Method of producing multicomponent diffusion coatings on metal a

Details Method of producing multicomponent diffusion coatings on metal a Method of producing multicomponent diffusion coatings on metal a

1985-10-17

1986-11-25

Silverberg, Sam

Coating processes

Immersion or partial immersion

Molten metal or fused salt bath

118429, C23C 858

Patent

active

046248714

ABSTRACT:
A method of producing multicomponent diffusion coatings on metal articles mprises the steps of separately dissolving in a transport melt the alloying elements at temperature T equalling 0.5 to 0.8 of their respective melting points, and saturating with these alloying elements by diffusion the surface of a metal article at temperature T.sub.1 equalling 0.3 to 0.5 of the melting point of the material of this article, with the difference T-T.sub.1 being at least 50.degree. C. To perform this method, the apparatus comprises a central chamber for accommodating the transport melt and the metal article to be coated, and two (in one embodiment) peripheral chambers for accommodating the transport melt and the respective individual alloying elements, communicating via ducts. All the chambers and ducts have heating elements arranged thereon.

REFERENCES:
patent: 2656595 (1953-10-01), Stern

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