Process for carbon bearing MCrAlY coating

Details Process for carbon bearing MCrAlY coating Process for carbon bearing MCrAlY coating

1979-10-15

1981-06-23

Newsome, John H.

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

427423, B05D 110

Patent

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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