygen, chlorine and the like, are composed of a main body of a porous sintered carbide, nitride, boride or silicide which is coated with silicon nitride or silicon oxynitride. The coating is not only on the surface of the main body of the porous refractory article, but also penetrates the article to a depth at least greater than the depth of the surface pores.

REFERENCES:
patent: 1114665 (1914-10-01), Allen
patent: 1918317 (1933-07-01), Benner
patent: 2992127 (1961-07-01), Jones
patent: 2993814 (1961-07-01), Epprecht
patent: 3248346 (1966-04-01), Amberg
patent: 3531678 (1970-09-01), Schiavone
patent: 3538231 (1970-11-01), Newkirk
patent: 3895219 (1975-07-01), Richerson
patent: 3911188 (1975-10-01), Torti

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