摘要
为了研究纺织钢领用类金刚石涂层(DLC)的高温摩擦性能,采用低温PVD涂层技术在高碳钢表面沉积制备DLC涂层。借助扫描电镜观察DLC涂层的表面形貌;通过X射线光电子能谱仪测试、能谱仪和拉曼光谱仪分析DLC涂层的结构成分;使用划痕试验机测试涂层的力学性能。利用高温摩擦磨损试验机测试涂层在不同温度下的摩擦性能。结果表明:GCr15试样与钢球配副的平均摩擦系数随着温度的升高而增大,最大值达到0.88。其中,钢球配副的磨损体积呈现出相同的变化趋势,最大磨损体积为2.88×10^(−3)mm^(3)。沉积DLC涂层之后,摩擦副的平均摩擦系数表现出先增大后降低的趋势。当测试温度为25℃时,涂层试样平均摩擦系数为0.033,且钢球磨损体积最低达到3.87×10^(−6)mm^(3);测试温度上升至100℃时,平均摩擦系数值增大至0.212;随着测试温度进一步升高,平均摩擦系数降低至0.088。未沉积涂层的试样在摩擦过程中产生的高温使得界面形成大量氧化物颗粒,加剧磨损程度;而涂层试样在测试温度高于涂层石墨化程度时,涂层摩擦界面产生石墨化转变并形成以碳元素为主的转移层,发挥固体润滑介质的作用,最终导致摩擦系数降低。
In order to study the high temperature friction property of diamond-like coating(DLC)for textile steel,the low temperature PVD coating technology was used to prepare DLC on high carbon steel surface.The surface morphology of DLC coating was observed by SEM.The structure composition of DLC coating was analyzed by X-ray Photoelectron Spectrometer Test and Energy Spectrometer and Raman spectrometer.The mechanical properties of the coating were tested using a scratch tester.High temperature friction and wear testing machine was used to test the friction properties of the coating at different temperatures.The results show that the average friction coefficient between GCr15 sample and steel ball mating pair increases with the increase of temperature,and the maximum is 0.88.The wear volume of steel ball pairs showed the same variation trend,and the maximum wear volume was 2.88×10^(−3)mm^(3).After deposition of DLC coating,the average friction coefficient of friction pair increases first and then decreases.The average friction coefficient of coating samples at 25℃is the lowest 0.033,and the ball wear volume is the lowest(3.87×10^(−6)mm^(3)).When the test temperature rises to 100℃,the average friction coefficient value increases to 0.212.When the test temperature increased further,the average friction coefficient decreased to 0.088.Conclusion:The high temperature generated in the friction process of the samples without coating leads to the formation of a large number of oxidation particles at the interface,which intensifies the wear degree.However,when the test temperature of the coating sample is higher than the graphitization degree of the coating,the coating will graphitize and form a transfer layer dominated by carbon elements,which plays the role of solid lubricating medium and ultimately leads to the reduction of the friction coefficient.
作者
苏慧明
郭飞飞
李本寅
程启增
王珂心
SU Huiming;GUO Feifei;LI Benyin;CHENG Qizeng;WANG Kexin(College of Mechanical and Electrical Engineering,Xi’an Polytechnic University,Xi’an 710049,China)
出处
《真空科学与技术学报》
CAS
CSCD
北大核心
2024年第1期94-100,共7页
Chinese Journal of Vacuum Science and Technology
基金
陕西省科技厅项目(2022JQ-526)
陕西省教育厅基础研究项目(21JK0659)
西安工程大学研究生创新基金项目(chx2022005)
中国纺织工业联合会科技指导项目(2021070)
陕西省秦创原“科学家+工程师”队伍项目(2023KXJ-129)。
关键词
纺织钢领
类金刚石涂层
高温摩擦
转移层
Textile steelcollar
Diamond-like coating
High temperature friction
Transfer layer
