TRIBOLOGICAL BEHAVIORS OF DUPLEX DLC/Al2O3COATINGS FABRICATED USING MICRO-ARC OXIDATION AND FILTERED CATHODIC VACUUM ARC SYSTEM

X. L. Wu (), X. J. Li, X. Zhang, W. B. Xue, G. A. Cheng and A. D. Liu
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X. L. Wu: Key Laboratory of Beam Technology and Material Modification of Ministry of Education, Institute of Low Energy Nuclear Physics, Beijing Normal University Beijing 100875, P. R. China
X. J. Li: Department of Materials Science & Engineering, Beijing Normal University, Beijing 100875, P. R. China
X. Zhang: Key Laboratory of Beam Technology and Material Modification of Ministry of Education, Institute of Low Energy Nuclear Physics, Beijing Normal University Beijing 100875, P. R. China
W. B. Xue: Key Laboratory of Beam Technology and Material Modification of Ministry of Education, Institute of Low Energy Nuclear Physics, Beijing Normal University Beijing 100875, P. R. China
G. A. Cheng: Key Laboratory of Beam Technology and Material Modification of Ministry of Education, Institute of Low Energy Nuclear Physics, Beijing Normal University Beijing 100875, P. R. China
A. D. Liu: Key Laboratory of Beam Technology and Material Modification of Ministry of Education, Institute of Low Energy Nuclear Physics, Beijing Normal University Beijing 100875, P. R. China

Surface Review and Letters (SRL), 2007, vol. 14, issue 02, 193-197

Abstract: Micro-arc oxidation technique (MAO) treatment produces a layer of alumina film on the surface of the aluminum alloy. A hard and uniform tetrahedral amorphous carbon film (diamond-like carbon, DLC) was deposited on the top of the alumina layer of the 2024 aluminum alloy by a pulsed filtered catholic vacuum arc (FCVA) deposition system with a metal vapor vacuum arc (MEVVA) source. The morphology and tribological properties of the duplex DLC/Al2O3coating were investigated by a scanning electron microscope (SEM) and a ball-on-disk sliding tester. These results suggested that the duplex DLC/Al2O3coating had good adhesion and a low friction coefficient, which improved significantly the wear resistance of aluminum alloys.

Keywords: Aluminum alloy; micro-arc oxidation; DLC; FCVA; tribological behavior (search for similar items in EconPapers)
Date: 2007
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DOI: 10.1142/S0218625X07009256

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