| 摘要: |
| 为替代磷化-皂化处理工艺，通过浸涂高分子复合润滑液的方法在低碳钢试样表面制备涂层。利用HT-500型球盘摩擦试验机考察了低碳钢在高分子复合润滑涂层、磷皂化膜、无润滑介质这3种不同润滑条件下摩擦学性能，同时分析了干摩擦接触表面上摩擦切应力，并应用VHX-600K型超景深显微镜对磨损表面形貌观察，探讨磨损机制。结果表明：高分子复合润滑涂层与磷皂化膜具有相接近的润滑减摩特性，摩擦因数与干摩擦相比分别减小67.33%和68.79%，对摩初期5 min内前者略低2.1%，且减摩性能都较稳定。此外，磨损机制与不同润滑条件下的摩擦行为有关。干摩擦过程中，磨粒磨损、氧化磨损起主导作用；表面有磷皂化膜的摩擦磨损机制主要为轻微磨粒磨损与少量氧化磨损；高分子复合润滑涂层作用下，表面磨损程度最小，主要表现为轻微磨粒磨损。 |
| 关键词: 高分子复合润滑涂层 摩擦切应力 磨损表面形貌 摩擦因数 磨损机制 |
| DOI：10.11933/j.issn.1007-9289.20180802002 |
| 分类号:TG174.46 |
| 基金项目:上海工程技术大学研究生创新项目（17KY0501）；校企产学合作项目（（17）CL-003） |
|
| Effects of Polymer Composited Lubricant Coating on Tribological Properties of Low-carbon Steel Surface |
|
MIAO Jun1, GONG Hongying1, JIANG Tianliang1, QIAN Yong1, LIAO Zehuan2, XU Zhiming2
|
|
1.School of Materials Engineering, Shanghai University of Engineering Science, Shanghai 201620, China;2.Shanghai Dongfogel Cold Forging Co., Ltd., Shanghai 201821, China
|
| Abstract: |
| To replace the surface treatment process by phosphating and saponification, a coating was prepared on the surface of low carbon steel sample by dipping method using water-based polymer mixed lubricant. Using HT500 ball-disk wear tester, tribological behaviors of low-carbon steel were investigated under three different lubricating conditions such as polymer mixed lubricant coating, film by Phosphating and saponification, and non-lubricants. Friction shear stress on the dry friction contact surface was also analyzed. The morphology of the worn surface was observed by VHX-600K super depth of focus microscope, and the wear mechanism was studied. The results show that the polymer mixed lubricant coating has the effect of lubricating and antifriction which is similar to film by phosphating and saponification. Compared with the dry friction, the friction coefficient decreases by 67.33% and 68.79%, respectively, the former is slightly lower by 2.1% within 5 min of the initial friction, and the antifriction performance of both are steady relatively in the test. Additionally, friction and wear mechanism is related to friction behaviors under different lubricating conditions. In the dry friction process, the abrasive wear and oxidation wear play the leading role, and the wear mechanism of film by phosphating and saponification on the metal surface is slight abrasive wear and little oxidation wear, and the surface wear is the lightest under the polymer mixed lubricant coating while the wear mechanism is mainly slight abrasive wear. |
| Key words: polymer mixed lubricant coating friction shear stress worn surface morphology friction coefficient wear mechanism |
