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Understanding the enhanced corrosion resistance of micro-alloyed SnAg solder based on surface native oxide film evolution

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science Pub Date : 2025-09-24 DOI:10.1016/j.corsci.2025.113356

Weifeng Ma , Hai Wang , Chuang Qiao , Taoyu Zhou , Chunli Dai , Mingna Wang , Long Hao

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引用次数: 0

Abstract

The refinement of Ag₃Sn phase is traditionally taken as an important criterion to improve the corrosion resistance of SnAg solder. In this work, the effects of Zn and Ni addition on corrosion resistance of SnAg solder have been investigated. Results indicate that 0.5 wt% Zn addition greatly refines the size of Ag₃Sn but lowers the corrosion resistance of SnAg solder. In contrast, 0.5 wt% Ni addition cannot refine Ag₃Sn grains but can enhance the corrosion resistance of SnAg solder. It has been found that the micro-alloying induced surface native oxide film evolution is responsible for the observed corrosion resistance evolution. Therefore, it has been proposed that the alloying elements that can promote the formation of a stable and compact surface native oxide film are also of interest to corrosion resistance improvement, thus offering another consideration to develop corrosion-resistant SnAg solder.

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基于表面原生氧化膜演化的微合金SnAg焊料耐蚀性增强研究

传统上认为，Ag3Sn相的细化是提高SnAg钎料耐蚀性的重要标准。本文研究了添加Zn和Ni对SnAg钎料耐蚀性的影响。结果表明，添加0.5 wt% Zn可使Ag3Sn晶粒细化，但降低SnAg焊料的耐蚀性。相反，添加0.5 wt%的Ni不能细化Ag3Sn晶粒，但可以提高SnAg焊料的耐腐蚀性。结果表明，微合金化诱导的表面原生氧化膜的形成是导致耐蚀性能变化的主要原因。因此，提出了能够促进表面天然氧化膜形成稳定致密的合金元素也是提高耐蚀性的兴趣所在，从而为开发耐蚀SnAg焊料提供了另一种考虑。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Corrosion Science

Corrosion Science 工程技术-材料科学：综合

CiteScore

13.60

自引率

18.10%

发文量

763

审稿时长

46 days

期刊介绍： Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies. This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.

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