Abrasive wear behavior of sprayed hydroxyapitite coatings by gas tunnel type plasma spraying |
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| Affiliation: | 1. University of Belgrade, Innovation Center of Faculty of Technology and Metallurgy, Karnegijeva 4, Po. Box 3503, 11120 Belgrade, Serbia;2. University of Belgrade, Vin?a Institute of Nuclear Sciences, Mike Petrovi?a Alasa 12–14, 11001 Belgrade, Serbia;3. Plasma Jet Co., Brani?evska 29, 11000 Belgrade, Serbia;4. Center for Solid State Physics and New Materials, Institute of Physics, University of Belgrade, Pregrevica 118, 11080 Zemun, Serbia;5. University of Belgrade, Faculty of Mining and Geology, ?u?ina 7, 11000 Belgrade, Serbia;6. University of Belgrade, Faculty of Technology and Metallurgy, Department of Metallurgical Engineering, Karnegijeva 4, 11120 Belgrade, Serbia;1. Department of Mechanical Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia;2. Department of Manufacturing and Materials Engineering, International Islamic University Malaysia, P.O. Box 10, 50728 Kuala Lumpur, Malaysia;1. University of Belgrade, Innovation Center of Faculty of Technology and Metallurgy, Karnegijeva 4, 11120 Belgrade, Serbia;2. University of Belgrade, Vin?a Institute of Nuclear Sciences, Mike Petrovi?a Alasa 12-14, 11001 Belgrade, Serbia;3. Plasma Jet Co, Brani?evska 29, 11000 Belgrade, Serbia;4. Center for Solid State Physics and New Materials, Institute of Physics, University of Belgrade, Pregrevica 118, 11080 Zemun, Serbia;5. SPMS-CBC, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore;6. University of Belgrade, Faculty of Technology and Metallurgy, Department of Metallurgical Engineering, Karnegijeva 4, 11120 Belgrade, Serbia;1. Chonbuk National University, 664-14 Duckjin-dong, Jeonju, 561756, South Korea;2. National Nanofab Center, 53-3 Eoeun-dong, Daejeon, 305806, South Korea;3. National University of Science and Technology “MISiS”, Moscow, 119049, Russia |
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| Abstract: | Hydroxyapatite (HA) coatings were sprayed using gas tunnel type plasma spraying at different arc currents. Abrasive wear test was carried out for the coatings sprayed at different arc currents under unlubricated conditions in air atmosphere. The abrasive wear rate was measured at different coatings thickness to study the effect of coating thickness on the anti-abrasion resistance of HA coatings. The results showed that the abrasive wear resistance of HA coatings increases as the operating arc current of the plasma torch increases. On the other hand, the abrasive wear rate reaches a minimum value near the substrate with coating thickness less than 50 μm. The results showed that the coating hardness increases in the region near the substrate and increases as the arc current increases. The experimental results indicated that there is a relation between the abrasion resistance and hardness properties of HA coatings. |
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