Journal
JOURNAL OF TRIBOLOGY-TRANSACTIONS OF THE ASME
Volume 143, Issue 3, Pages -Publisher
ASME
DOI: 10.1115/1.4047895
Keywords
graphene; MoS2 coating; aviation lubrication; friction; wear; boundary lubrication; coatings; wear mechanisms
Categories
Funding
- Natural Science Foundation of P. R. China [51975381]
- Natural Science Foundation Project of CQ CSTC [cstc2018jcyjAX0719]
- Fundamental Research Funds for the Central Universities [2018CDXYJX0019]
- Shanghai Key Laboratory of Spacecraft Mechanism
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Four types of aviation liquid lubricants were coated on a graphene/MoS2 composite coating to form solid-liquid lubricating combinations, which significantly reduced the friction coefficient of the coating and showed the best synergistic effect under certain conditions. The study investigated the effects of different liquid lubricant types on friction and wear behaviors, highlighting the potential of these combinations for improving tribological properties.
Four kinds of aviation liquid lubricants (i.e., 4010(#), 4050(#), 4106(#), and 4109(#) oils) were homogeneously coated on the graphene/MoS2 composite coating through a spin-coating method to form the solid-liquid lubricating combinations. The tribological properties of the obtained solid-liquid combinations and pure graphene/MoS2 coating were investigated experimentally. Effects of the liquid lubricant type on the friction and wear behaviors of the solid-liquid combinations and pure graphene/MoS2 coating were studied at different applied loads and rotational speeds. Within the ranges of the applied load varying from 10 to 50 N and rotational speed varying from 750 to 1500 rpm, the presence of the above-mentioned liquid lubricants significantly reduces the friction coefficient of the pure graphene/MoS2 coating, and the reduction rate is as high as 24%. Additionally, the coating-4109(#) combination has the best synergistic effect under the above operation condition.
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