C - Chemistry – Metallurgy – 23 – C
Patent
C - Chemistry, Metallurgy
23
C
C23C 4/04 (2006.01) C23C 4/18 (2006.01) C23C 14/02 (2006.01) C23C 14/06 (2006.01) C23C 14/08 (2006.01) C23C 14/22 (2006.01) C23C 28/00 (2006.01)
Patent
CA 2290236
A thermal barrier coating may be applied by depositing a MCrAlY bond coat onto a superalloy substrate, wherein M stands for Ni, Co, Fe, or a mixture of Ni and Co. Undesired oxides and contaminants are removed from the MCrAlY bond coat with an ionized gas stream cleaning process, such as a reverse transfer arc process. An adherent aluminum oxide scale is formed on the MCrAlY bond coat and a ceramic layer is deposited on the aluminum oxide scale by physical vapor deposition to form a columnar structure.
Burns Steven M.
Meehan Robert J.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
United Technologies Corporation
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