M50高温轴承钢表面TiN涂层与镀银层对磨的摩擦特性  

Tribological Properties of Ti N Coated M50 Steel for High Temperature Bearing Against Silver Coatings

作　　者：葛泉江[1] 张兴洪 马欣新[3] 陈雄刚 唐光泽[3] GE Quanjiang;ZHANG Xinghong;MA Xinxin;CHEN Xionggang;TANG guangze(Military Delegate Office of PLA Residing Harbin Bearing Group Corporation, Harbin 150036, China;AECC Harbin Bearing Group Corporation, Harbin 150025, China;School of Material Science & Engineering, Harbin Institute of Technology, Harbin 150001, China)

机构地区：[1]中国人民解放军驻哈尔滨轴承集团公司军事代表室,哈尔滨150036 [2]中国航发哈尔滨轴承集团公司,哈尔滨150025 [3]哈尔滨工业大学材料科学与工程学院,哈尔滨150001

出　　处：《航空制造技术》2017年第23期54-58,共5页Aeronautical Manufacturing Technology

基　　金：国家高技术研究发展计划项目(863项目)(2015AA034303);黑龙江省应用技术研究与开发计划(GX16A004)

摘　　要：以航空发动机主轴轴承引导面与保持架之间的异常磨损为背景,研究了M50钢及M50钢表面沉积Ti N涂层与保持架材料镀银层之间对磨时的摩擦特性,分析了干摩擦条件下相对滑动速度、接触应力及其交互作用对摩擦系数随时间变化的影响规律。采用SEM观察了摩擦表面的形貌,并用EDS对表面成分进行了分析。结果表明,摩擦系数随时间逐渐增大,存在明显的转变点;在低滑动速度和较低接触应力时,摩擦系数可以长时间维持在0.15~0.25较低水平,在较高滑动速度和较高接触应力时,摩擦系数很快上升到0.5左右,在试验选择的参数范围内,该转变时间与接触应力P和滑动速度V的乘积PV值基本上呈线性关系;高速大接触应力摩擦时,M50钢表面会受到硬质颗粒的作用产生划伤,而Ti N涂层对M50钢具有良好的防护作用,可以明显延缓高摩擦系数出现的时间,阻止M50钢中碳化物脱落,防止表面磨损。This work investigated the tribological properties of M50steel and TiN coated M50steel against silver coatings,based on the abnormal wear existing in aerospace engine bearing.The effect of relative sliding speed,contact stress as well as the interaction between the two parameters on friction coefficient with time were analyz.SEM and EDS were used to observe the surface morphology and the compositions of the worn traces.The results show that,friction coefficient increases with sliding time,and exists an abrupt change time.With lower sliding speed and lower contact stress,the friction coefficient keeps on0.15-0.25.However,with higher sliding speed and higher contract stress,the friction coefficient rises quickly and reaches about0.5.Within the range of parameters in this test,the change time has an approximate linear relationship with PV value,which is the product of contact stress P and sliding speed V.Sliding with high speed and high contact stress,the scratch will occur on the surface of M50steel by the large hard particles.TiN coating can obviously postpone the time of the high friction coefficient,and has the advantage to prevent the worn of M50steel due to impeding the peel off of the large carbides

关 键 词：高温轴承钢 TIN涂层 摩擦 

分 类 号：V231[航空宇航科学与技术—航空宇航推进理论与工程]