苯并三氮唑及其衍生物在菜籽油中的摩擦学性能研究

利用四球试验机考察了苯并三氮唑及其衍生物在菜籽油中的摩擦学性能，并用X射线光电子能谱和扫描电子显微镜分析观察磨斑表面的化学组成和形貌。结果表明，苯并三氮唑在菜籽油中有良好的抗磨作用，在其分子中引入长链烷基虽然提高了其在菜籽油中的溶解度，但却降低了其抗磨减摩性能，这主要是由于苯并三氮唑有效成分的减少以及添加剂和基础油之间的竞争吸附所致。

Tribological Properties of Benzotriazole and Its Derivatives as Additives in Rapeseed Oil

The tribological properties of benzotriazole and its derivatives as additives in rapeseed oil were investigated using a four ball machine. The morphologies and chemical features of the worn steel surfaces were observed and examined by means of X ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM). As the results, benzotriazole as an additive increase the antiwear ability of the base stock to some extent but has no effect on the extreme pressure properties, while the derivative with long chain alkyl decreases the antiwear ability of the base stock though it has better solubility therein. SEM observation of the worn steel surface and XPS examination of the chemical states of N on the worn surface indicate that a surface protective film was formed on the worn surface, by way of chemisorption and/or tribochemical reaction. The wear of SAE52100 steel under the lubrication of rapeseed oil and rapeseed oil containing benzotriazole derivatives is characterized by scuffing.