Study of Tribological Properties of MoS{sub 2}+Graphite Sputtered Composite Coatings under various Environment Pressures

MoS{sub 2}+Graphite composite coatings were synthesized onto 2024 aluminum alloy substrates by sputtering. The friction and wear test were performed at different environment pressures in vacuum using a ball-on-disk tribometer. The worn surface of the coating was examined by scanning electron microsc...

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Bibliographic Details
Published in:AIP conference proceedings 2009-01, Vol.1087 (1)
Main Authors: Liu Yong, Space Materials and Environment Engineering Lab, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001, Luo Chongtai, Ye Zhuyu, Yang Jianqun, Yang Dezhuang
Format: Article
Language:English
Subjects:
ALUMINIUM ALLOYS
CARBON FIBERS
COATINGS
COMPOSITE MATERIALS
FRICTION
FRICTION FACTOR
GRAPHITE
HARDNESS
LAYERS
MATERIALS SCIENCE
MOLYBDENUM SULFIDES
REINFORCED MATERIALS
SCANNING ELECTRON MICROSCOPY
SPUTTERING
SUBSTRATES
SURFACE COATING
WEAR
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Summary:MoS{sub 2}+Graphite composite coatings were synthesized onto 2024 aluminum alloy substrates by sputtering. The friction and wear test were performed at different environment pressures in vacuum using a ball-on-disk tribometer. The worn surface of the coating was examined by scanning electron microscopy (SEM). The results show that the friction coefficients and wear rate are increasing with increased environment pressure. A second surface layer was formed on the worn surface, that is harder than the original surface. The hardness of this second surface layer is decreased with increasing environment pressure.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.3076851