Corrosion behavior of lead-free SAC-type solder alloys in liquid media
作者： A. Wierzbicka-Miernik , J. Guspiel , L. Zabdyr
DOI: 10.1016/J.ACME.2014.03.003
关键词:
摘要: Abstract New lead-free solders are developed for electronic assemblies as a replacement traditional Pb-containing alloys. The main goal of this study was to investigate the corrosion resistance ternary Sn–Ag–Cu (SAC) alloys in air-saturated aqueous solutions NaCl (including sea water) and containing NO 3 − , SO 4 2− Cl ions concentration equivalent those acid rains. Atomic Absorption Spectrometry (AAS) used determine Ag, Cu Sn concentrations corrosive media. potential current were obtained using potentiodynamic polarization technique. Corrosion experiments with method revealed that considerably resistant liquid media used. eutectic composition alloy characterized by higher than near one despite very small differences chemical composition. rate during spontaneous dissolution lower derived from because blocking reaction surface products.
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