An investigation of the fretting behaviour of low friction coatings on steel

• Published in: Tribology international 1996-09, Vol.29 (6), p.445-455
• Main Authors: Carton, J.-F., Vannes, A.-B., Zambelli, G., Vincent, L.
• Format: Article
• Language: English
• Subjects: adhesion; Applied sciences; Contact of materials. Friction. Wear; Exact sciences and technology; fretting; low-friction coating; Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology; Metals. Metallurgy; polar diagrams; scratch test; steel
• ISSN: 0301-679X; 1879-2464
• DOI: 10.1016/0301-679X(95)00050-E

Three different low friction coatings on steel (electrolytically deposited cadmium, PTFE solid lubricant in epoxy resin and PTFE solid lubricant in polyimide resin) were studied in order to relate their fretting behaviour with mechanical properties. Particular importance was given to adhesion which was measured using a scratch test. Fretting tests were carried out on the steel substrate and on the coatings under the same conditions. The major parameters of the tribological system were identified and then quantified. The values of the parameters obtained for each coating were compared with the corresponding values for uncoated steel. The mechanical characteristics of the coatings and their fretting parameters were plotted using a polar diagram in order to give an overview of the fretting behaviour of each coating. Differences were noted and the corresponding parameters were identified. The influence of the adherence of the coating and of the fretting test load on the lifetime of the coating was determined.