用共混法制备1∶1的坡缕石/铜复合纳米粉体,经表面修饰后按质量比2%添加到150N基础油中,制备出含复合纳米材料添加剂的润滑油体系。用MMU-10G摩擦磨损试验机测试该润滑油添加剂对HT200对磨试样的摩擦学性能,并用高精度电子天平测定试件的失重量以评定其耐磨性能。用扫描电镜SEM、EDX等分析了摩擦磨损试验后表面成分与形貌的变化,并分析了摩擦学性能变化的机理。结果表明：制备的坡缕石/铜复合纳米粉体在基础油中分散性良好,颗粒大小不超过200nm,能明显提高摩擦副的减摩抗磨性能,平均摩擦因数下降19.1%,总磨损量下降44%,试件表面生成了含坡缕石特征元素和铜元素的自修复膜层,这是纳米坡缕石和纳米铜粒子共同作用的结果。
Palygorskite/copper nanocomposites（P/Cu） were prepared by mechanical stirring.The lubricating oils containing 2wt% of nanocomposites were prepared.The tribological behaviors of P/Cu were observed on the MMU-10G abrasive-wear tester.To characterize the wear loss with time,the tribological samples were weighed with a high precision electronic balance.To understand the effect of P/Cu additives,transmission electron microscopy（TEM）,scanning electron microscope（SEM） and energy dispersive X-ray（EDX） spectroscopy were used.Experimental results show that the P/Cu have fine dispersing and their particles size is less than 200nm.The P/Cu show significant anti-wear and certain friction-reduction performance.The average friction coefficient of P/Cu decreases about 19.1% and the wear volume loss decreases about 44% compared with 150N base oil.Characteristic elements of palygorskite and copper are found in the self-repairing film,which are the interaction results of nano-palygorskite and nano-copper.
参考文献
| [1] | 周元康,张大斌,曾立宏,王满力.坡缕石纳米/酚醛树脂的制备及其摩擦材料的性能[J].润滑与密封,2008(04):47-50. |
| [2] | SHI PJ;XU Y;YU H L.Micromechanical and tribologieal properties of auto-reconditioning film in situ generated in presence of inorganic mineral powder on worn surface[A].Taiyuan China:Chinese Heat Treatment Society,2005:465-468. |
| [3] | JIN Y S;LI S H;ZHANG Z Y et al.In situ mechanochemieal reconditioning of worn ferrous surfaces[J].Tribology International,2004,37(07):561-567. |
| [4] | 张博,徐滨士,许一,王晓丽,张保森.羟基硅酸镁对球墨铸铁摩擦副耐磨性能的影响及自修复作用[J].硅酸盐学报,2009(04):492-496. |
| [5] | Yang Yu;Jialin Gu;Feiyu Kang;Xianqing Kong;Wei Mo .Surface restoration induced by lubricant additive of natural minerals[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2007(18):7549-7553. |
| [6] | 郭廷宝;徐滨士;马士宁 等.羟基硅酸盐润滑油添加剂对45钢/球磨铸铁摩擦副摩擦磨损性能的影响[J].摩擦学学报,2004,24(06):512-515. |
| [7] | 田斌,王成彪,岳文,马向东,郭凤炜,刘家浚.陶瓷润滑油添加剂对镀铬缸套磨损自修复特性的影响[J].摩擦学学报,2006(06):574-579. |
| [8] | 王晓丽,徐滨士,许一,史佩京,于鹤龙.纳米铜润滑油添加剂的摩擦磨损特性及其机理研究[J].摩擦学学报,2007(03):235-240. |
| [9] | 张明,王晓波,伏喜胜,刘维民.油溶性纳米Cu在微动磨损条件下的自修复行为与机理研究[J].摩擦学学报,2005(06):504-509. |
| [10] | 周元康,郑忠恒,李屹,李荣,王满力.贵州坡缕石矿物纳米的干式制备及其在酚醛树脂中的分散状态表征[J].贵州工业大学学报（自然科学版）,2006(06):5-9. |
| [11] | 杨绿,周元康,李屹,朱湘宁,张勇杰.纳米坡缕石润滑油添加剂对灰铸铁HT200摩擦磨损性能的影响[J].材料工程,2010(04):94-98. |
| [12] | 乔玉林.纳米微粒的润滑与自修复技术[M].北京:国防工业出版社,2005:220-328. |
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