C - Chemistry – Metallurgy – 23 – C
Patent
C - Chemistry, Metallurgy
23
C
C23C 20/08 (2006.01) C23C 28/02 (2006.01) C25D 13/02 (2006.01) C25D 13/14 (2006.01)
Patent
CA 2681000
A mixture and technique for coating an internal surface of an article is generally described. In one aspect, a method includes introducing a mixture comprising an aluminum source and an organo halocarbon activator into an internal cavity of an article. In some embodiments, the method may further include heating the article and the mixture to a temperature sufficient to form an aluminum halide, which deposits on a surface of the internal cavity to form a coated article. In further embodiments, the method may also include depositing on an external surface of the article a first layer comprising Pt, Si, and a reactive element selected from the group consisting of Hf, Y, La, Ce, Zr, and combinations thereof, and depositing a second layer comprising Al on the first layer to form an alloy including a .gamma.--Ni + .gamma.'-Ni3Al phase constitution, where the second layer is deposited with the organo halocarbon activator.
Creech George Edward
Cupp Randall Jay
Gowling Lafleur Henderson Llp
Rolls-Royce Corporation
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