Nickel or cobalt alloy composite

Details Nickel or cobalt alloy composite Nickel or cobalt alloy composite

1982-04-12

1985-07-23

Dean, R.

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

420438, 420443, 420446, 420447, 420588, 428680, B32B 1500

Patent

active

045308853

ABSTRACT:
An alloy having the nominal composition Ni--30/40 wt % Cr--1/5 wt % Ti--2/8 wt % Al is used for coating gas turbine components to give protection against oxidation--and sulphidation--corrosion. A specific alloy having the composition Ni--37 Cr--3 Ti--2Al is applied to a blade fabricated from a nickel superalloy by sputter ion plating to give an overlay coating up to 100 .mu.m thick. Preferably a platinum intermediate layer is flashed on to the substrate before coating. The coating alloy can additionally include rare earths, hafnium or silicon.

REFERENCES:
patent: 4054723 (1977-10-01), Higginbotham et al.
patent: 4214042 (1980-07-01), Wilson

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