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在四球摩擦磨损试验机和 SRV微动磨损试验机上考察了 5种六元杂环化合物 (吡啶、吡嗪、嘧啶、哒嗪、三嗪 )润滑油添加剂的抗磨性能 ,采用 X射线光电子能谱分析了摩擦表面元素的化学状态 .结果表明 ,这 5种化合物都可以在不同程度上改善基础油的抗磨性能 ,其作用效果依次为嘧啶 >哒嗪 >均三嗪 >吡嗪 >吡啶 .磨损表面 N元素主要以未分解的六元 N杂环化合物或分解的有机胺以及硝基或亚硝基化合物形式存在 .在摩擦磨损过程中 ,含 N杂环化合物不仅在金属表面发生了物理吸附和化学络合吸附 ,还在边界润滑条件下发生了开环反应 .其抗磨减摩机理与杂环化合物的化学键长及共振能大小有关 .
The antiwear properties of five six-membered heterocyclic compounds (pyridine, pyrazine, pyrimidine, pyridazine and triazine) lubricating oil additives were investigated on a four-ball friction and wear tester and a SRV fretting wear tester. X-ray photoelectron spectroscopy The chemical state of the elements on the frictional surface was analyzed.The results showed that the five compounds could all improve the antiwear properties of the base oil in varying degrees, and the effect was pyrimidine> pyridazine> s-triazine> pyrazine> pyridine. The surface N element exists mainly as undivided six-membered N-heterocyclic compounds or decomposed organic amines as well as nitro or nitroso compounds.In the process of friction and wear, the N-containing heterocyclic compounds not only physically adsorbed on the metal surface, Chemical complex adsorption, but also in the boundary lubrication under the conditions of the ring-opening reaction occurs.The anti-wear and friction mechanism and heterocyclic compounds chemical bond length and the size of the resonance energy.