| 镧－硼复合润滑添加剂的协合润滑机理 |
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| 引用本文： | 陈波水,董浚修,陈国需,叶毅.镧－硼复合润滑添加剂的协合润滑机理[J].中国稀土学报,1996(4). |
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| 作者姓名： | 陈波水 董浚修 陈国需 叶毅 |
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| 作者单位： | 后勤工程学院油品应用化学系 |
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| 基金项目： | 国家自然科学基金,重庆市中青年科技专家基金 |
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| 摘 要： | 实验室和工业试验表明，含镧的润滑添加剂二烷基二硫代磷酸镧（ＬａＤＤＰ）和一种有机硼酸酯（ＯＢ）具有显著的协合润滑作用，将两种化合物复合加至润滑油中，可显著改善油品的抗磨减摩性能。采用俄歇电子能谱（ＡＥＳ）和Ｘ射线光电子能谱（ＸＰＳ）研究其协合润滑机理。结果表明，ＬａＤＤＰ和ＯＢ具有协合润滑作用的主要原因，除了在摩擦表面生成硫酸盐、磷酸盐、氧化镧和单质硼等表面膜起润滑作用外，更重要的是镧的存在对硼的摩擦扩散起到了“摩擦催渗”作用，使摩擦亚表面硼的含量增加，并形成Ｌａ－Ｂ摩擦共渗层，进一步提高材料表面硬度，从而改善耐磨性能
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| 关 键 词： | 稀土化合物，硼酸酯，润滑添加剂，摩擦扩散 |
Synergistic Lubrication Mechanism of a Lanthanum Boron Composite Lube Additive |
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| Chen Boshui,Dong Junxiu,Chen Guoxu,Ye Yi.Synergistic Lubrication Mechanism of a Lanthanum Boron Composite Lube Additive[J].Journal of the Chinese Rare Earth Society,1996(4). |
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| Authors: | Chen Boshui Dong Junxiu Chen Guoxu Ye Yi |
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| Abstract: | xperimental results indicate that lanthanum dialkyldithiophosphate(LaDDP) and an organo borate(OB) exhibit excellent lubrication synergism. Auger electron spectroscopy(AES) and X ray photoelectron spectroscopy(XPS) are employed to study the synergistic mechanism. Results demonstrate that the synergism can be attributed on one hand to the formation of a surfacial film mainly composed of sulphate, phosphate, lanthana, organo borate and atomic boron, on the other hand to the formation of a permeation layer of lanthanum and boron. Tribodiffusion of boron can be promoted by lanthanum, which increases microhardness and therefore improves the wear resistance of friction pairs. |
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| Keywords: | Rare earth compound Organo borate Lube additive Tribodiffusion |
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