Title: High temperature resistant diffusion coating

Abstract: Dispersion-strengthened nickel and nichrome protected by an aluminum diffusion coating over a chromium diffusion coating, have their resistance to oxidation at extremely high temperatures increased by including cobalt with the chromium diffusion coating. Aluminum diffusion can be effected with an energizer kept out of contact with workpieces by being confined in porous containers.

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Inventors: Baldi, Alfonso L. (Drexel Hill, PA, US)

Application Number: 304220
Filing Date: 1972-11-06
Publication_date: 1976-02-03
Assignee: Alloy Surfaces Company, Inc. (Wilmington, DE)
Primary Class(es): 427/253 118/715, 148/283
Other Classes:
US Patent Ref:

1902503	Mar, 1933	Howe	117/107.
3096160	Jul, 1963	Puyear	117/107.
3286684	Nov, 1966	Aves	117/107.

Other Refs: 1,182,407

Feb, 1970	UK

Primary Examiner: Schulz, William E.
Assistant Examiner:
Attorney: Connolly and Hutz