Compositions: coating or plastic – Coating or plastic compositions – Corrosion inhibiting coating composition
Patent
1983-08-22
1986-04-29
Yarbrough, Amelia B.
Compositions: coating or plastic
Coating or plastic compositions
Corrosion inhibiting coating composition
428656, 428678, 428685, C04B 902
Patent
active
045854815
ABSTRACT:
Improved coating compositions are described for the protection of superalloys at elevated temperatures. The coatings are of the MCrAlY type where M is nickel or cobalt and are significantly improved by the addition of from 0.1-7% silicon and 0.1-2% hafnium. Coatings of the invention are preferably applied by plasma spraying and as so applied are found to be substantially more effective than prior art coatings.
REFERENCES:
patent: 4034142 (1977-07-01), Hecht
patent: 4054723 (1977-10-01), Higginbotham et al.
patent: 4094673 (1978-06-01), Erickson et al.
patent: 4109061 (1978-08-01), Beale et al.
patent: 4123595 (1978-10-01), Chang
Duvall David S.
Gupta Dinesh K.
Sohl Charles E.
United Technologies Corporation
Yarbrough Amelia B.
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