Study on properties of AgCuInTi filler metal for active bonding of alumina ceramic

IF 2.5 4区 材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING
Linlin Yuan, Xiaomeng Huang, Yuefeng Qi, Xu Liu
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Abstract

In this paper, a novel AgCuInTi20-20–4.5 active filler paste for Al2O3 bonding was prepared using the route of vacuum smelting and centrifugal atomizing powder production. The aim of the research was to characterize the AgCuInTi filler paste and to study the direct brazing of Al2O3 ceramics and copper. The microstructure and melting properties of AgCuInTi powder were analyzed using scanning electron microscopy (SEM) and differential scanning calorimeter (DSC). The brazing process was carried out on vacuum brazing furnace at 700 °C for 10 min. The joint microstructures were studied by means of SEM and EDS. The results show that Ti reacted with Al2O3 as the active element at the interface between ceramic and filler metal and finally realizing the metallurgical combination. Element In participated in the reaction with Ag and Cu. The main products in the brazing seam are TiO2, Cu3TiO4, Cu4Ti, Ag3In and Cu4In based on XRD. The mean value of tensile strength of the brazed joints is approximately 89 MPa. The studied AgCuInTi possesses excellent joining characteristics with several metallic and ceramic materials.

Abstract Image

氧化铝陶瓷活性键合用AgCuInTi填充金属的性能研究
采用真空熔炼离心雾化制粉的方法,制备了一种新型的AgCuInTi20-20-4.5型Al2O3粘结用活性填料浆料。研究了AgCuInTi填充膏体的性能,并对Al2O3陶瓷与铜的直接钎焊进行了研究。采用扫描电镜(SEM)和差示扫描量热仪(DSC)分析了AgCuInTi粉末的微观结构和熔化性能。在700℃真空钎焊炉上进行了10 min的钎焊过程,并利用扫描电镜和能谱仪对接头组织进行了研究。结果表明:Ti作为活性元素与Al2O3在陶瓷与钎料界面处发生反应,最终实现了冶金结合;元素In参与了与Ag和Cu的反应。XRD结果表明,钎焊焊缝中的主要产物为TiO2、Cu3TiO4、Cu4Ti、Ag3In和Cu4In。钎焊接头的抗拉强度平均值约为89 MPa。所研究的AgCuInTi与多种金属和陶瓷材料具有良好的连接特性。
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来源期刊
Welding in the World
Welding in the World METALLURGY & METALLURGICAL ENGINEERING-
CiteScore
4.20
自引率
14.30%
发文量
181
审稿时长
6-12 weeks
期刊介绍: The journal Welding in the World publishes authoritative papers on every aspect of materials joining, including welding, brazing, soldering, cutting, thermal spraying and allied joining and fabrication techniques.
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