温度对炮钢表面镀铬层摩擦磨损性能的影响  

Influence of Temperature on Friction and Wear Performance of Chromium-plated Coating on Gun Steel

作　　者：郭策安[1] 蒋鑫 冯小亮 丁羽波 GUO Cean;JIANG Xin;FENG Xiaoliang;DING Yubo(College of Equipment Engineering,Shenyang Ligong University,Shenyang 110159,China)

机构地区：[1]沈阳理工大学装备工程学院,辽宁沈阳110159

出　　处：《热加工工艺》2023年第22期11-14,共4页Hot Working Technology

基　　金：辽宁省自然科学基金资助项目(2019-ZD-0264)。

摘　　要：研究了炮钢表面镀铬层在不同温度下的摩擦磨损行为,为揭示镀铬火炮身管的磨损机理提供理论参考。在炮钢基体表面电镀铬涂层,用高速往复摩擦磨损试验机和高精度电子天平分别获得了镀铬层在不同温度下的摩擦系数和磨损量。用扫描电镜(SEM)、能谱仪(EDS)分析了该镀铬层磨损前后的微观结构。结果表明:随着温度从室温升至300℃,镀铬层的平均摩擦系数呈下降趋势,而磨损量先下降后上升;镀铬层在各个温度的主要磨损机制存在明显不同,即分别为粘着磨损(室温)、剥层磨损(100℃),氧化磨损和粘着磨损(200℃),氧化磨损和磨粒磨损(300℃)。The friction and wear behavior of chromium coating on gun steel at different temperatures was investigated in order to provide a theoretical reference for the revelation of wear mechanism of chromium-plated gun barrels.The chromium coating was electroplated on Cr Ni3MoVA steel substrate,and then the high-speed reciprocating friction and wear tester and high precision electronic balance were employed to obtain the friction coefficient and wear mass of the chromium coating at different temperatures,respectively,and finally the scanning electron microscope(SEM),energy spectrum(EDS)were utilized to analyze the microstructure of the chromium coating before and after wear.The results show that the mean friction coefficient of the chromium coating shows a reducing tendency whilst its wear mass firstly reduces,and then increases as the temperature increases from room temperature to 300℃;there are obvious differences in main wear mechanism at different temperatures,namely respectively,adherent wear(room temperature),peeling wear(100℃),oxidization and adherent wear(200℃),and oxidization and abrasion wear(300℃).

关 键 词：炮钢 电镀铬涂层 温度 摩擦磨损 

分 类 号：TG174.4[金属学及工艺—金属表面处理]