To read this content please select one of the options below:

Influence of fluor‐oligomers on the structural and tribological properties of steel surface at the rolling friction

Juozas Padgurskas (Department of Mechanical Engineering, Lithuanian University of Agriculture, Kauno r., Lithuania)
Raimundas Rukuiza (International Department, Lithuanian University of Agriculture, Kauno r., Lithuania)
Arunas Amulevicius (Nuclear and Envir. Radioact. Res. Laboratory, Institute of Physics, Vilnius, Lithuania)
Ceslovas Sipavicius (Nuclear and Envir. Radioact. Res. Laboratory, Institute of Physics, Vilnius, Lithuania)
Kestutis Mazeika (Nuclear and Envir. Radioact. Res. Laboratory, Institute of Physics, Vilnius, Lithuania)
Rimantas Davidonis (Nuclear and Envir. Radioact. Res. Laboratory, Institute of Physics, Vilnius, Lithuania)
Antanas Daugvila (Nuclear and Envir. Radioact. Res. Laboratory, Institute of Physics, Vilnius, Lithuania)
Henrikas Cesiulis (Department of Physical Chemistry, Faculty of Chemistry, Vilnius University, Vilnius, Lithuania)

Industrial Lubrication and Tribology

ISSN: 0036-8792

Article publication date: 15 August 2008

235

Abstract

Purpose

The purpose of this paper is to investigate the influence of fluor‐oligomeric coat on the mechanical properties of steel surface, as well as the chemical interaction of fluor‐oligomeric films with surface and theoretical‐phenomenological interpretation of structural processes in friction surface.

Design/methodology/approach

Four groups of specimens were studied: two groups of specimens without any wear tests – initial steel specimen as control version and a specimen which was ten times coated by fluor‐oligomer, and two groups of specimens, which were tribologically tested for one million cycles – without any coating and coated specimens. Closed kinematical profile scheme roller‐roller of steel 45 was chosen for tribological tests. Wear of friction surface after those tests was investigated. The interaction between fluor‐oligomer and iron was studied by means of Mössbauer spectroscopy. The micro‐hardness of matrix was also measured.

Findings

Affecting the surface of steel by the fluor‐oligomer and friction produces the complicated processes of carbide decay and formation occur. The mechanisms are found which are related to the weakening of chemical bond in steel during the absorption, to the generation of microscopic ruptures, to the decrease (30‐50 per cent) of the amount of carbides and its increase during the friction (up to 50 per cent). The mechanical effect which causes the regeneration of carbides during friction is revealed. Tribological efficiency of fluor‐oligomeric coats (five times lower wear of coated specimens) is explained by the balance of three processes – the softening of matrix during adsorption, the detention of dislocations, and formation of hard particles in the matrix.

Originality/value

The complex mechanism of the increase of wear resistance is explained by filling of ductile matrix with carbide particles.

Keywords

Citation

Padgurskas, J., Rukuiza, R., Amulevicius, A., Sipavicius, C., Mazeika, K., Davidonis, R., Daugvila, A. and Cesiulis, H. (2008), "Influence of fluor‐oligomers on the structural and tribological properties of steel surface at the rolling friction", Industrial Lubrication and Tribology, Vol. 60 No. 5, pp. 222-227. https://doi.org/10.1108/00368790810895141

Publisher

:

Emerald Group Publishing Limited

Copyright © 2008, Emerald Group Publishing Limited

Related articles