Coating processes – Direct application of electrical – magnetic – wave – or... – Pretreatment of substrate or post-treatment of coated substrate
Patent
1998-12-15
2000-03-28
Bareford, Katherine A.
Coating processes
Direct application of electrical, magnetic, wave, or...
Pretreatment of substrate or post-treatment of coated substrate
427540, 427454, 4272481, C23C 1402
Patent
active
060428988
ABSTRACT:
A thermal barrier coating may be applied by depositing a MCrAIY 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 MCrAIY 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 MCrAIY bond coat and a ceramic layer is deposited on the aluminum oxide scale by physical vapor deposition to form a columnar structure.
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Herman, H. and Sampath, S., The Thermal Spray Laboratory, Department of Materials Science and Engineering State University of New York: Thermal Spray Coatings, 15 pages. (no date).
Burns Steven M.
Meehan Robert J.
Bareford Katherine A.
Romanik George J.
United Technologies Corporation
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