Synergistic effect of micro-textures and MoS2 on the tribological properties of PTFE film against GCr15 bearing steel
| Autor: | Peiyun Zhang, Peng Rui, Bifeng Yin, Jianhua Li, Zhixiang Tian, Cao Xiaobin, Xuan Xie, Xijun Hua |
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| Rok vydání: | 2021 |
| Předmět: |
0209 industrial biotechnology
Materials science Bearing (mechanical) Mechanical Engineering Composite number 02 engineering and technology Tribology Seal (mechanical) law.invention Reciprocating motion 020303 mechanical engineering & transports 020901 industrial engineering & automation Contact surfaces 0203 mechanical engineering Mechanics of Materials law Lubrication Composite material Dry lubricant |
| Zdroj: | Journal of Mechanical Science and Technology. 35:2151-2160 |
| ISSN: | 1976-3824 1738-494X |
| Popis: | To enhance the friction and wear resistance of GCr15/PTFE sliding contact surfaces, the synergistic lubrication effect of micro-textures and solid lubricants were studied in this paper. Micro-textures were processed on GCr15 samples by Nd:YAG laser, which were filled with MoS2. Tribological performance tests were carried out on a Rtec-MFT 5000 tester. Tribological properties were optimal with the textures density of 20% and depth of 9 µm. A continuous composite solid lubricating film was formed by PTFE and MoS2. As load increases, friction coefficient of the sample shows a rapid decline and then stabilizes. With the increase of reciprocating frequency, friction curve of the sample shows a trend of slight fluctuation. When frequency is 2.7 Hz, friction coefficient is the lowest. Tribological properties of PTFE/GCr15 contact surfaces could be significantly optimized by micro-textures and MoS2, which performs favorable prospect of engineering application such as guide rails, bearings, machinery seal, etc. |
| Databáze: | OpenAIRE |
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