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Electrochemical Corrosion of SAC Alloys: A Review

Department of Electronics Technology, Budapest University of Technology and Economics, 1111 Budapest, Hungary
Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, 1117 Budapest, Hungary
Author to whom correspondence should be addressed.
Metals 2020, 10(10), 1276;
Received: 25 August 2020 / Revised: 13 September 2020 / Accepted: 19 September 2020 / Published: 23 September 2020
(This article belongs to the Special Issue Reliability Aspects of Lead-Free Solder Alloys Used in Electronics)
Tin–silver–copper (SAC) solder alloys are the most promising candidates to replace Sn–Pb solder alloys. However, their application is still facing several challenges; one example is the electrochemical corrosion behaviour, which imposes a risk to electronics reliability. Numerous investigations have been carried out to evaluate the corrosion performance of SAC lead-free alloys, regarding the effect of the corrosive environment, the different manufacturing technologies, the effect of fluxes, the metallic contents within the SAC alloys themselves, and the different alloying elements. In these studies, widely used electrochemical techniques are applied as accelerated corrosion tests, such as linear sweep voltammetry and electrochemical impedance spectroscopy. However, there is lack of studies that try to summarise the various corrosion results in terms of lead-free solder alloys including low-Ag and composite solders. This study aims to review these studies by showing the most important highlights regarding the corrosion processes and the possible future developments. View Full-Text
Keywords: electrochemical corrosion; SAC alloys; linear sweep voltammetry; electrochemical impedance spectroscopy electrochemical corrosion; SAC alloys; linear sweep voltammetry; electrochemical impedance spectroscopy
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MDPI and ACS Style

Gharaibeh, A.; Felhősi, I.; Keresztes, Z.; Harsányi, G.; Illés, B.; Medgyes, B. Electrochemical Corrosion of SAC Alloys: A Review. Metals 2020, 10, 1276.

AMA Style

Gharaibeh A, Felhősi I, Keresztes Z, Harsányi G, Illés B, Medgyes B. Electrochemical Corrosion of SAC Alloys: A Review. Metals. 2020; 10(10):1276.

Chicago/Turabian Style

Gharaibeh, Ali, Ilona Felhősi, Zsófia Keresztes, Gábor Harsányi, Balázs Illés, and Bálint Medgyes. 2020. "Electrochemical Corrosion of SAC Alloys: A Review" Metals 10, no. 10: 1276.

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