Interfacial Reactions between Lead-Free Solders and the Multilayer Au/Ni/SUS304 Substrate
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Yee-Wen Yen
Abstract
Interfacial reactions between Sn, Sn-3.0 wt.% Ag-0.5 wt.% Cu (SAC) and an Au/Ni/SUS304 stainless steel (SUS304) substrate were conducted using the reaction couple technique at 240, 255 and 270 °C for 1 – 5 h. In the earliest stage of the reaction, only the Ni3Sn4 phase was formed on the Sn/Au/Ni/SUS304 interface. As the reaction time increased to 4 h, the Ni layer was gradually consumed and the Ni3Sn4 phase detached from the interface. Meanwhile, the Sn reacted with the SUS304 to form the FeSn2 phase. In the SAC/Au/Ni/SUS304 reaction couple, both Ni3Sn4 and Cu6Sn5 phases were formed on the interface. When the reaction time exceeded 4 h, the Ni3Sn4 phase disappeared; the Cu6Sn5 phase was spread over the SUS304 surface and the FeSn2 phase was formed on the SUS304 surface. The growth of intermetallic compounds can be described by the parabolic law and the reactions were diffusion-controlled.
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© 2009, Carl Hanser Verlag, München
Artikel in diesem Heft
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- Notifications
- DGM News
Artikel in diesem Heft
- Contents
- Contents
- Feature
- Nd–Fe–B permanent magnets a quarter century later: implications for patentability
- Micromagnetism of advanced hard magnetic materials
- Magnetism of nanostructured materials for advanced magnetic recording
- Basic
- A Study of the Al–Mg–B Ternary Phase Diagram
- Effects of Lanthanum on Magnetic Behavior and Hardness of Electroless Ni–Fe–P Deposits
- Interfacial Reactions between Lead-Free Solders and the Multilayer Au/Ni/SUS304 Substrate
- Melting Behavior of Sn–Bi Alloy Powder Compacts Observed Using Optical Dilatometry
- High-Strength Mg-Based Bulk Metallic Glass Composites with Remarkable Plasticity
- Determination of Liquidus Temperature in Sn–Ti–Zr Alloys by Viscosity, Electrical Conductivity and XRD Measurements
- The coupled FEM analysis of super-high angular speed polishing of diamond films
- Applied
- Comparison of Depth-Sensing Indentation at Ultramicroscopic Contacts by Single- and Multiple-Partial-Unload Cycles
- Sintering Behavior of ZnO: Mn Ceramics Fabricated from Sol-Gel Derived Nanocrystalline powders
- Suitability of Maraging Steel Weld Cladding for Repair of Die-Casting Tooling
- Enhanced properties of functionally graded Cu–Cr powder compacts
- Influence of Cr on the microstructure and mechanical properties of Ti–Si Eutectic Alloys
- Notifications
- DGM News