| 纳米Si3N4及其与石墨、MoS2混合填充PTFE摩擦磨损性能研究 |
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| 引用本文： | 何春霞,张静,范正国,史丽萍,路琴.纳米Si3N4及其与石墨、MoS2混合填充PTFE摩擦磨损性能研究[J].材料科学与工艺,2009,17(2):195-198. |
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| 作者姓名： | 何春霞 张静 范正国 史丽萍 路琴 |
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| 作者单位： | 南京农业大学工学院,江苏,南京,210031
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| 基金项目： | 江苏省自然科学基金，江苏省农机基金 |
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| 摘 要： | 用M-2000型摩擦磨损试验机对纳米Si3N4及其与石墨、MoS2混合填充聚四氟乙烯(PTFE)复合材料在干摩擦条件下与45#钢对磨时摩擦磨损性能进行了研究,用洛氏硬度仪对其进行了测量,用扫描电子显微镜对磨损表面进行了观察.结果表明:纳米Si3N4的加入能提高PTFE复合材料的硬度和耐磨性,纳米Si3N4与MoS2混合填充会使PTFE复合材料的耐磨性能提高更多,特别是在载荷增大时其耐磨效果更好.纳米Si3N4能阻止PTFE复合材料中磨损微裂纹的产生,在纳米Si3N4的富聚区,磨损微裂纹较少,在纳米Si3N4的贫聚区,磨损的微裂纹较多.纳米Si3N4填充PTFE复合材料的摩擦系数比纯PTFE大,且随着载荷增加有所减小,石墨的加入可降低PTFE的摩擦系数.
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| 关 键 词： | 纳米Si3N4 MoS2 石墨 PTFE 摩擦磨损 |
Friction and Wear Properties of PTFE Composites Filled with Nano-Si_3N_4,Nano-Si_3N_4-graphite or Nano-Si_3N_4-MoS_2 |
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| HE Chun-xia,ZHANG Jing,FAN Zheng-guo,SHI Li-ping,LU Qin.Friction and Wear Properties of PTFE Composites Filled with Nano-Si_3N_4,Nano-Si_3N_4-graphite or Nano-Si_3N_4-MoS_2[J].Materials Science and Technology,2009,17(2):195-198. |
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| Authors: | HE Chun-xia ZHANG Jing FAN Zheng-guo SHI Li-ping LU Qin |
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| Affiliation: | College of Engineering;Nanjing Agricultural University;Nanjing 210031;China |
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| Abstract: | The friction and wear properties of PTFE composites filled with nano-Si3N4,nano-Si3N4-graphite or nano-Si3N4-MoS2 are investigated with M-2000 wear tester.The worn surfaces of PTFE composites are examined through a scanning electric microscopy(SEM).The hardness of the materials are examined by HR-150A.It is found that the addition of nano-Si3N4 increases the wear resistance and hardness for PTFE and prevents forming of wear micro crack.MoS2 enhances wear resistant performance largely for PTFE when it mixed ... |
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| Keywords: | MoS2 PTFE |
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