Method of co-deposit coating aluminum oxide and titanium oxide

Details Method of co-deposit coating aluminum oxide and titanium oxide Method of co-deposit coating aluminum oxide and titanium oxide

1977-05-26

1978-09-05

Gwinnell, Harry J.

Coating processes

Coating by vapor, gas, or smoke

427255, C23C 1108

Patent

active

041121481

ABSTRACT:
Disclosed is a method of forming dense protective coatings of co-deposited aluminum oxide and titanium oxide on wear surfaces. The coating is formed by simultaneously reacting an aluminum halide gas and a titanium halide gas with water vapor on a surface maintained at a temperature of about 900.degree. to about 1250.degree. C. Reaction conditions are maintained to assure mixing of the titanium halide gas with the other reactants only in the reaction zone and compositions of the reactant gases are limited to produce a coating comprising alpha alumina (Al.sub.2 O.sub.3) with about 2% to about 10% hexagonal alpha titanium oxide (Ti.sub.2 O.sub.3) dispersed in the alumina matrix.

REFERENCES:
patent: 3220880 (1965-11-01), Feuersanger
patent: 3306768 (1967-02-01), Peterson
patent: 3650815 (1972-03-01), Ghoshtagore et al.
patent: 3684585 (1972-08-01), Stroup et al.
patent: 3736107 (1973-05-01), Hale
patent: 3787229 (1974-01-01), Rudness
patent: 3914473 (1975-10-01), Hale
patent: 3919124 (1965-11-01), Friedel et al.
patent: 3974322 (1976-10-01), Drabkina et al.

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