Effects of Ti3AlC2 on the Microstructure, Hardness, and Corrosion Resistance of Sn-58Bi-0.075GNSs Solder Alloy

IF 2.3 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

JOM Pub Date : 2025-07-02 DOI:10.1007/s11837-025-07532-7

Dongliang Ma, Zhiyuan Liu, Jialin Wang, Xin Zheng

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引用次数: 0

Abstract

This study investigated the effect of adding Ti₃AlC₂ to composite solders consisting of Sn-58Bi-0.075GNSs. Different weight percentages (x = 0 wt.%, 0.25 wt.%, 0.5 wt.%, 0.75 wt.%, and 1.0 wt.%) of Ti₃AlC₂ were incorporated into the solder composites. The results showed that adding 0.5 wt.% Ti₃AlC₂ led to the most significant grain size refinement, reducing the average Bi phase intercept length by 55% compared to the Sn-58Bi-0.075GNSs solder. Ti₃AlC₂ acted as a nucleation site for the Bi-rich phase during solder solidification, preventing coarsening. It also formed a second phase along the grain boundaries, enhancing both grain refinement-strengthening and dispersion-strengthening mechanisms. Furthermore, the addition of 0.5 wt.% Ti₃AlC₂ resulted in the highest solder hardness, which was 6.2% greater than that of the Sn-58Bi-0.075GNSs solder. The Sn-58Bi-0.075GNSs-0.5Ti₃AlC₂ composite exhibited superior corrosion resistance, forming a dense passive film on the corroded surface.

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Ti3AlC2对Sn-58Bi-0.075GNSs钎料合金显微组织、硬度和耐蚀性的影响

本文研究了在Sn-58Bi-0.075GNSs复合钎料中添加Ti3AlC2的效果。不同重量百分比（x = 0 wt.%, 0.25 wt.%, 0.5 wt.%, 0.75 wt.%和1.0 wt.%）的Ti3AlC2被加入到焊料复合材料中。结果表明，与Sn-58Bi-0.075GNSs钎料相比，添加0.5 wt.% Ti3AlC2可使钎料晶粒细化，平均Bi相截距长度减少55%。在焊料凝固过程中，Ti3AlC2作为富bi相的成核点，防止了粗化。沿晶界形成第二阶段，强化了晶粒细化强化和分散强化机制。此外，添加0.5 wt.% Ti3AlC2的钎料硬度最高，比Sn-58Bi-0.075GNSs钎料硬度高6.2%。Sn-58Bi-0.075GNSs-0.5Ti3AlC2复合材料具有优异的耐蚀性，在腐蚀表面形成致密的钝化膜。

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来源期刊

JOM 工程技术-材料科学：综合

CiteScore

4.50

自引率

3.80%

发文量

540

审稿时长

2.8 months

期刊介绍： JOM is a technical journal devoted to exploring the many aspects of materials science and engineering. JOM reports scholarly work that explores the state-of-the-art processing, fabrication, design, and application of metals, ceramics, plastics, composites, and other materials. In pursuing this goal, JOM strives to balance the interests of the laboratory and the marketplace by reporting academic, industrial, and government-sponsored work from around the world.