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Wear Behavior of Plasma-Sprayed Al-Si/TiB2/h-BN Composite Coatings |
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| Authors: | I. Ozdemir C. Tekmen Y. Tsunekawa T. Grund |
| Affiliation: | 1. Department of Metallurgical & Materials Engineering, Bart?n University, 74100, Bart?n, Turkey 2. Materials Processing Laboratory, Toyota Technological Institute, 2-12-1 Hisakata Tempaku, 468-8511, Nagoya, Japan 3. Fakult?t für Maschinenbau, Technische Universit?t Chemnitz, Lehrstuhl für Verbundwerkstoffe, Erfenschlager Str. 73, 09125, Chemnitz, Germany |
| Abstract: | In this study, mechanically alloyed Al-12Si/TiB2/h-BN composite powder was deposited onto aluminum substrates by atmospheric plasma spraying. Wear performance of the coating was investigated with respect to the structural evolution of the composite powder coating. Non-lubricated ball-on-disk tests were used to examine the wear resistance of the coatings. The worn surfaces were examined using scanning electron microscopy and energy dispersive spectroscopy to elucidate the wear mechanisms operating at the sliding interface. It has been observed that TiB2 and in situ formed AlN and Al2O3 phases in combination with h-BN solid lubricant strongly affect the wear performance of the coating. |
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