Tribological Behavior of TiAlN,AlTiN, and AlCrN Coatings at Boundary Lubricating Condition |
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| Authors: | Do?u? Özkan Yaman Erarslan Egemen Sulukan Levent Kara M Alper Y?lmaz M Bar?? Ya?c? |
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| Affiliation: | 1.Department of Mechanical Engineering, National Defense University,Turkish Naval Academy,Istanbul,Turkey;2.Department of Metallurgical and Materials Engineering,Y?ld?z Technical University,Istanbul,Turkey;3.Department of Mechanical Engineering,Erzincan Binali Y?ld?r?m University,Erzincan,Turkey;4.Barbaros Naval Science and Engineering Institute,National Defense University,Istanbul,Turkey;5.Surface Science and Technology Center,Ko? University,Istanbul,Turkey |
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| Abstract: | In this study, ~?3.5 µm thick multilayer titanium alumina nitride (TiAlN), alumina titanium nitride (AlTiN), and alumina chromium nitride (AlCrN) coatings were deposited on the H13 steel surface by cathodic arc physical vapor deposition (CAPVD) method. The tribological performance of the coatings was evaluated by a tribometer at boundary lubrication condition. Then, coating surfaces were observed by optical microscope, optical profilometer, and atomic force microscope to evaluate the morphological changes, wear volumes, and tribofilm thickness. Also, scanning electron microscopy (energy dispersive X-ray) and X-ray photoelectron spectrometry analyses were applied to coating surfaces for the tribochemical evolution of the tribofilm. Results showed that AlCrN coating performed the best tribological behavior at boundary lubricated condition, when compared to TiAlN and AlTiN coatings and it can be used as a wear resistant cam tappet coating in internal combustion engines. |
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