中文摘要：

以1-丁基-3-甲基咪唑四氟硼酸盐（L-B104）、六氟磷酸盐（L-P104）及双三氟甲烷磺酰亚胺盐（L-F104）三种离子液体为研究对象,采用STA 449 C同步热分析仪、SYP1003-III运动黏度仪、Optimol SRV-IV微动摩擦磨损试验机、Micro XAM三维廓仪以及铜片腐蚀试验分别测试了这三种离子液体在混合前后其热稳定性、黏温性能、摩擦学性能以及对基底材料的腐蚀性能的变化规律.研究结果表明：L-B104＋L-P104,L-B104＋L-F104和L-P104＋LF104三个混合体系中,L-B104＋L-F104对基底材料的腐蚀性比未混合之前两种纯离子液体的腐蚀性低;其热稳定性高于纯离子液体L-B104,而接近于L-F104;这个体系在常温和高温条件下,都表现出较好的减摩抗磨性能.使用这种混合润滑剂,在实际应用中不但可以降低高成本离子液体L-F104的使用量,同时还能达到理想的润滑效果.

英文摘要：

In the present paper, the thermal behavior, viscosity-temperature characteristic, tribological properties and corrosion ability of binary ionic liquid（IL） mixture of 1-butyl-3-methyl imidazolium tetrafluoroborate（L-B104）, 1-butyl-3-methylimidazolium hexafluorophosphate（L-P104） and 1-butyl-3-methyl imidazolium bis（trifluoromethylsulfonyl）imide（L-F104） were investigated by using an STA 449 C Jupiter simultaneous TG-DSC instrumen, a SYP1003-III viscometer, an Optimol SRV-IV oscillating reciprocating friction and wear tester, a Micro XAM 3D noncontact surface mapping profiler and copper strip tests. The results indicate that binary mixture of LB104＋L-F104 was the most suitable IL among the tested samples, L-B104＋L-P104, L-B104＋L-F104 and L-P104＋LF104, to be used as lubricants. The thermal stability of equal molar mixture of L-B104 and L-F104 was similar to that of neat L-F104, and it was increased obviously as compared with neat L-B104. The corrosion level of this binary IL was lower than that of L-B104 and L-F104. The viscosity-temperature characteristic of L-B104＋L-F104 was between thecharacteristic of L-B104 and L-F104. Binary ILs L-B104＋L-F104 had good friction-reducing and anti-wear properties both at room temperature and at 100 ℃. Besides good tribological properties, the binary ILs are cost effective in comparison with L-F104.