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

Journal Article · Mon Jan 05 00:00:00 EST 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3076851· OSTI ID:21255381

Yong, Liu ^[1]; Chongtai, Luo ^[1]; Zhuyu, Ye; Jianqun, Yang; Dezhuang, Yang ^[2]

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1. 510 Institute of China Academy of Space Technology, China Aerospace Science and Technology Corporation, Lanzhou, 730000 (China)
2. Space Materials and Environment Engineering Lab, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001 (China)

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.

• OSTI ID: 21255381
• Journal Information: AIP Conference Proceedings, Vol. 1087, Issue 1; Conference: 9. international conference on protection of materials and structures from space environment, Toronto, Ontario (Canada), 20-23 May 2008; Other Information: DOI: 10.1063/1.3076851; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
CARBON FIBERS
COATINGS
COMPOSITE MATERIALS
FRICTION
FRICTION FACTOR
GRAPHITE
HARDNESS
LAYERS
MOLYBDENUM SULFIDES
REINFORCED MATERIALS
SCANNING ELECTRON MICROSCOPY
SPUTTERING
SUBSTRATES
SURFACE COATING
WEAR