锆合金表面激光渗碳层耐磨性能研究  

Study on Wear Resistance of Zirconium Alloy by Laser Surface Carburizing

作　　者：史新灵 陈志勇[2] 刘晋京 宋妮妮 朱卫华[2,3] 朱红梅 王新林[1,3] SHI Xin-ling;CHEN Zhi-yong;LIU Jin-jing;SONG Ni-ni;ZHU Wei-hua;ZHU Hong-mei;WANG Xin-lin(School of Mechanical Engineering,University of South China,Hengyang Hunan 421001,China;School of Electrical Engineering,University of South China,Hengyang Hunan 421001,China;Hunan Provincial Key Laboratory of Ultra-fast Micro-Nano Technology and Advanced Laser Manufacturing,Hengyang Hunan 421001,China)

机构地区：[1]南华大学机械工程学院,湖南衡阳421001 [2]南华大学电气工程学院,湖南衡阳421001 [3]超快微纳技术与激光先进制造湖南省重点实验室,湖南衡阳421001

出　　处：《装备制造技术》2020年第12期256-258,共3页Equipment Manufacturing Technology

摘　　要：通过激光渗碳方法在锆合金表面制备出含有碳化物和氧化物的复合涂层,以此改善其耐磨性。对渗碳后试样的显微组织形貌、表面物相成分、耐磨性进行观测与分析。结果表明,对锆基材进行激光渗碳后,其表面出现ZrC、ZrC0.7、ZrO2等化合物,且激光渗碳试样具有比基材更小的摩擦系数,耐磨性能提高。相比于基材,激光渗碳后试样的磨损质量及摩擦系数均明显减少,其磨损机制主要为磨粒磨损,并伴有少量的粘着磨损。In order to improve the wear resistance of zirconium alloys,a composite coating containing carbides and oxides was prepared on the surface of zirconium alloys by laser carburizing.The microstructure,phase composition and wear resistance of the carburized samples were observed and analyzed.The results show that ZrC,ZrC0.7,ZrO2 and other compounds appear on the surface of zirconium substrate after laser carburizing.The laser carburizing sample has a smaller friction coefficient than the substrate,and the wear resistance is improved.Compared with the substrate,the wear mass and friction coefficient of the sample after laser carburizing are significantly reduced,and the wear mechanism is mainly abrasive wear with a small amount of adhesive wear.

关 键 词：激光渗碳 锆合金 耐磨性 

分 类 号：TG178[金属学及工艺—金属表面处理]