Corrosion and mechanical wear of nitrided steels in acid environment

Keywords

corrosion-mechanical destruction, anhydrous nitriding in a glow discharge, work of loading forces, internal energy.

Cite as

Stechyshyn M. S., Stechyshyna N. M., Dykha O. V., Martynyuk A. V., Liukhovets V. V., and Luk’yanyuk M. V. Corrosion and mechanical wear of nitrided steels in acid environment. Physico­chemical Mechanics of Materials. 2022. 58(5), 036-040.

Abstract

The analysis of physicochemical and tribological characteristics of corrosion and mechani­cal fracture of structural steels nitrided in anhydrous medium in an acidic model environ­ment is carried out. It is shown that the high “flexibility” of the adaptation of nitrided layers to changes in external load conditions is explained by the condition of minimizing the ΔE/А ratio, the mechanism of which may be different. In the case of elastic-plastic contact the processes in the case under fracture of structural steels nitrided in anhydrous medium occurs due to the formation of dense protective films on the fracture surface, and in the case of plastic contact – by increasing the barrier effect of the debris-layer. The influence of temperature and sucrose on the intensity of surface fracture is clarified.

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