Method of producing multicomponent diffusion coatings on metal articles and apparatus for performing same

摘要

A method of producing multicomponent diffusion coatings on metal articles comprises 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 T1 equalling 0.3 to 0.5 of the melting point of the material of this article, with the difference T-T1 being at least 50 DEG 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.