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| 表面修饰SiO2纳米微粒对锂基脂抗磨性能影响的研究 | |
| 引用本文： | 曹智,李小红,张治军,党鸿辛,张明,王晓波,刘维民.表面修饰SiO2纳米微粒对锂基脂抗磨性能影响的研究[J].摩擦学学报,2005,25(5):390-393. |
| 作者姓名： | 曹智 李小红 张治军 党鸿辛 张明 王晓波 刘维民 |
| 作者单位： | 1. 河南大学,特种功能材料重点实验室,河南,开封,475001 2. 河南大学,特种功能材料重点实验室,河南,开封,475001;中国科学院兰州化学物理研究所,固体润滑国家重点实验室,甘肃,兰州,730000 3. 中国科学院兰州化学物理研究所,固体润滑国家重点实验室,甘肃,兰州,730000 |
| 基金项目： | 国家高技术研究发展计划(863计划) |
| 摘 要： | 合成了表面修饰SiO2纳米微粒,利用四球摩擦磨损试验机考察了SiO2纳米微粒作为锂基脂添加剂的摩擦磨损行为,用扫描电子显微镜、能量色散谱仪和X射线光电子能谱仪对钢球磨损表面进行了分析.结果表明:SiO2纳米微粒作为锂基脂添加剂具有良好的抗磨损性能,能够显著提高锂基脂的失效载荷.这是由于在摩擦过程中,SiO2纳米微粒富集在磨损表面并形成边界润滑膜,对磨损表面起到修复作用,从而使得锂基脂的抗磨和承载能力明显提高. |
| 关 键 词： | 纳米微粒 润滑脂 抗磨性能 |
| 文章编号： | 1004-0595（2005）05-0390-04 |
| 收稿时间： | 2004-12-15 |
| 修稿时间： | 2005-03-03 |
Effect of SiO2 Nanoparticles as Additive on Antiwear and Extreme Pressure Properties of Lithium Grease |
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| CAO Zhi,LI Xiao-hong,ZHANG Zhi-jun,DANG Hong-xin,ZHANG Ming,WANG Xiao-bo,LIU Wei-min.Effect of SiO2 Nanoparticles as Additive on Antiwear and Extreme Pressure Properties of Lithium Grease[J].Tribology,2005,25(5):390-393. | |
| Authors: | CAO Zhi LI Xiao-hong ZHANG Zhi-jun DANG Hong-xin ZHANG Ming WANG Xiao-bo LIU Wei-min |
| Institution: | 1. Key Lab for Special Functional Materials, Henan University, Kai feng 475001, China; 2. State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lnazhou 730000, China |
| Abstract: | Surface modified SiO_2 nanoparticles were synthesized. A four-ball machine was used to investigate the tribological behavior of SiO_2 nanoparticles as additive in lithium grease. The worn surfaces of steel balls were analyzed by means of scanning electron microscopy (SEM), energy dispersion spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS). Analytical results indicate that SiO_2 nanoparticles as additive can increase antiwear ability and load-carrying capacity of lithium grease. The reason is that SiO_2 nanoparticles can deposited in boundary film play the role of self-replentish in the worn surface. |
| Keywords: | SiO2 |
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