Study on the In-situ Reaction Process of AgCuSnTi Brazing Filler Metal Synthesized In-situ

ZHAO Yijia; JIU Yongtao; YING Huiming; ZHANG Lei; ZHONG Sujuan; WANG Dezhu

doi:10.7512/j.issn.1001-2303.2024.06.02

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Study on the In-situ Reaction Process of AgCuSnTi Brazing Filler Metal Synthesized In-situ
Vol. 54, Issue 6, Pages: 7-12(2024)
Published： 25 June 2024 ，
DOI： 10.7512/j.issn.1001-2303.2024.06.02
稿件说明：

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赵亦嘉，纠永涛，尹慧明，等.原位合成AgCuSnTi钎料原位反应过程研究［J］.电焊机，2024，54（6）：7-12.

ZHAO Yijia, JIU Yongtao, YING Huiming, et al.Study on the In-situ Reaction Process of AgCuSnTi Brazing Filler Metal Synthesized In-situ[J].Electric Welding Machine, 2024, 54(6): 7-12.
赵亦嘉，纠永涛，尹慧明，等.原位合成AgCuSnTi钎料原位反应过程研究［J］.电焊机，2024，54（6）：7-12. DOI： 10.7512/j.issn.1001-2303.2024.06.02.

ZHAO Yijia, JIU Yongtao, YING Huiming, et al.Study on the In-situ Reaction Process of AgCuSnTi Brazing Filler Metal Synthesized In-situ[J].Electric Welding Machine, 2024, 54(6): 7-12. DOI： 10.7512/j.issn.1001-2303.2024.06.02.

摘要

为探究AgCuSn基活性钎料原位反应进程，使用Ag、Cu、Sn、Ti单质金属粉按不同质量分数比机械混合，并加入适量粘结剂和水配置成焊膏，加热至不同温度并保温。采用扫描电子显微镜（SEM）和能谱扫描仪（EDS）等对钎料微观组织进行表征，基于热力学理论及扩散理论分析探究钎料原位反应进程。结果表明：原位反应主要分为三个阶段，第一阶段：Sn熔化后钎料中反应产生Cu

、Cu

Sn二元金属间化合物。第二阶段：在650℃到750 ℃左右钎料初步合金化，在Ti金属粉周围形成圈层结构扩散层，该扩散层由CuTi二元金属间化合物组成。第三阶段：在850 ℃左右钎料完全合金化，与石墨基板充分接触并形成冶金结合。

Abstract

To investigate the in-situ reaction process of AgCuSn-based active brazing materials

this experiment mechanically mixed elemental powders of Ag

and Ti in various mass fraction ratios

with an appropriate amount of binder and water to form a brazing paste

which was then heated to different temperatures and maintained. The microstructure of the brazing material was characterized using Scanning Electron Microscopy (SEM) and Energy Dispersive Spectroscopy (EDS)

and the in-situ reaction process was explored based on thermodynamic theory and diffusion theory. The results indicate that the in-situ reaction mainly occurs in three stages. In the first stage

the melting of Sn leads to the formation of binary intermetallic compounds Cu

and Cu

Sn within the brazing material. In the second stage

at approximately 650 ℃ to 750 ℃

the brazing material begins to alloy

forming a ring-layered diffusion layer around the Ti metal powder

composed of CuTi binary intermetallic compounds. In the third stage

at around 850 ℃

the brazing material fully allo

making full contact with the graphite substrate and forming a metallurgical bond.

关键词

AgCuSnTi四元钎料原位反应显微组织冶金结合

Keywords

AgCuSnTi quaternary brazing materialin-situ reactionmicrostructuremetallurgical bond

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