| 水溶性LaF3纳米颗粒的制备及其摩擦学行为研究 |
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| 引用本文： | 张杰,朱保利,侯延超,杨广彬,张晟卯,张平余,张治军. 水溶性LaF3纳米颗粒的制备及其摩擦学行为研究[J]. 润滑与密封, 2012, 37(5): 48-51,56 |
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| 作者姓名： | 张杰 朱保利 侯延超 杨广彬 张晟卯 张平余 张治军 |
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| 作者单位： | 1. 河南大学特种功能材料教育部重点实验室 河南开封475001
2. 中国石化润滑油郑州分公司 河南郑州450001 |
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| 基金项目： | 国家自然科学基金项目(50975077) |
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| 摘 要： | 以柠檬酸为修饰剂在水溶液中合成表面修饰LaF3纳米微粒,通过X射线衍射(XRD)、傅立叶变换红外光谱(FTIR)、热重分析(TG-DTA)、激光粒度分布仪、透射电子显微镜(TEM)、X射线光电子能谱仪(XPS)等测试手段对其结构和形貌进行表征;采用四球摩擦磨损试验机考察LaF3纳米微粒作为添加剂时的摩擦学行为;采用X射线光电子能谱仪(XPS)分析钢球磨损表面的元素组成。结果表明,柠檬酸修饰的LaF3纳米微粒,平均粒径约为4 nm;LaF3纳米微粒在水中的分散性良好,作为水基添加剂,在摩擦过程中可在钢摩擦副表面的形成由Fe2O3、La2O3等为主要组成部分的边界润滑膜,因此表现出极好的抗磨减摩性能,具有很好的应用前景。
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| 关 键 词： | 三氟化镧 纳米微粒 摩擦学性能 表面修饰 |
Preparation of Water-soluble LaF3 Nanoparticles and Study on Its Tribological Properties |
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| Zhang Jie , Zhu Baoli , Hou Yanchao , Yang Guangbin , Zhang Shengmao , Zhang Pingyu , Zhang Zhijun. Preparation of Water-soluble LaF3 Nanoparticles and Study on Its Tribological Properties[J]. Lubrication Engineering, 2012, 37(5): 48-51,56 |
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| Authors: | Zhang Jie Zhu Baoli Hou Yanchao Yang Guangbin Zhang Shengmao Zhang Pingyu Zhang Zhijun |
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| Affiliation: | 1(1.Key Laboratory of Ministry of Education for Special Functional Materials,Henan University, Kaifeng Henan 475001,China;2.Lubricant Company Sinopec Corp,Zhengzhou Henan 450001,China) |
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| Abstract: | The water-soluble LaF3 nanoparticles modified by citric acid were synthesized.Their morphology and structure were characterized by X-ray diffraction(XRD),Fourier transform infrared spectroscopy(FTIR),thermal analysis(TG-DTA),laser granulometry,transmission electron microscope(TEM),and X-ray photoelectron spectroscopy(XPS).The tribological behaviors of water soluble LaF3 nanoparticles as additives in water were evaluated with a four-ball tribometer,and the elemental composition of the wear scar on steel ball surface was analyzed by X-ray photoelectron spectroscopy(XPS).The results show that the LaF3 nanoparticles,with a diameter about 4 nm and modified by a citric acid,can be well dispersed in water.As the water-based lubricant additive,a boundary film mainly composed of Fe2O3、La2O3 on the rubbed surface could be formed.Therefore,LaF3 nanoparticles have the best friction reducing and antiwear behaviors,showing promising usage potential. |
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| Keywords: | LaF3 nanoparticles tribological behavior surface modification |
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