添加ZrC增强相的Cu-Sn-Ti钎料真空钎焊金刚石的微观结构和磨削性能的研究

doi:10.3901/JME.2021.18.182

机械工程学报 ›› 2021, Vol. 57 ›› Issue (18): 182-189.doi: 10.3901/JME.2021.18.182

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添加ZrC增强相的Cu-Sn-Ti钎料真空钎焊金刚石的微观结构和磨削性能的研究

尹孝辉^1,2, 徐凡^1,2, 徐东^1,2, 丁建祥^1,2, 陈继^1,2, 丁梓超^1,2, 崔冰^1,2

1. 安徽工业大学材料科学与工程学院马鞍山 243002;
2. 安徽工业大学先进金属材料绿色制备与表面技术教育部重点实验室马鞍山 243002

收稿日期:2020-11-02 修回日期:2021-03-01 出版日期:2021-09-20 发布日期:2021-11-30
通讯作者: 崔冰(通信作者),女,1987年出生,博士,讲师,硕士研究生导师,主要研究方向为高性能复合材料的研发与制备。E-mail:brazingcb@163.com
作者简介:尹孝辉,男,1975年出生,副教授,硕士研究生导师。主要研究方向为高性能钢铁材料焊接、新材料以及异种材料连接。E-mail:xhyin@ahut.edu.cn

Research on Microstructure and Grinding Performance of Vacuum Brazed Diamond with ZrC Reinforced Cu-Sn-Ti Composite Alloys

YIN Xiaohui^1,2, XU Fan^1,2, XU Dong^1,2, DING Jianxiang^1,2, CHEN Ji^1,2, DING Zichao^1,2, CUI Bing^1,2

1. College of Material Science and Engineering, Anhui University of Technology Ma'anshan 243002;
2. Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials, Ministry of Education, Anhui University of Technology, Ma'anshan 243002

Received:2020-11-02 Revised:2021-03-01 Online:2021-09-20 Published:2021-11-30

摘要/Abstract

摘要： 采用Cu-Sn-Ti-xZrC增强相复合钎料钎焊金刚石/45钢，实现其高强度连接。用扫描电镜，能谱仪、X射线衍射仪对真空钎焊后的金刚石和钎料界面层的宏观形貌和微观组织进行分析，同时通过维氏硬度计和磨擦磨损试验机对钎焊后金刚石的力学性能进行表征。结果表明：添加15wt.% ZrC的Cu-Sn-Ti钎料真空钎焊金刚石结合界面钎料铺展较均匀，金刚石的出露度较高，并且未出现明显裂纹等缺陷；金刚石表面有碳化物和少量的金属间化合物生成；随着ZrC含量的增加，界面处的硬度逐渐提高，且界面处的硬度高于基体和钎料层部分；添加15wt.% ZrC的钎焊接头磨损试验后的摩擦因数、磨削阻力及金刚石掉落率相对其他成分的较低，且被磨件的被去除量更大，这表明添加15wt.% ZrC的钎焊金刚石接头具有最佳的性能。

关键词: ZrC增强相, 钎焊, 金刚石, 碳化物, 硬度, 摩擦因数, 去除量

Abstract: The Cu-Sn-Ti-xZrC reinforced phase composite filler metals were utilized to braze diamond/45# steel for achieving its high-strength connection. Using a scanning electron microscope, energy spectrometer, X-ray diffractometer to analyze the macro-morphology and the microstructure of the interfacial layer after vacuum brazing. At the same time, the Vickers hardness tester and friction wear tester are used to characterize the mechanical properties of the diamond. It shows that the Cu-Sn-Ti filler alloys with 15wt.% ZrC particles spread uniformly, and diamond particles exposure highly. There are no obvious defects such as cracks; meanwhile, diamond surfaces generate major carbides and a few intermetallic compounds. In short, with the increase of ZrC reinforcing particles, the microhardness of the joints gradually increases, and the microhardness at the interface is higher than that of the matrix and the filler layer。The friction coefficient, grinding resistance and drop rate of the abrasive particles are lower than those of other components; the wearing loss reach the high values, which proves that the brazed diamond joints with 15wt.% ZrC reinforcing particles have the best comprehensive performance.

Key words: ZrC reinforced phase, brazing, diamond, carbides, microhardness, friction coefficient, wearing loss

中图分类号:

TG454

尹孝辉, 徐凡, 徐东, 丁建祥, 陈继, 丁梓超, 崔冰. 添加ZrC增强相的Cu-Sn-Ti钎料真空钎焊金刚石的微观结构和磨削性能的研究[J]. 机械工程学报, 2021, 57(18): 182-189.

YIN Xiaohui, XU Fan, XU Dong, DING Jianxiang, CHEN Ji, DING Zichao, CUI Bing. Research on Microstructure and Grinding Performance of Vacuum Brazed Diamond with ZrC Reinforced Cu-Sn-Ti Composite Alloys[J]. Journal of Mechanical Engineering, 2021, 57(18): 182-189.

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添加ZrC增强相的Cu-Sn-Ti钎料真空钎焊金刚石的微观结构和磨削性能的研究

Research on Microstructure and Grinding Performance of Vacuum Brazed Diamond with ZrC Reinforced Cu-Sn-Ti Composite Alloys

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