Published April 15, 2019 | Version v1
Journal article Metadata-only

Electrochemical migration failure mechanism and dendrite composition characteristics of Sn96.5Ag3.0Cu0.5 alloy in thin electrolyte films

Creators

  • 1. University of Science and Technology Beijing, Beijing Advanced Innovation Center for Materials Genome Engineering, Key Laboratory for Corrosion and Protection (MOE) (China)

Description

The effects of chloride ions on electrochemical migration (ECM) of Sn96.5Ag3.0Cu0.5 (SAC 305) solder alloy are studied through in situ electrochemical observation device and ex situ transmission electron microscope (TEM) and X-ray photoelectron spectroscopy (XPS) techniques. The results show that the time to short circuit is the longest at intermediate NaCl concentration, which is related to the precipitates between two electrodes. The composition of dendrite inspected by TEM-EDS and XPS techniques shows that dendrites do not contain elements Ag and Cu, which suggests that Sn is the only migration element in SAC 305 alloy.

Additional details

Identifiers

DOI
10.1007/s10854-019-00964-3;

Publishing Information

Journal Title
Journal of Materials Science. Materials in Electronics
Journal Volume
30
Journal Issue
7
Journal Page Range
p. 6575-6582
ISSN
0957-4522
CODEN
JSMEEV

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
52019384
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
CHLORINE IONS; COPPER; CRYSTAL LATTICES; DENDRITES; ELECTROCHEMISTRY; MIGRATION; SILVER; SODIUM CHLORIDES; TELLURIUM ALLOYS; THIN FILMS; TRANSMISSION ELECTRON MICROSCOPY; X-RAY PHOTOELECTRON SPECTROSCOPY
Descriptors DEC
ALKALI METAL COMPOUNDS; ALLOYS; CHARGED PARTICLES; CHEMISTRY; CHLORIDES; CHLORINE COMPOUNDS; CRYSTAL STRUCTURE; CRYSTALS; ELECTRON MICROSCOPY; ELECTRON SPECTROSCOPY; ELEMENTS; FILMS; HALIDES; HALOGEN COMPOUNDS; IONS; METALS; MICROSCOPY; PHOTOELECTRON SPECTROSCOPY; SODIUM COMPOUNDS; SODIUM HALIDES; SPECTROSCOPY; TRANSITION ELEMENTS

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Copyright
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