CORROSION AND MECHANICAL WEAR OF NITROGEN STEELS IN ACID ENVIRONMENTS

Authors

  • Prof. dr. Miroslav Stechyshyn Khmelnitsky National University
  • Prof. Dr. Aleksandr Dykha Khmelnitsky National University
  • Prof. Dr. Juozas Padgurskas Vytautas Magnus University
  • PhD. Nadiya Stechyshyna Khmelnitsky National University

Keywords:

corrosion-mechanical wear, anhydrous nitriding in the glow discharge, the work of friction forces, internal energy

Abstract

The work is devoted to the study of the tribological properties of steels and cast iron strengthened by anhydrous nitriding in a glow discharge operating in acidic environments. Electrochemical behavior, wear resistance and corrosion resistance of nitrided surfaces in technological acidic environments have not been sufficiently investigated. Without considering the influence of operational factors on wear conditions leads to premature failure of processing and food industry equipment. The results of the study of corrosion-mechanical wear of nitrided and non-nitrided steels (С20; С45; 37Cr4; 41CrAlMo7) in an acidic model environment are given. The dependences of the intensity of wear and the coefficient of friction on the pressure in the frictional contact and on the sliding, speed was obtained. Results were also obtained on the change in the ratio of corrosive and mechanical wear factors depending on the pressure and sliding speed. The analysis of the effect of the temperature of the surface layers on the tribological properties of nitrided samples operating in an acidic environment was carried out. The influence of temperature and sucrose on the intensity of destruction of surfaces was clarified. The obtained results make it possible to make the optimal selection of hardening modes and operating conditions of nitrided surfaces working in acidic production environments.

Author Biographies

Prof. dr. Miroslav Stechyshyn, Khmelnitsky National University

Department of Tribology, Automobiles and Materials Scienc

Prof. Dr. Aleksandr Dykha, Khmelnitsky National University

Department of Tribology, Automobiles and Materials Scienc

Prof. Dr. Juozas Padgurskas, Vytautas Magnus University

Institute of Power and Transport Machinery Engineering

PhD. Nadiya Stechyshyna, Khmelnitsky National University

Department of Tribology, Automobiles and Materials Science

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Published

2023-10-10

Issue

Section

FRICTION AND WEAR IN TRIBOSYSTEMS