Surface modification of steels by electrical discharge treatment in electrolyte
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2014-02-25
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Abstract
In this work some experimental data about the influence of applied electrical discharge treatment in electrolyte on the surface structure of steels are discussed. The electrical discharge treatment of steel surface in electrolyte gives a modified structure with specific combination of characteristics as a result of nonequilibrium transformations. The modification is performed by a high energy thermal process in a very small volume on the metallic surface involving melting, vaporisation, activation and alloying in electrical discharges, and after that cooling of the surface with high rate in the electrolyte. The surface layer obtains a different structure in comparison to the metal matrix and it possesses higher hardness, wear resistance and corrosion resistance.