C - Chemistry – Metallurgy – 25 – D
Patent
C - Chemistry, Metallurgy
25
D
C25D 3/22 (2006.01) C23C 10/02 (2006.01) C23C 10/60 (2006.01) C23C 22/30 (2006.01) C23C 26/00 (2006.01) C23C 28/00 (2006.01) C23C 30/00 (2006.01) C23F 11/18 (2006.01) C25D 3/12 (2006.01) C25D 3/56 (2006.01) C25D 5/10 (2006.01) C25D 5/50 (2006.01)
Patent
CA 2441718
The present invention relates to a zinc-diffused nickel alloy coating for corrosion and heat protection and to a method for forming such a coating. The coating method broadly comprises the steps of forming a plain nickel or nickel alloy coating layer on a substrate, applying a layer of zinc over the nickel or nickel alloy coating layer, and thermally diffusing the zinc into the nickel alloy coating layer. The coating method may further comprise immersing the coated substrate in a phosphated trivalent chromium conversion solution either before or after the diffusing step. The substrate may be a component used in a gas turbine engine, which component is formed from a steel material.
Bhatia Promila
Hanlon Thomas R.
Hodgens Henry M.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
United Technologies Corporation
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