Method of applying a ceramic coating to a metal workpiece

Details Method of applying a ceramic coating to a metal workpiece Method of applying a ceramic coating to a metal workpiece

1980-09-15

1981-12-01

Kendall, Ralph S.

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

427318, B05B 722

Patent

active

043036937

ABSTRACT:
A method of applying a ceramic coating to a metallic workpiece is proposed in which the workpiece is heated in a range of 500.degree. C. to 950.degree. C. and the coating directly plasma sprayed thereon in an atmosphere of air before the workpiece has formed any considerable oxide skin thereon. In this way the use of the conventional bond coat is avoided, while the amount of tensile stress on the ceramic at working temperature is reduced by the pre-stressing effect thus induced.

REFERENCES:
patent: 3493415 (1970-02-01), Grisaffe et al.
patent: 3839618 (1974-10-01), Muehlberger
patent: 4163071 (1975-07-01), Weatherly et al.

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