Morphologies of the wear debris of polyetheretherketone produced under dry sliding conditions: Correlation with wear mechanisms |
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| Authors: | G. Zhang A.K. Schlarb |
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| Affiliation: | 1. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, ul. Vavilova 28, Moscow, 119991, Russia;2. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 117901, Russia;1. Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, IN 47405, United States;2. Department of Chemistry, Indiana University-Purdue University Indianapolis, 402 N. Blackford St., Indianapolis, IN 46202, United States;3. Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 339-701, South Korea;4. Center for Catalytic Hydrocarbon Fuctionalization, Institute for Basic Science (IBS), Daejeon 339-701, South Korea;1. Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, 310012, PR China;2. Department of Chemistry, Rhodes University, Grahamstown 6140, South Africa;1. School of Metallurgy and Materials, College of Engineering, University of Tehran, Tehran, Iran;2. College of Engineering, Semnan University, Semnan, Iran;1. Centre for Advanced Materials Technology, School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, Sydney, NSW, 2006, Australia;2. The King Abdulaziz City for Science and Technology, The National Centre for Building and Construction Technology, P O Box 6086, Riyadh, 11442, Saudi Arabia;1. Arts et Métiers ParisTech, PIMM – UMR CNRS 8006, 151 Boulevard de l’Hôpital, 75013 Paris, France;2. Valeo Thermique Habitacle, Valeo Powertrain Thermal Systems, 8 Rue Louis Lormand, 78321 La varrière, France;3. Arts et Métiers ParisTech, Dynfluid – UMR CNRS 8006, 151 Boulevard de l’Hôpital, 75013 Paris, France;4. Ecole Nationale d’Ingénieurs de Sousse, LMS, Pôle Technologique, Route de Ceinture, 4054 Sousse, Tunisia |
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| Abstract: | Wear debris contains extensive information on the tribological behaviours of materials [M.Q. Zhang, Z.P. Lu, K. Friedrich, On the wear debris of polyetheretherketone: fractal dimensions in relation to wear mechanisms, Tribol. Int. 30 (1997) 87–102]. Investigations on wear debris morphology will be helpful for understanding materials’ friction and wear processes. In this work, the wear debris obtained from block-on-ring (BOR) tests of three polyetheretherketones (PEEKs) with different molecular weights was studied. The mechanical properties of the three PEEKs were characterized in a previous work [G. Zhang, A.K. Schlarb, Correlation of the tribological behaviors with the mechanical properties of poly-ether-ether-ketones (PEEKs) with different molecular weights and their fiber filled composites, Wear, 2008, in press]. In this work, the influences of the mechanical properties of PEEKs and apparent pressure on wear debris morphology were studied. Based on analyzing wear debris morphologies, possibly involved tribological mechanisms were discussed. The results indicate that the tribological mechanisms have a close relationship with the morphology of the wear debris. Under low pressures, particle-like wear debris suggests that the micro-cutting effect exerted by the protruding regions of the counterpart dominates the tribological behaviour. Under high pressures, rod-like, bamboo-raft-like and film-like debris were noticed. This fact suggests that the transferring of PEEK to the counterpart and the plastic flow occurring in the PEEK surface layer play important roles on material loss. |
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