锆合金表面多弧离子镀-激光微熔复合技术制备NiCr涂层的研究  

Research on Preparation of NiCr Coating by Multi-arc Ion Plating and Laser Micromelting on Zirconium Alloy

作　　者：金圆圆 宁周财 陈海洋 卜长政 宋思远 JIN Yuanyuan;NING Zhoucai;CHEN Haiyang;BU Changzheng;SONG Siyuan(School of Mechanical Engineering,University of South China,Hengyang 421001,China)

机构地区：[1]南华大学机械工程学院,湖南衡阳421001

出　　处：《机械工程师》2023年第6期17-18,22,共3页Mechanical Engineer

基　　金：大学生创新创业训练计划项目(X202110555422;X202210555011)。

摘　　要：目前,锆合金表面制备涂层是保证核电设备安全运行的有效手段之一。为了提高锆合金的综合性能,采用多弧离子镀(MAIP)-激光微熔复合技术在锆合金表面制备NiCr涂层,研究激光微熔过程中激光功率对涂层表面形貌和性能的影响。结果表明:利用多弧离子镀技术对锆合金表面镀膜,经激光微熔后,锆合金表面涂层由机械结合向冶金结合转变;提高了涂层与基材的结合强度。随着激光功率的增大,锆合金表面涂层的冶金结合区越大,激光微熔后的锆合金表面涂层硬度增大。Zirconium alloy surface coating is an important technical approach in the research of accident resistant fuel.In order to improve the comprehensive properties of zirconium alloy,NiCr coating is prepared on the surface of zirconium alloy by multi-arc ion plating(MAIP)and laser micromelting.The effects of laser power on the surface morphology and properties of the coating during laser micromelting are studied.The results show that the surface coating of zirconium alloy is transformed from mechanical bonding to metallurgical bonding by multi-arc ion plating.With the increase of laser power,the greater the metallurgical bonding zone of the zirconium alloy surface coating,the greater the hardness of the zirconium alloy surface coating after laser micro-melting.

关 键 词：多弧离子镀 激光微熔 激光功率 硬度 

分 类 号：TG178[金属学及工艺—金属表面处理]