多功能室温液态金属在不同摩擦副条件下的润滑性能研究

发布时间：2018-04-19 21:21

本文选题：室温液态金属 + 润滑性能　；参考：《摩擦学学报》2017年04期

【摘要】：室温液态金属是一类物理化学行为非常独特的新型功能物质,其诸多性能和用途尚未可知.本论文中初步探索了Ga_(75.5)In_(24.5)和Ga_(65)In_(22)Sn_(13)两种液态金属润滑特性与摩擦配副选材间的关系.结果表明:镓基液态金属在钢及陶瓷表面的润湿性能不佳,接触角大于120°.采用AISI 52100钢和陶瓷配副时,镓基液态金属表现出良好的润滑特性和极佳的承压能力;采用AISI 52100钢自配副时,镓基液态金属的减摩效应不明显,但能较大幅度降低材料的磨损率;采用陶瓷-陶瓷配副时,镓基液态金属几乎没有润滑作用.镓基液态金属润滑特性差异与其在材料表面的摩擦化学反应有关.
[Abstract]:Liquid metal at room temperature is a kind of new functional substance with unique physical and chemical behavior. Its properties and applications are unknown. In this paper, the relationship between the lubricating properties of two kinds of liquid metal, Gaji 75.5 / Instip (24.5) and Gatit (65Insp) and the friction matching material selection, has been preliminarily explored in this paper. The relationship between the lubrication characteristics of the two kinds of liquid metal and the friction matching material selection is also discussed in this paper. The results show that the wettability of gallium based liquid metal on the surface of steel and ceramics is not good, and the contact angle is more than 120 掳. The gallium base liquid metal shows good lubricating property and excellent bearing capacity when AISI 52100 steel and ceramic pair are used, and the friction reduction effect of gallium base liquid metal is not obvious when AISI 52100 steel is used to match the pair, but the wear rate of the material can be greatly reduced. When the ceramic-ceramic pair is used, the gallium-based liquid metal has little lubricating effect. The lubricating characteristics of gallium-based liquid metal are related to the friction and chemical reaction on the surface of the material.
【作者单位】：中国科学院兰州化学物理研究所固体润滑国家重点试验室;西北工业大学材料学院;
【基金】：国家自然科学基金项目(51505459和51675510) 国家重点基础研究发展计划(2013CB632300)资助~~
【分类号】：TG111.4;TH117

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