Crystal Structure and Microstructure of Electrodeposited Sn-Ag Alloys

Effects of Electrical Current on Microstructure and Interface Properties of Sn–Ag–Cu/Ag Photovoltaic Ribbons

This study presents an electrical current testing that is based on the Sn­xAg­0.5Cu (x = 1, 3mass%) photovoltaic (PV) ribbon, and investigates the growth mechanism of the intermetallic compounds (IMCs). The microstructure of both alloy solders contains the eutectic region (¢-Sn+Cu6Sn5+Ag3Sn) and the base phases (¢-Sn). The eutectic phases in the Sn­3Ag­0.5Cu (SAC305) alloy presented a continuou...

Electrodeposited Iron Group Thin-Film Alloys Structure-Property Relationships

Various iron group alloys have been electrodeposited and evaluated for properties including corrosion resistance, microstructure, electrical resistivity, magnetoresistance and other magnetic properties. Corrosion resistance depends on deposit composition and microstructure, which are controlled by solution composition and deposition variables. Maximum corrosion resistance was observed for 50Ni5...

The Microstructure and Crystal Orientation of Sn-Ag and Sn-Cu Solders Affected by their Interfacial Reactions with Cu and Ni(P)

Recently, it has been reported that the crystal orientation and grain size of the β-Sn phase in Sn-rich solders have profound effects on the reliabilities of Pb-free solder joints, such as thermo-mechanical fatigue, electromigration, and among others. Additionally, it is also known that the microstructure of Sn-rich solders is strongly affected by their alloy composition. In this study, the gra...

The evolution of microstructure and microhardness of Sn-Ag and Sn-Cu solders during high temperature aging

The changes in microstructure and microhardness of Sn-0.5%Ag, Sn-1.0%Ag, and Sn-0.7%Cu Pb-free solders were investigated during high temperature aging at 200°C for 2 h. As-solidified microstructures, revealed by cross-polarized light microscopy, consist of relatively large grains of β-Sn phase with twinned microstructure in both Sn-Ag and Sn-Cu solders. The bright-field light microscopy display...

Serdp Pollution Prevention Project Pp 1150 Electrodeposited Mn-sn-x Alloys for Corrosion Protection Coatings