High-temperature protection layer

Details High-temperature protection layer High-temperature protection layer

1983-11-30

1985-08-27

O'Keefe, Veronica

Alloys or metallic compositions

Nickel base

Chromium containing

420445, 428678, 428679, C22C 1905

Patent

active

045377448

ABSTRACT:
High-temperature protection layer of an alloy with a base of aluminum, chromium and nickel, particularly for structural gas-turbine elements of an austenitic material. The base material of the alloy contains at least 8 to 12 atom % aluminum and 28 to 28 atom % chromium with the remainder nickel, and at least silicon and titanium are admixed to the base material as additives such that at a temperature below 900.degree. C., a passive cover layer of chromium oxide, and at a temperature above 900.degree. C., a passive cover layer of aluminum oxide is developed on the applied alloy.

REFERENCES:
patent: 3754902 (1973-08-01), Boone et al.
patent: 4248629 (1981-02-01), Pons et al.
Rolf Nordheim et al, J. of Metals, pp. 211-218, Feb. 1954.
A. Taylor, J. of Metals, pp. 1356-1362, Oct. 1956.

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