四氮唑衍生物添加剂对液体石蜡和锂基脂的极压抗磨性能的影响

合成了一系列含四氮唑官能团的衍生物，并在四球摩擦磨损试验机上考察了其作为液体石蜡和锂基润滑脂添加剂的承载能力和抗磨性能，同时采用Ｘ射线光电子能谱对四氮唑官能团的抗磨作用机理进行了初步探讨。结果表明：含四氮唑官能团的衍生物添加剂能在一定程度上提高３＾＃锂基脂和液体石蜡的承载能力，并具有较好的抗磨性能。在摩擦表面膜中Ｎ的存在形式为有机氮化学态，Ｆｅ的存在形式为Ｆｅ３Ｏ４。正是这种含有机氮络合物和Ｆｅ３Ｏ４的边界润滑膜使得润滑剂的极压和抗磨作用得以明显改善。

The Effect of Several Tetrazole Derivatives as Additives on the Extreme-pressure and Antiwear Properties of Liquid Paraffin and a Lithium Grease

A series of tetrazole derivatives were synthesized. The effect of the synthetic compounds as additives in liquid paraffin and a commercial lithium grease on the load carrying capacities and anti wear properties was examined using a four ball machine. The chemical states of the elements including N and Fe on the worn steel ball surface were examined by means of X ray photoelectron spectroscopy. As the results, the tetrazole derivatives as additives in liquid paraffin and/or commercial lithium grease help to increase the load carrying capacities and anti wear ability. N and Fe exist on the worn steel ball surface in forms of organic N containing complex and Fe3O4, respectively. It is the boundary film composed of organic N containing complex, Fe 3O 4, and other compounds acts to improve the extreme pressure and antiwear bproperties of the lubricating oil and grease.