Journal
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
Volume 33, Issue 10, Pages 3054-3066Publisher
ELSEVIER
DOI: 10.1016/S1003-6326(23)66317-4
Keywords
induction heating; oxide film; SAC305; intermetallic compound; shear strength
Categories
Ask authors/readers for more resources
The oxidation behavior and kinetics of intermetallic compound (IMC) growth in SAC305/Cu solder joints were investigated using an electromagnetic induction heating device. The results show that rapid thermal shock leads to oxidation of the solder joint, exacerbated by the presence of internal Cu6Sn5 IMC. The growth of Cu6Sn5 layer is controlled by grain boundary diffusion, while Cu3Sn layer growth is controlled by bulk diffusion.
Oxidation behavior of SAC305/Cu solder joints and kinetics of intermetallic compound (IMC) growth were investigated using an electromagnetic induction heating device. The results show that the solder joint undergoes oxidation when subjected to rapid thermal shock. The oxidation behavior of the solder joint itself is the main factor, which is exacerbated by the presence of the internal Cu6Sn5 IMC. The growth of the Cu6Sn5 layer is controlled by grain boundary diffusion, while that of the Cu3Sn layer is controlled by bulk diffusion. The dissolved Cu of the substrate diffuses mainly into the interfacial IMC and the interior of the solder. Under rapid thermal shock, the shear strength of the solder joint decreases substantially, by 49.2% after 72 h. The fracture mechanism changes from ductile fracture to mixed tough-brittle fracture and finally, to brittle fracture.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available