Superalloy coating composition with oxidation and/or sulfidation

Details Superalloy coating composition with oxidation and/or sulfidation Superalloy coating composition with oxidation and/or sulfidation

1982-04-23

1986-10-07

Dean, R.

Alloys or metallic compositions

Cobalt base

Chromium containing

420438, 420443, 420444, 420445, 148425, 148428, C22C 1900

Patent

active

046158642

ABSTRACT:
Coatings for iron-, nickel- and cobalt-base superalloys. The coatings are applied in order to provide good oxidation and/or sulfidation and thermal fatigue resistance for the substrates to which the coatings are applied. The coatings consist essentially of, by weight, 10 to 50% chromium, 3 to 15% aluminum, 0.1 to 10% manganese, up to 8% tantalum, up to 5% tungsten, up to 5% reactive metal from the group consisting of lanthanum, yttrium and other rare earth elements, up to 5 percent of rare earth and/or refractory metal oxide particles, up to 12% silicon, up to 10% hafnium, and the balance selected from the group consisting of nickel, cobalt and iron, and combinations thereof. Additions of titanium up to 5% and noble metals up to 15% are also contemplated.

REFERENCES:
patent: 4219592 (1980-08-01), Anderson et al.

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