Coated article

Details Coated article Coated article

1995-03-24

1998-05-26

Speer, Timothy

Stock material or miscellaneous articles

Composite

Of inorganic material

428689, 428697, 428699, 428701, 428702, 428632, 428633, B32B 900

Patent

active

057562237

ABSTRACT:
An article for use at high temperatures and in corrosive environments comprising a substrate of refractory metal or alloy thereof. The substrate is coated with an interlayer followed by an optional preliminary coating and a final coating of a platinum group metal. The interlayer reduces oxidation of the substrate and prevents metallic interdiffusion between the final coating and substrate contributing both to an improved tolerance of the article to the working environment and reduced manufacturing costs.

REFERENCES:
patent: 3113885 (1963-10-01), Teague
patent: 3890456 (1975-06-01), Dils
patent: 4159353 (1979-06-01), Adelsberg et al.
Darling, A.S., and Selman, G.L., "The Mechanism of Failure at High Temperatures", Platinum Metal Review, 1968, vol. 12, pp. 92-98.
Platinum Metal Review, "Diffusion in Platinum-clad Molybdenum. Limitations on High-Temperature Applications", 1962, vol. 6, p. 147.

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