Surface Engineered Products Corporation

Manoir Industries, Inc.

Bodycote Metallurgical Coatings Limited

Robert Prescott

Alexander S Gorodetsky

Konstantin K Tzatzov

Edward John Redmond

Hang Zheng

Andrew George Wysiekierski

Yan Chen

Chinnia Gounder Subramanian

Gary Anthony Fisher

A method for protecting high temperature stainless steel from coking and corrosion at elevated temperatures in corrosive environments, such as during ethylene production, by coating the stainless steel with an overlay coating of MCrAlX in which M is nickel, cobalt, iron or a mixture thereof and X is yttrium, hafnium, zirconium, lanthanum or combination thereof. The overlay coating and stainless steel substrate are heat-treated to metallurgically bond the overlay coating to the substrate and to form a multiphased microstructure. The overlay coating preferably is aluminized by depositing a layer of aluminum thereon and subjecting the resulting coating to oxidation to form an alumina surface layer. An intermediary aluminum-containing diffusion coating may be deposited directly onto the stainless steel substrate prior to deposition of the overlay coating to form a protective interlayer between the stainless steel substrate and overlay coating.

Coating system for high temperature stainless steel

Growing community of inventors

Edmonton, Canada

Robert Prescott