Coating processes – Coating by vapor – gas – or smoke – Metal coating
Patent
1988-06-22
1990-04-10
Silverman, Stan
Coating processes
Coating by vapor, gas, or smoke
Metal coating
427255, 4272551, 4272552, 4272553, 427314, 556 22, 556112, 556116, G23C 1600
Patent
active
049159887
ABSTRACT:
Coatings of Group IIA metals and compounds thereof are formed by chemical vapor deposition, in which a heat decomposable organometallic compound of the formula (I) ##STR1## where M is a Group IIA metal, preferably magnesium, calcium, strontium, or barium and R is a lower alkyl or alkenyl radical containing from 2 to about 6 carbon atoms, with a heated substrate which is above the decomposition temperature of the organometallic compound. The pure metal is obtained when the compound of the formula I is the sole heat decomposable compound present and deposition is carried out under nonoxidizing conditions. Intermetallic compounds such as barium selenide can be deposited from a barium compound of formula I and a heat decomposable selenium compound under nonoxidizing conditions. Group II metal oxides and salts, such as barium titanate, are obtainable by deposition from a compound of formula I (and an additional titanium organometallic compound (under oxidizing conditions.
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Georgia Tech Research Corporation
Silverman Stan
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