Effect of Surface Topography on ZDDP Tribofilm Formation During Running-in Stage Subject to Boundary Lubrication
Effect of Surface Topography on ZDDP Tribofilm Formation During Running-in Stage Subject to Boundary Lubrication
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DOI：
10.1007/s11249-021-01552-5
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发表时间：
2021-12
影响因子：
3.2
通讯作者：
Linqing Bai;Y. Meng;Varian Zhang;Z. Khan
中科院分区：
文献类型：
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作者：
Linqing Bai;Y. Meng;Varian Zhang;Z. Khan
在边界润滑条件下，研究了磨合阶段表面形貌对二烷基二硫代磷酸锌化学摩擦膜形成的影响。目前的工作范围有限，主要集中在边界润滑下的往复运动来模拟活塞环运动的上、下死点，这是容易发生粘着磨损失效的。设计并制作了几种表面形貌来测量、比较摩擦系数和ZDDP形成摩擦膜的临界时间。用扫描电子显微镜和能谱分析对摩擦表面及其相应的摩擦膜进行了表征。讨论了表面形貌对ZDDP摩擦膜形成临界时间的影响机理。研究结果表明，表面形貌对ZDDP在磨合过程中形成摩擦膜的临界时间及相应的磨损性能有显著影响。这一研究为提高边界润滑条件下的抗磨性能提供了机会。这可以通过优化表面形貌设计来影响磨合阶段抗磨摩擦膜的形成来实现。反过来，这将导致交互组件的使用寿命延长，并通过减轻磨损显著节省成本。
Experimental investigations have been conducted to study the effects of surface topography on ZDDP (zinc dialkyldithiophosphate) chemical tribofilm formation during running-in stage under boundary lubrication conditions. The scope of presented work has been limited and focused on reciprocating motion under boundary lubrication to simulate the upper and lower dead centre of piston ring movement, which is prone to adhesive wear failure. Several surface topographies were designed and fabricated to measure, compare coefficient of friction and ZDDP critical time of tribofilm formation. Rubbing surfaces and their corresponding tribofilms were characterized by SEM and EDX. Mechanisms of surface topography effects on the critical time of ZDDP tribofilm formation is presented and discussed. Results from this study have demonstrated that the surface topography has a significant influence on the critical time of ZDDP tribofilm formation during running-in process and corresponding wear performance. This research provides an opportunity to augment anti-wear performance under boundary lubrication condition. This can be achieved by optimizing surface morphology design to influence the formation of anti-wear tribofilms during the running-in stage. In turn, this will result in interacting component’s service life enhancement and significant cost savings from mitigated wear.