Method for producing elevated temperature corrosion resistant ar

Details Method for producing elevated temperature corrosion resistant ar Method for producing elevated temperature corrosion resistant ar

1977-10-31

1980-04-15

Newsome, John H.

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

75171, 427405, 427423, 428667, 428677, 428678, 428679, 4273768, 4273839, B05D 306

Patent

active

041984420

ABSTRACT:
A method for the production of metal articles resistant to corrosion at elevated temperatures. The method involves the application of a first coating on an article surface, this coating comprising a cobalt, iron or nickel alloy which is compatible with the substrate and which is ductile in character. A second coating highly resistant to corrosion at elevated temperatures is applied over the first coating to form a composite coating, and an elevated temperature treatment follows to provide interfacial bonding and to minimize the detrimental effects of thermal and mechanical stresses encountered during use. The provision of a ductile first layer provides a barrier against degradation of the corrosion resistance of the outer layer and serves as a barrier against detrimental interdiffusion and crack propagation.

REFERENCES:
patent: 3928026 (1975-12-01), Hecht et al.
patent: 4005989 (1977-02-01), Preston

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