Chemistry: electrical and wave energy – Processes and products
Patent
1985-10-04
1988-12-06
Niebling, John F.
Chemistry: electrical and wave energy
Processes and products
204 48, 204 49, 428558, 428614, C25D 312, C25D 550
Patent
active
047894415
ABSTRACT:
A substrate such as a single crystal gas turbine blade is given a protective coating by composite electrodeposition of a metal matrix M.sub.1 containing particles of CrAlM.sub.2, where M.sub.1 is Ni or Co or Fe and M.sub.2 is Y, Si, Ti, or a rare earth element. The preferred matrix is Ni or Co or NiCo and the preferred particles are CrAlY. The particle size is important and preferably 75% by weight are between 3.9 and 10.5 .mu.m. The coating is heat treated to produce interdiffusion between the constituents of the matrix and the particles.
REFERENCES:
patent: 3830711 (1974-08-01), Kedward et al.
patent: 4152223 (1979-05-01), Wallace et al.
patent: 4302322 (1981-11-01), Oda et al.
F. A. Lowenheim, Electroplating, McGraw-Hill Book Co., New York, 1978, pp. 389-399.
Foster John
Honey Francis J.
Kedward Eric C.
Restall James E.
Leader William T.
Niebling John F.
Rath Ralph R.
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