Journal article
Effect of iodine on the corrosion of Au-Al wire bonds
Corrosion study was performed on Au-Al wire bonds, thin layers of sputter deposited Au and Al, and Au-Al intermetallic nuggets. The test environment was iodine-vapour in air (1. mg/L) at 85 °C with varying relative humidity, and 500 mg/L of KI in water. GDOES, XRD, SEM EDS, wire bond shear, and electrochemical testing were used to characterize the samples.
Failures of Au-Al wire bonds were found to be primarily attributed to the corrosion of Al via formation of Al iodides and consequent formation of Al oxides and/or hydroxides. Most susceptible to corrosion are Al metallization and Al rich intermetallic phases.
Language: | English |
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Year: | 2015 |
Pages: | 161-171 |
ISSN: | 0010938x and 18790496 |
Types: | Journal article |
DOI: | 10.1016/j.corsci.2015.05.003 |
ORCIDs: | Verdingovas, Vadimas , Jellesen, Morten Stendahl , Grumsen, Flemming Bjerg and Ambat, Rajan |