Quality, reliability and durability of coatings on metal and alloy products considerably depend on an adhesion of cover material to a product surface. It is proposed to improve this parameter by speeding up of the materials interpenetration process and obtainment of a solid solution in transition area. This is achieved by creation of increased concentration of the point and linear defects in a product near-to-surface layer. It is realized by preprocessing of a product surface before coating by pulse laser effect in regime of generation of increased dislocations concentration (<$E rho~"~"~10 sup 10~-~10 sup 12~roman cm sup -2 >) in processed near-to-surface layer with the thickness of about 30~-~40 microns. Stimulated by pulse laser effect mass transfer is applied to avoid formation of fragile phases in the transition area and to supply smooth transition area of physical-chemical properties. Relaxation processes are initiated in the case of fast feed of energy from the giant-pulse laser (<$E tau sub i~"~"~10~-~5O > ns and <$E q sub i~"~"~10 sup 6~-~10 sup 7~{roman W "/" cm sup 2 }>) to the metal near-to-surface layer. They are accompanied by generation of the crystalline structure defects which are entrained by mobile dislocations from the surface to the depths of tens microns. Obtained results are in good agreement with calculations made on the base of solution of 3D problem of thermal fields and stresses distribution in metal, caused by pulse laser effect.

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