.beta.-Alumina coating

Details .beta.-Alumina coating .beta.-Alumina coating

1981-12-16

1983-07-26

Beck, Shrive P.

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

4271264, 427422, 427423, B05D 108, B05D 512

Patent

active

043954324

ABSTRACT:
Disclosed is a method of coating a substrate with .beta.-alumina, a compound of alumina and an alkali metal oxide, while maintaining its electrically conductive properties. A powdered mixture is formed of the .beta.-alumina and a carbonate of the alkali metal. The mixture is sprayed through a source of heat sufficient to melt it onto the substrate. A plasma spray torch can be used to melt spray the mixture.

REFERENCES:
patent: 3901733 (1975-08-01), Toy
patent: 4082826 (1978-04-01), Iijima
patent: 4225785 (1980-09-01), Ducos et al.
patent: 4244986 (1981-01-01), Paruso et al.

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