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測量應(yīng)用案例-20210505

來源:美國布魯克海文儀器公司   2021年05月20日 16:34  
 

文獻名:Multilayer Tribofilm: An Unique Structure to Strengthen Interface Tribological Behaviors

 

 

作者  Ping Wen, Yongzhen Lei, Qianqian Yan, Yunyan Han, and Mingjin Fan

College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji, Shaanxi 721013, P. R. China

 

摘要:Tribofilm configuration under the boundary lubrication region is an essential concern to gain insight into the tribological enhancement of the two-dimensional (2D) nano materials toward base oils. In this work, several alkyl carboxylic acids modified 2D triazine-based covalent organic frameworks (ATC) nano platelets were fabricated and served as lubrication additives. When carbon atoms add up to 16, the best lubricating performance is exhibited at an additive concentration of 0.05 wt % and the friction coefficient and wear volume are, respectively, reduced by 56.0% and 89.6% as compared to those of pure PAO 10 base oil. The analysis of the focused ion beam-transmission electron microscope (FIB-TEM) on the worn surface reveals that an alternately multilayer tribofilm consisting of 2D platelet additives and oxides and/or metallic soap salts is formed on the frictional interface of steel substrate, with a well-ordered arrangement along the sliding direction, which dominates the contributions of the excellent lubrication.

 

 

關(guān)鍵詞:covalent-organic frameworks; nano additive; multilayer tribofilm; molecular modification; friction and wear

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