Study on the Self-Organization of an Fe-Mn-C-B Coating during Friction with Surface-Active Lubricant

Marcin Barszcz; Mykhaylo Pashechko; Krzysztof Dziedzic; Jerzy Jozwik

doi:10.3390/ma13133025

Study on the Self-Organization of an Fe-Mn-C-B Coating during Friction with Surface-Active Lubricant

Materials (Basel). 2020 Jul 6;13(13):3025. doi: 10.3390/ma13133025.

Authors

Marcin Barszcz¹, Mykhaylo Pashechko², Krzysztof Dziedzic¹, Jerzy Jozwik³

Affiliations

¹ Department of Computer Science, Electrical Engineering and Computer Science Faculty, Lublin University of Technology, 36B Nadbystrzycka Street, 20-618 Lublin, Poland.
² Department of Fundamental of Technology, Fundamentals of Technology Faculty, Lublin University of Technology, 38 Nadbystrzycka Street, 20-618 Lublin, Poland.
³ Department of Production Engineering, Mechanical Engineering Faculty, Lublin University of Technology, 36 Nadbystrzycka Street, 20-618 Lublin, Poland.

Abstract

This paper investigates the friction process between an Fe-based coating and C45 steel with surface-active lubrication, as well as examines the coating surface before and after tribological testing. As a result, it is possible to determine whether the surface undergoes self-organization during friction. Coatings were produced by hardfacing a subeutectic alloy Fe-Mn-C-B modified by silicon, nickel, chromium and copper. Tribological tests were performed using a pin-on-disc tribometer. The pin (coating) and the disc made of steel C45 were subjected to heat treatment (hardening and tempering). The tests were carried out under loads of 3 MPa, 7 MPa and 10 MPa at a constant sliding velocity of 0.4 m/s and a sliding distance of 5700 m using a surface-active lubricant (glycerine oil). Obtained results were compared with the published results of previous tests carried out under the same conditions but under a load of 20 MPa. Obtained microscopic and spectroscopic results demonstrate that that the friction pair materials (the coating made of subeutectic alloy Fe-Mn-C-B modified by Si, Ni, Cr, Cu and C45 steel) and the surface-active lubricant cause self-organization during friction. The friction surface of the coatings has a flay-laminar structure and is covered with triboreaction products. The surface shows the presence of wear-resistant compounds such as oxides, carbides, borides and nitrides.

Keywords: coatings; friction; self-organization; surface-active lubricant; wear.

Grants and funding

030/RID/2018/19/The project/research was financed in the framework of the project Lublin University of Technology-Regional Excellence Initiative, funded by the Polish Ministry of Science and Higher Education (Contract no. 030/RID/2018/19).