Corrosion investigations on lead-free solder alloys in MgCl2 and NaCl solutions

2017 IEEE 23rd International Symposium for Design and Technology in Electronic Packaging (SIITME) Pub Date : 2017-10-01 DOI:10.1109/SIITME.2017.8259940

B. Medgyes, Gyorgy Kosa, Patrik Tamási, B. Szabó, B. Illés, M. Lakatos-varsányi, D. Rigler, L. Gál, M. Ruszinkó, G. Harsányi

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引用次数: 3

Abstract

This study presents the corrosive properties of five various lead-free solder alloys (including Innolot and SAC305) at room temperature. The measurements were carried out in a 0.38 wt % magnesium chloride solution and in various NaCl solutions: 0.1mM, 1mM, 10mM, 500mM and saturated one. After linear sweep voltammetry (LSV) measurements the solder alloys were also investigated by scanning electron microscope (SEM) and energy-dispersive x-ray spectroscopy (EDX) methods. The LSV results showed that the corrosion resistance of Innolot was significantly lower compared to the other ones, such as SAC305 solder alloy in case of MgCl2. Moreover, according to the EDX results bismuth and antimony were detected in the products of Innolot using MgCl2 solution. In case of NaCl measurements, the results showed that Innolot has higher corrosion resistance in case of low, medium and saturated NaCl concentrations, while this result was changed at 500mM NaCl concentration level.

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无铅钎料合金在MgCl2和NaCl溶液中的腐蚀研究

研究了五种不同的无铅钎料合金(包括innoot和SAC305)在室温下的腐蚀性能。测量在0.38 wt %氯化镁溶液和各种NaCl溶液中进行:0.1mM, 1mM, 10mM, 500mM和饱和的NaCl溶液。在线性扫描伏安法(LSV)测量后，用扫描电子显微镜(SEM)和能量色散x射线能谱(EDX)方法对钎料合金进行了研究。LSV结果表明，在MgCl2条件下，innoot的耐蚀性明显低于SAC305钎料合金。此外，根据EDX结果，用MgCl2溶液检测了innoot产品中的铋和锑。NaCl测试结果表明，在低、中、饱和NaCl浓度下，innonolot具有较高的耐蚀性，而在500mM NaCl浓度下，这一结果发生了变化。

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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2017 IEEE 23rd International Symposium for Design and Technology in Electronic Packaging (SIITME)

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