Friction behavior of lubricated zinc phosphate coatings |
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| Authors: | MCM Farias CAL Santos Z Panossian A Sinatora |
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| Affiliation: | 1. Surface Phenomena Laboratory, Department of Mechanical Engineering, School of Engineering, University of São Paulo, CEP 05508-900, São Paulo - SP, Brazil;2. Corrosion and Protection Laboratory, Institute for Technological Research, Cidade Universitária, CEP 05508-901, São Paulo - SP, Brazil;1. Indian Institute of Technology, Indore, 453 552, MP, India;2. Menon Pistons Pvt Ltd, Shiroli, Kolhapur, 416 122, MS, India;3. Dr. Daulatrao Aaher College of Engineering, Karad, 415 110, MS, India;4. College of Engineering, Pune, 411 005, MS, India;1. School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, China;2. Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming, 650500, China |
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| Abstract: | The aim of the present work is to elucidate the influence of lubricants on the friction behavior of zinc phosphated coatings and provide an explanation for the results in terms of physical–chemical interactions between lubricant and phosphate. The friction behavior was studied through a sliding wear test, with a conventional ball-on-disc configuration. Discs, made of AISI 1006 low carbon steel, uncoated and coated with zinc phosphate, were tested against bearing steel balls. A stearate sodium soap, paraffinic oil and both soap and oil were used as lubricants. The sodium stearate soap was found to have the best seizure resistance. The nature of the interfacial forces between the lubricant and surface has an important role in determining the friction behavior. |
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