激光重熔对金刚石/镍基复合涂层组织性能的影响  

Effect of Laser Remelting on Microstructure and Properties of Diamond/Ni-Based Composite Coatings

作　　者：吴奇隆 赵宏伟[2] 张雷 孙志鹏 李宇佳 程战 袁世成 Wu Qilong;ZhaoHongwei;Zhang Lei;Sun Zhipeng;Li Yujia;Cheng Zhan;Yuan Shicheng(Ningbo Intelligent Machine Tool Research Institute Co.,Ltd.of China National Machinery Institute Group,Ningbo 315700,China;School of Mechanical and Aerospace Engineering,Jilin University,Changchun 130025,China;Ningbo Zhongji Songlan Cutting Tool Technology Co.,Ltd,Ningbo 315000,China;State Key Laboratory of Advanced Brazing Filler Metals and Technology,Zhengzhou Research Institute of Mechanical Engineering,Zhengzhou 450001,China)

机构地区：[1]中国机械总院集团宁波智能机床研究院有限公司,浙江宁波315700 [2]吉林大学机械与航空航天学院,吉林长春130025 [3]宁波中机松兰刀具科技有限公司,浙江宁波315000 [4]郑州机械研究所有限公司新型钎焊材料与技术国家重点实验室,河南郑州450001

出　　处：《稀有金属材料与工程》2025年第2期437-444,共8页Rare Metal Materials and Engineering

基　　金：浙江省“尖兵”“领雁”研发攻关计划(2024C01086);宁波市“3315”人才计划2020创新团队C类。

摘　　要：为了研究激光重熔对金刚石/镍基复合涂层组织性能的影响,采用感应加热的方式在Q235表面制备金刚石/镍基复合涂层后进行激光重熔。利用超景深显微镜、激光共聚焦显微镜、扫描电镜、能谱仪、X射线衍射仪、硬度计和磨粒磨损试验机对激光重熔前后涂层的表面形貌、显微组织、元素分布和机械性能进行了分析对比。结果表明,经激光重熔后表面裸露金刚石数量减少,复合涂层表面平均粗糙度由5.58μm下降至4.88μm;微观组织中孔洞缺陷数量显著减少,显微组织中的碳化物聚集长大,同时Cr元素在金刚石周围富集程度增加;钎料合金显微硬度与涂层耐磨性能无明显变化。To investigate the effect of laser remelting on the microstructure and properties of diamond/Ni-based composite coatings,diamond/Nibased composite coatings were prepared on the surface of Q235 by induction heating.The macroscopic morphology,microstructure,elemental distribution and mechanical properties of the coatings before and after laser remelting were analyzed by ultra-deep field microscope,laser confocal microscope,scanning electron microscope,energy spectrometer,X-ray diffractometer,hardness tester and abrasive wear tester.The results show that after laser remelting,the number of exposed diamonds on the surface decreases and the average roughness of the surface of the composite coating decreases from 5.58μm to 4.88μm.The number of hole defects in the microstructure is significantly reduced,and the carbide in the microstructure aggregates and grows up,while the enrichment degree of Cr element increases around the diamond;there is no significant change in the microhardness of the brazing alloy and the abrasion-resistant properties of the coating.

关 键 词：激光 感应 钎涂 金刚石 镍基涂层 

分 类 号：TG156[金属学及工艺—热处理]