触变剂对硅油基磁流变液摩擦磨损性能的影响
|
摘要
选择高岭土和纳米二氧化硅为触变剂,考察了触变剂类型及含量对硅油基磁流变液的摩擦磨损性能的影响,记录了摩擦系数随时间的变化曲线,测量了磨斑直径,采用SEM观察了磨斑的表面形貌,分析了磨损机理。结果表明,纳米二氧化硅在磁流变液中的抗磨性能优于高岭土。随着二氧化硅含量的增加,磁流变液的润滑性能变差,而磁流变液的抗磨性能在二氧化硅含量为1%时出现最佳值。硅油基磁流变液的磨损机理为三体磨粒磨损,触变剂的加入对磁流变液的磨损形式没有影响,但改善了磨损环境。
The influence of the types and content of thixotropies on tribological properties of methyl silicon oil-based magnetorheological(MR) fluids were investigated on a four-ball tribological tester.The effect of thixotropy on friction coefficient and wear scar diameter was discussed.And the morphologies of the wear steel surfaces lubricated with MR fluids were observed by a scanning electron microscope.It was found that the wear properties of SiO2-based MR fluids were better than that based on kaolin.The friction coefficient of MR fluid increased with the increase of SiO2 contents.The lowest wear scar diameter could be obtained when the weight percentage of SiO2 was 1%.The wear mechanism of methyl silicon oil-based MR fluids was three body abrasions,the thixotropies did not affect the wear patterns,but they could improve wear performance of the MR fluid.
The influence of the types and content of thixotropies on tribological properties of methyl silicon oil-based magnetorheological(MR) fluids were investigated on a four-ball tribological tester.The effect of thixotropy on friction coefficient and wear scar diameter was discussed.And the morphologies of the wear steel surfaces lubricated with MR fluids were observed by a scanning electron microscope.It was found that the wear properties of SiO2-based MR fluids were better than that based on kaolin.The friction coefficient of MR fluid increased with the increase of SiO2 contents.The lowest wear scar diameter could be obtained when the weight percentage of SiO2 was 1%.The wear mechanism of methyl silicon oil-based MR fluids was three body abrasions,the thixotropies did not affect the wear patterns,but they could improve wear performance of the MR fluid.
引文
[1]瞿伟廉,刘嘉,涂建维.[J].哈尔滨地震工程与工程振动,2007,27(2):124-130.
[2]中铁大桥局股份有限公司,武汉理工大学.武汉天兴洲公铁两用长江大桥关键技术研究之十七:MR智能阻尼器和流体阻尼器对天兴洲大桥纵向地震、列车制动和列车行走效应的混合控制[R].武汉:武汉理工大学,2007.
[3]涂建维.MR阻尼器的研究及其在升船机地震鞭梢效应上的应用[D].武汉:武汉理工大学,2003.
[4]瞿伟廉.[J].工程力学,2008,25(2):106-116.
[5]刘奇,唐龙,张平,等.[J].功能材料,2005,36(8):1192-1195.
[6]程海斌,张剑,冯军,等.[J].功能材料,2006,37(7):1166-1168.
[7]陈维清,杜成斌,万发学.[J].磁性材料及器件,2010,41(2):55-57.
[8]黄晶晶.油溶性球形纳米二氧化硅的制备与摩擦性能的研究[D].郑州:河南大学,2009.
[9]龚国芳.UHMWPE/Kaolin复合材料的摩擦磨损特性和机理研究[D].北京:中国矿业大学,2000.
[10]董俊修.润滑原理及润滑油(第2版)[M].北京:中国石化出版社,1998.120-121.
[2]中铁大桥局股份有限公司,武汉理工大学.武汉天兴洲公铁两用长江大桥关键技术研究之十七:MR智能阻尼器和流体阻尼器对天兴洲大桥纵向地震、列车制动和列车行走效应的混合控制[R].武汉:武汉理工大学,2007.
[3]涂建维.MR阻尼器的研究及其在升船机地震鞭梢效应上的应用[D].武汉:武汉理工大学,2003.
[4]瞿伟廉.[J].工程力学,2008,25(2):106-116.
[5]刘奇,唐龙,张平,等.[J].功能材料,2005,36(8):1192-1195.
[6]程海斌,张剑,冯军,等.[J].功能材料,2006,37(7):1166-1168.
[7]陈维清,杜成斌,万发学.[J].磁性材料及器件,2010,41(2):55-57.
[8]黄晶晶.油溶性球形纳米二氧化硅的制备与摩擦性能的研究[D].郑州:河南大学,2009.
[9]龚国芳.UHMWPE/Kaolin复合材料的摩擦磨损特性和机理研究[D].北京:中国矿业大学,2000.
[10]董俊修.润滑原理及润滑油(第2版)[M].北京:中国石化出版社,1998.120-121.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心