METHOD FOR FABRICATED METALLIC PRODUCT SURFACE TREATMENT Russian patent published in 2008 - IPC C23C14/48 C23C14/16 

FIELD: metallurgy, processes.

SUBSTANCE: method includes removal of contaminations from surface of product and its ungreasing, location in the area of product treatment and conductive, creating of vacuum in treatment area, feeding of negative potential to the product and separately to the conductive, actuation on conductive of vacuum arc, burning in vapors of this material with plasma formation, impingement, cleaning and heating of product surface by ions of conductive, collection and diffusion of conductive ions at negative potential in the range 0-500 V. Collection and diffusion of conductive ions is implemented by two stages. At the first stage it is implemented diffusion process and collection of ions with receiving of modified layer based on elements of product material and conductive or diffusion layer with external interlayer made of conductive. After it into area of treatment it is fed reacting gas and implemented the second stage of process with collection and diffusion of ions in medium of reacting gas. At that time of the first and the second stage are chosen from ratio 1:(2-7) and during the second stage, at least, one time it is aborted feeding of reacting gas for time which is equal to 0.02-0.12 from duration of the second stage.

EFFECT: increasing of metallic products erosion resistance at holding of its high fire resistance and endurance against salt corrosion.

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