Effects of surface texturing and laminar plasma jet surface hardening on the tribological behaviors of GCr15 bearing steel
Effects of surface texturing and laminar plasma jet surface hardening on the tribological behaviors of GCr15 bearing steel
复制标题
表面织构和层流等离子射流表面硬化对GCr15轴承钢摩擦学行为的影响
DOI：
10.1016/j.triboint.2022.107465
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发表时间：
2022-02-14
影响因子：
6.2
通讯作者：
Yu, Deping
中科院分区：
文献类型：
--
作者：
Guo, Da;Zhang, Peng;Yu, Deping
为提高GCr 15轴承钢的耐磨性，对GCr 15轴承钢进行了表面毛化处理和层流等离子束表面强化处理。在干摩擦和油润滑条件下进行了球-盘往复摩擦磨损试验。通过SEM图像分析了摩擦界面的形貌和演变，揭示了其抗磨机理。结果表明，LPJ表面强化可显著降低GCr 15轴承钢的磨损，提高表面硬度，从而降低实际接触。ST能否改善GCr 15轴承钢的磨损主要取决于摩擦界面和磨损机制的演变，即应力集中与陷阱效应或动水压力效应在干摩擦或油润滑条件下的竞争关系。
Surface texturing (ST) and laminar plasma jet (LPJ) surface hardening were applied to GCr15 bearing steel to improve its wear resistance. Ball-on-disk reciprocating tests were then conducted under dry and oil-lubricated conditions to investigate the tribological behaviors. Morphology and evolution of the frictional interfaces were analyzed by SEM images to reveal the anti-wear mechanism. Results show that LPJ surface hardening can remarkably reduce the wear of GCr15 bearing steel by increasing surface hardness and thus decreasing the actual contact. Whether ST can improve the wear of GCr15 bearing steel mainly depends on the evolutions of frictional interface and wear mechanisms, namely the competitive relationship of stress concentration with trap effect or hydrodynamic pressure effect under dry friction or oil-lubricated condition.