Zhang Siwan*,Zhang Congzheng.Wear resistance of manganese composite phosphating film prepared on Q390E steel in medium and high temperature environment[J].Plating & Finishing,2025,(04):26-32.
doi: 10.3969/j.issn.1001-3849.2025.04.005Q390E钢表面锰系复合磷化膜在中高温环境中的耐磨性能
- Title:
- Wear resistance of manganese composite phosphating film prepared on Q390E steel in medium and high temperature environment
- Keywords:
- manganese composite phosphating film; polytetrafluoroethylene particles; Q390E steel; wear resistance; medium and high temperature environment
- 分类号:
- TQ153
- 文献标志码:
- A
- 摘要:
- 采用浸渍法在Q390E钢表面制备掺杂自润滑聚四氟乙烯颗粒的锰系复合磷化膜，并借助扫描电镜、摩擦磨损试验机和超景深三维显微系统研究锰系复合磷化膜在中高温环境中的耐磨性能。结果表明：锰系复合磷化膜完全覆盖Q390E钢且具有良好致密性，其晶粒表面及晶粒间隙处附着和填充许多PTFE颗粒。随着环境温度从150 ℃升至300 ℃，锰系复合磷化膜表面磨损程度加重，平均摩擦系数从0.50增至0.55，磨痕开口处宽度从210 μm增至390 μm，磨痕最大深度从4.2 μm增至6.9 μm，磨痕截面面积相应的从415 μm2增至1 340 μm2。但处在相同环境中，锰系复合磷化膜的耐磨性能明显好于Q390E钢。锰系复合磷化膜中掺杂许多PTFE颗粒呈分散状态，PTFE颗粒转移到摩擦界面能有效发挥减摩作用，减轻锰系复合磷化膜表面磨损程度，因而锰系复合磷化膜在中高温环境中表现出良好的耐磨性能。
- Abstract:
- The manganese composite phosphating film doped with self-lubricating polytetrafluoroethylene particles was prepared on the surface of Q390E steel by dipping method, and the wear resistance of manganese composite phosphating film in medium and high temperature environment was studied by means of scanning electron microscopy, friction and wear testing machine and digital microscopy. The results show that the manganese composite phosphating film covers Q390E steel completely and has good compactness, and many PTFE particles are attached on the grain surface and fill the grain gaps. As the ambient temperature rises from 150 to 300 ℃, the surface wear of manganese composite phosphating film is aggravated and the average friction coefficient increases from 0.50 to 0.55. Besides, the opening width of the wear mark increases from 210 to 390 μm; the maximum depth of the wear mark increases from 4.2 to 6.9 μm and the cross-section area of the wear mark increases from 415 to 1 340 μm 2 correspondingly. However, the wear resistance of manganese composite phosphating film is obviously better than that of Q390E steel in the same environment. Many PTFE particles are doped in manganese composite phosphating film in dispersed state, and the transfer of PTFE particles to the friction interface can effectively play the anti-friction role and reduce the wear degree of manganese composite phosphating film, so the manganese composite phosphating film shows good wear resistance in middle and high temperature environment.
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