DUPLEXAl2O3/DLC COATING ON 15SiCp/2024 ALUMINUM MATRIX COMPOSITE USING COMBINED MICROARC OXIDATION AND FILTERED CATHODIC VACUUM ARC DEPOSITION

Wenbin Xue (), Hua Tian, Jiancheng Du, Ming Hua, Xu Zhang and Yongliang Li
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Wenbin Xue: Key Laboratory for Beam Technology and Materials Modification of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China;
Hua Tian: Key Laboratory for Beam Technology and Materials Modification of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China;
Jiancheng Du: Key Laboratory for Beam Technology and Materials Modification of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China;
Ming Hua: Key Laboratory for Beam Technology and Materials Modification of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China;
Xu Zhang: Key Laboratory for Beam Technology and Materials Modification of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China;
Yongliang Li: Analytical and Testing Center, Beijing Normal University, Beijing 100875, China

Surface Review and Letters (SRL), 2012, vol. 19, issue 04, 1-8

Abstract: Microarc oxidation (MAO) treatment produces a thickAl2O3coating on the 15SiCp/2024 aluminum matrix composite. After pretreatment ofTiion implantation, a thin diamond-like carbon film (DLC) was deposited on the top of polishedAl2O3coating by a pulsed filtered cathodic vacuum arc (FCVA) deposition system with a metal vapor vacuum arc (MEVVA) source. The morphology and tribological properties of the duplexAl2O3/DLC multiplayer coating were investigated by Raman spectroscopy, scanning electron microscopy (SEM) and SRV ball-on-disk friction tester. It is found that the duplexAl2O3/DLC coating had good adhesion and a low friction coefficient of less than 0.07. As compared to a singleAl2O3or DLC coating, the duplexAl2O3/DLC coating on aluminum matrix composite exhibited a better wear resistance againstZrO2ball under dry sliding, because theAl2O3coating as an intermediate layer improved load support for the top DLC coating on 15SiCp/2024 composite substrate, meanwhile the top DLC coating displayed low friction coefficient.

Keywords: Aluminum matrix composite; microarc oxidation; DLC; MEVVA; tribological properties (search for similar items in EconPapers)
Date: 2012
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DOI: 10.1142/S0218625X12500369

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