| RESEARCH PAPER |
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| Microstructure and Tribological Properties of VN/Ag Films Fabricated by Pulsed Laser Deposition Technique |
| GUO Hongjian1,2,3, JIA Junhong1, ZHANG Zhenyu3, LIANG Bunu3, CHEN Wenyuan1,2, LI Bo1, WANG Jianyi1,2
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1 State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000;
2 University of Chinese Academy of Sciences, Beijing 100049;
3 Department of Mechanical Engineering, Lanzhou Institute of Technology, Lanzhou 730050; |
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Abstract A series of VN/Ag films varied in Ag-concentration were fabricated by pulsed laser deposition (PLD) technique and characterized by scanning electron microscope, X-ray diffraction technique, nanomechanical testing system and UMT-3 wear tester. The results showed that the deteriorating surface morphology and decreased mechanical properties of the films are attributed to the increased Ag content. The VN/Ag films with Ag-concentrations of 16% registered the enhanced tribological property compared to the others over the investigated temperatures, the friction coefficient decreased with the temperature increasing and hold the lowest value of 0.08 at 900℃. Combining with the lubricating Ag at low temperatures and the new lubrication phase generated by tribochemical reaction could be responsible to the excellent tribological performance of the VN/Ag films in a wide temperature range.
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Published: 25 January 2017
Online: 2018-05-02
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2017, Vol. 31 
