Abstract
Using wetting balance method, the wettability of Ni-based amorphous and crystalline alloys by Sn and Sn-based solders (Sn-0.7Cu, Sn-0.3Ag-0.7Cu, and eutectic SnPb (E-SnPb, Sn63Pb37)) was evaluated at 290–310 °C. Among these solders, Sn shows the best wettability with amorphous alloy because of the strongest interfacial reactivity for oxide film removal, and E-SnPb shows the best wettability with crystalline alloy due to the minimum surface tension of E-SnPb solder. Generally, amorphous alloys have the better wettability. At least two factors caused this situation, i.e., the relatively larger surface energy of amorphous alloy and the volume shrinkage caused by the structural relaxation and the primary crystallization during wetting. In this study, the wetting mechanism actually is the deoxideation, which includes the reaction of Sn with NiO, and the mechanical removal of the oxide film.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
