Cr元素对Ni基无硼钎料钎焊金刚石的组织及性能影响  

Effect of Cr on microstructure and properties of brazed diamond with Ni-based boron free solder

作　　者：王朋波 石梦阳 张雷 纠永涛 程战 秦建 丁梓超 徐东 WANG Pengbo;SHI Mengyang;ZHANG Lei;JIU Yongtao;CHENG Zhan;QIN Jian;DING Zichao;XU Dong(School of Materials Science and Engineering,Anhui University of Technology,Ma'anshan 243002,Anhui,China;School of Materials Science and Engineering,Anhui Polytechnic University,Wuhu 241000,Anhui,China;China Innovation Academy of Intelligent Equipment Co.,Ltd.,Ningbo 315700,Zhejiang,China;State Key Laboratory of Advanced Brazing Filler Metals and Technology,Zhengzhou Research Institute of Mechanical Engineering Co.,Ltd.,Zhengzhou 450001,China)

机构地区：[1]安徽工业大学材料科学与工程学院,安徽马鞍山243002 [2]安徽工程大学材料科学与工程学院,安徽芜湖241000 [3]中机智能装备研究院(宁波)有限公司,浙江宁波315700 [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,郑州450001

出　　处：《金刚石与磨料磨具工程》2022年第4期421-427,共7页Diamond & Abrasives Engineering

基　　金：新型钎焊材料与技术国家重点实验室开放课题(SKLABFMT-201803);安徽省重点研究与开发计划(2022i01020008)。

摘　　要：针对B元素易使钎焊金刚石接头出现较多硬脆相的问题,制备一种新型Ni–Cr–Si–Cu–Sn无硼活性钎料,分析Cr元素对钎料组织和钎焊金刚石试样性能的影响规律。结果表明:Cr元素具有细化钎料晶粒和调控钎料中各元素分布的作用,可以提高钎料合金的显微硬度。当Cr元素质量分数过高时,会使钎料的熔点升高,钎料的润湿性能下降。综合来说,含有质量分数为15%的Cr的无硼钎料性能最佳,钎焊金刚石试样的磨削性能较优良,接头处出现多种形状的Cr_(7)C_(3)相,实现了钎料对金刚石的高强度连接。In view of the problem that B element is easy to cause more hard and brittle phases in brazed diamond joints,a new type of Ni–Cr–Si–Cu–Sn boron free active solder was prepared,and the effects of Cr element on the microstructure of solder and the properties of brazed diamond were analyzed.The results show that Cr element can refine the solder grain and regulate the distribution of elements in the solder,which can improve the microhardness of the solder alloy.Excessive Cr addition will cause the melting point of the solder to increase and the wettability of the solder to de-crease.In general,the boron free solder containing 15%Cr has the best performance,the grinding performance of brazed diamond is better,and Cr_(7)C_(3) phases of various shapes appear at the joint,realizing the high-strength connection of the solder to the diamond.

关 键 词：钎焊 金刚石 新型Ni基无硼钎料 活性元素 力学性能 

分 类 号：TQ164[化学工程—高温制品工业] TG74[金属学及工艺—刀具与模具] TG401