两种杂环有机物的分子结构与其在离子液体中缓蚀、减摩抗磨性能的构效关系研究  

The Structure-Function Relationship between the Molecular Structures of Two Heterocyclic Organic Compounds and Their Corrosion Inhibiting, Friction-Reduction and Anti-Wear Performances in Ionic Liquids

作　　者：李毅[1,2] 张松伟[1,3] 丁奇[1,3] 胡丽天[1] 

机构地区：[1]中国科学院兰州化学物理研究所固体润滑国家重点实验室,甘肃兰州730000 [2]中国科学院大学,北京100049 [3]青岛市资源化学与新材料研究中心,山东青岛266071

出　　处：《摩擦学学报》2016年第6期726-735,共10页Tribology

基　　金：国家自然科学基金项目(51575506;51505462);青岛市应用基础研究计划:青年专项(14-2-4-85-JCH)~~

摘　　要：本文作者通过电化学和摩擦学测试手段,对比考察了苯并三氮唑(BTA)和糖精(SAC)两种杂环有机物在[HMIM][Cl]离子液体体系中对铜锡合金的缓蚀性能和减摩抗磨性能.然后,利用扫描电子显微镜对铜锡合金表面的腐蚀形貌和磨损形貌进行了分析表征.结果表明:BTA能够吸附在铜锡合金表面形成一层致密的聚合物保护膜,阻止Cl-对金属表面的进攻,降低离子液体的腐蚀作用,有效地抑制Cl-引发的孔蚀现象;同时,BTA还进一步提高了基础油的减摩抗磨效果.在铜锡合金表面,SAC与离子液体存在竞争腐蚀作用,低浓度时,以离子液体中Cl-的孔蚀为主,高浓度时,以均匀腐蚀为主;同时,由于促进腐蚀作用的存在,SAC的引入会延长磨合期,加剧磨损.对[HMIM][Cl]离子液体体系而言,杂环分子BTA是一种兼具优异缓蚀性能和良好减摩抗磨性能的添加剂;杂环分子SAC作为添加剂,则不具有缓蚀和减摩抗磨作用.The corrosion inhibiting, friction-reduction and anti-wear effects of [HMIM][Cl] ionic liquids （IL） system with two heterocyclic organic compounds, benzotriazole （BTA） and saccharin （SAC）, on bronze were investigated by electrochemical and tribological tests. Scanning electron microscope was used to characterize corrosion and worn areas on bronze surface. Results show that adsorbed BTA layers on the bronze surface reduced corrosion caused by IL and prohibited the severe pitting corrosion attached by CI of [HMIM][C1]. Meanwhile, IL oil samples with BTA displayed a lower friction coefficient and wear rate compared to that of IL with SAC. Moreover, in the tribological test, the oil containing SAC extended the run-in period and exacerbated the wear of bronze. In conclusion, BTA was an excellent additive for IL system, with outstanding corrosion inhibition, good friction-reduction and anti-wear performances. While SAC, had limited effect of corrosion inhibiting, friction-reduction and anti-wear on bronze.

关 键 词：杂环分子 离子液体 缓蚀性能 减摩抗磨性能 构效关系 

分 类 号：TH117[机械工程—机械设计及理论]