刘永琪,袁成清,饶响,郭智威.基于激光熔覆的缸套表面梯度材料制备及其摩擦学性能研究[J].表面技术,2024,53(7):40-47.
LIU Yongqi,YUAN Chengqing,RAO Xiang,GUO Zhiwei.Preparation and Tribological Properties of Gradient Material on Cylinder Liner Surface by Laser Cladding[J].Surface Technology,2024,53(7):40-47 |
| 基于激光熔覆的缸套表面梯度材料制备及其摩擦学性能研究 |
| Preparation and Tribological Properties of Gradient Material on Cylinder Liner Surface by Laser Cladding |
| 投稿时间：2023-04-13 修订日期：2023-09-14 |
| DOI：10.16490/j.cnki.issn.1001-3660.2024.07.004 |
| 中文关键词: 功能梯度材料 缸套-活塞环 激光熔覆 摩擦特性 金相组织 |
| 英文关键词:functional gradient materials cylinder liner-piston ring laser cladding friction characteristics metallographic microstructure |
| 基金项目:国家自然科学基金(52372361) |
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| Author | Institution |
| LIU Yongqi | School of Transportation and Logistics Engineering,State Key Laboratory of Maritime Technology and Safety, Wuhan University of Technology, Wuhan 430063, China;Reliability Engineering Institute, National Engineering Research Center for Water Transportation Safety, Wuhan 430063, China |
| YUAN Chengqing | School of Transportation and Logistics Engineering,State Key Laboratory of Maritime Technology and Safety, Wuhan University of Technology, Wuhan 430063, China;Reliability Engineering Institute, National Engineering Research Center for Water Transportation Safety, Wuhan 430063, China |
| RAO Xiang | Reliability Engineering Institute, National Engineering Research Center for Water Transportation Safety, Wuhan 430063, China |
| GUO Zhiwei | School of Transportation and Logistics Engineering,State Key Laboratory of Maritime Technology and Safety, Wuhan University of Technology, Wuhan 430063, China;Reliability Engineering Institute, National Engineering Research Center for Water Transportation Safety, Wuhan 430063, China |
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| 中文摘要: |
| 目的 研究功能梯度材料对缸套表面的抗磨减摩作用，提升缸套-活塞环配副的摩擦学性能。方法 通过激光打标机在缸套表面制备具有30°角规则纹理排布的凹槽，在凹槽内采用同轴送粉的方式熔覆镍含量不同的铁基粉末，分析熔覆合金层的金相组织，并利用往复式摩擦磨损试验机研究在一定载荷压力下功能梯度材料缸套的摩擦学性能。结果 熔覆层金相组织呈现梯度排布，熔覆层与基体材料分子原子交互扩散形成良好的冶金结合。牌号为350、镍质量分数为4.2%、铁质量分数80%的粉末所制备的功能梯度材料，减摩效果最为明显，相比未经处理的对照组，平均摩擦因数降幅为25.4%，且该组在试验中接触电阻的平均值最大，相比对照组提升了63.45%。牌号为330、镍质量分数为9%、铁质量分数为70%的粉末制备的缸套，表面支撑指数最高为0.78，相比于未处理的对照组，增幅达到35%，且试验组活塞环经摩擦后，磨损量均小于对照组。结论 制备了30°角分布的功能梯度材料，能使得缸套-活塞环摩擦学系统在工作过程中摩擦副的润滑油膜厚度更厚，且在运行过程中更稳定，以减少摩擦力和降低摩擦因数。同时，增强其支撑能力和储存润滑油的能力，使所制备的缸套摩擦因数显著降低。牌号为350的材料，改善摩擦学性能的效果最优。 |
| 英文摘要: |
| As a new type of material whose performance changes with composition or structure, functional gradient materials are increasingly being applied to improve the tribological properties of mechanical components. In order to study the anti-wear and friction reduction effect of functional gradient materials on the surface of cylinder liners, a regular texture arrangement with a 30° angle was prepared on the surface of cylinder liners to explore the coupling effect of material and texture on the improvement of tribological properties. |
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