烷基亚磷酸氮杂环胺盐添加剂润滑性能的研究

STUDY ON THE TRIBOLOGY BEHAVIORS OF N－CONTAINING HETERCYCLIC P－N ADDITIVES

合成了几种烷基亚磷酸氮杂环胺盐，并对其摩擦性能、抗氧化安定性和抗腐蚀性能进行了研究。结果表明，所合成的磷氮（P－N）剂具有好的极压抗磨减摩性能，与亚磷酸-正丁酯（T304）和硫代磷酸复酯胺盐（T307）相比，其抗磨减摩效果，特别是PN－2在较高温度下具有较低的摩擦系数。油浸试验反应膜强度划痕试验表明，反应膜与试块底材的结合强度与最大无卡咬负荷之间存在着一定的相关性。X-射线光电子能谱（XPS）和俄欧电子能谱（AES）分析表明，P－N剂在摩擦表面形成了一层含磷、氮元素的化学保护膜，其中元素磷以磷酸铁形式存在，元素氮以原来的价态形式存在，但元素氮参与了整个摩擦过程。

several N－containing hetrocyclic salts of alkylphosphite were synthesized， and their tritrology behaviors were studied． The resuls showed that the P-N agents possess good extreme Pressure，antiwear and friction reduction properties as compared with T304 and T307． The friction coefficient of PN2 agent is much lower than T304 and T307 at 250℃． The correlation between the bonding strength of the reaction film to the substrate and the maximum non－seizure load Is good． X－ray photoelectron spectroscopy and Anger electron spectroscope analyses indicated that the P－N agents can form a tribochemical reaction film containing N and P on the rubbing surface． Element P exists in the form of FePO4 and N exists in the original valence state on the rubbing surface． It is understood that N has entered into the whole friction course．