| 摘要: |
| 利用铁谱分析仪和扫描电镜对4个不同服役阶段润滑油中的磨粒含量（质量分数）、大小和形貌进行分析；用SRV摩擦磨损试验机对4个服役油样与新油进行摩擦学性能对比。结果表明：在不同服役阶段，磨粒的含量随着润滑油服役时间的增长而增大，粒径大小关系为异常磨损期>磨合磨损期>正常磨损期。与新油相比，4个油样的摩擦因数曲线有不同程度的波动，减摩性能下降明显，且减摩系数下降的幅度与所含磨粒粒径大小相关；磨粒使润滑油的抗磨性能下降，与新油的磨斑直径相比，4个油样的增幅分别达到20.0%、25.7%、45.7%、71.4%，且磨粒的粒径、含量与摩擦表面损伤程度成正相关，粒径主要影响磨痕宽度，含量主要影响磨痕密度。 |
| 关键词: 铁谱分析 服役润滑油 粒径 摩擦磨损 |
| DOI： |
| 分类号: |
| 基金项目:国家“973”计划(2011CB013405)；国家自然科学基金 (50904072，51005243) |
|
| Tribological Properties of Lubricant for Different Periods Effected by Wear Particles |
|
ZHANG Guan-nan, WANG Xiao-li, YIN Yan-li, CHEN Jiang, ZHAO Yi-qi1,2
|
|
1. Science and Technology on Remanufacturing Laboratory, Academy of Armored Forces Engineering, Beijing 100072;2. The PLA 66916 Troops, Gaobeidian 074000, Hebei
|
| Abstract: |
| The content, size and morphology of wear debris in four lubricants for different periods were analyzed by ferrograph analyzer and scanning electron microscopy (SEM). Compared with new oil, the tribological performances of the four lubricants were investigated by SRV. The results show that the content of wear debris is generally proportional to the working time. The granularity of wear particles was biggest in the abnormal wear period, medium in runningin wear period and smallest in normal wear period. The friction coefficient curves of four oil samples were more wavy than that of the new oil, while the antifriction performance was reduced obviously. The decrease of friction coefficient is relative with the granularity of wear particles. The wear debris reduces the antiwear performance of lubricants down. The wear scar diameters of four oil samples were increased by 20.0%, 25.7%, 45.7%, 71.4% higher than that of the new oil, respectively. The granularity and content is positively correlated with the damage level of friction surface on equipment, while the granularity affects the width of wear scar and the content affects the density. |
| Key words: ferrography served lubricating oil wear debris friction and wear |
