期刊
MATERIALS RESEARCH EXPRESS
卷 6, 期 8, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/2053-1591/ab2028
关键词
nano-technology; solid lubricants; sliding wear; surface analysis; nano-materials; aerospace applications
资金
- Project for Science and Technology Plan of Wuhan City [2013010501010139]
- Key Project for Science and Technology Plan of Henan province [152102210119]
The present work aims to extend the use of NiAl based nano-composites at different sliding conditions for aerospace bearing systems. A hybrid lubricant of V2O5 nano-wires and graphene nano-platelets (GNPs) has been used. NiAl + 5 wt% V2O5 nano-wires (NV) and NiAl + 5 wt% + 1.5 wt% GNPs (NVG) nano composites have been fabricated and tested. NVG nano-composites showed superior wear resistance at different sliding speeds at RT due to the self -healing properties of GNPs. Furthermore, NVG nano-composites exhibited reasonable wear characteristics at extreme temperatures. NV nano-composites showed better wear resistance at temperatures higher than 600 degrees C in the comparison to NVG nano composites. This behavior was attributed to the formation of an abrasive phase of carbides on the contact surface of NVG nano-composites at elevated temperatures.
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