Stduy on the Tribological Performances of a Novel Nitrogen-containing Heterocyclic Lubricating Additive
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摘要: 通过四球试验机、环块试验机和万能摩擦磨损试验机,考察了制备的新型无硫磷含氮杂环润滑添加剂在液体石蜡基础油中的摩擦学性能,采用扫描电子显微镜和X射线光电子能谱仪分析了磨斑表面形貌及典型元素的化学状态。结果表明:该添加剂能显著增加基础油的承载能力,降低长磨实验的磨斑直径和环块实验的摩擦系数,并在摩擦过程中发生了摩擦化学反应,在摩擦表面形成了以氧化亚铁、有机氮化物和含氮金属配合物等为主要成分的摩擦反应膜,从而有效提高了基础油的摩擦学性能。Abstract: Study on the tribological properties of a prepared novel zero-sulphur/phosphorus nitrogen-containing heteocyclic lubricating additive in the base oil of liquid paraffin is made by four-ball tester, ring-block test machineand all-purpose tribometer, the topographies and chemical characteristics of the worn steel-ball surfaces are analyzed by means of scanning electron microscope and X-ray photoelectron spectroscopy. The resulsts indicate that theadditive can evidently enhance the load-carrying capacity of the base oil, reduce the wear-scar dameter in long-timefriction test and diminish the coefficient of friction in block-on-ring test. It is supposed that the additive reacts withthe steel surfaces during the rubbing process and generates a tribochemical reaction film mainly composed of ferrousoxide, organic containing-nitrogen compounds and nitrogen-containing metallic chelate, which is effective on improving the friction and wear characteristcs of the base oil.
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Key words:
- nitrogen-containing heterocycle /
- lubricaion /
- additive /
- tribological performances
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