Process for carbon bearing MCrAlY coating

Coating processes – Electrical product produced – Integrated circuit – printed circuit – or circuit board

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427423, B05D 110

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active

042750903

ABSTRACT:
A method of applying a wear resisting MCrAlY coating is comprised of plasma spraying a mixture of MCrAlY and Cr.sub.3 C.sub.2 powders to form a coating having both fine carbides and coarser Cr.sub.3 C.sub.2 carbides in an MCrAlY matrix. Heat treatment at 1080.degree. C. after coating bonds the substrate and coating and forms further fine carbides. The coating desirably consists of by weight percent 18-80 Cr, 1.2-29 Al, up to 4.8 Y, 0.6-11 C, balance selected from the group consisting of Ni, Co, Fe, or mixtures thereof.

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