| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Panchenko, Juliana
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (23/23 displayed)
- 2024Laboratory X-ray Microscopy of 3D Nanostructures in the Hard X-ray Regime Enabled by a Combination of Multilayer X-ray Opticscitations
- 2023Intermetallic Growth Study of Ultra-Thin Copper and Tin Bilayer for Hybrid Bonding Applicationscitations
- 2023Cu-Cu Thermocompression Bonding with a Self-Assembled Monolayer as Oxidation Protection for 3D/2.5D System Integrationcitations
- 2022Corrosion study on Cu/Sn-Ag solid-liquid interdiffusion microbumps by salt spray testing with 5 wt.% NaCl solutioncitations
- 2022Metallurgical aspects and joint properties of Cu-Ni-In-Cu fine-pitch interconnects for 3D integrationcitations
- 2022Determination of melting and solidification temperatures of Sn-Ag-Cu solder spheres by infrared thermographycitations
- 2020Grain Structure Analysis of Cu/SiO2 Hybrid Bond Interconnects after Reliability Testingcitations
- 2020Low temperature solid state bonding of Cu-In fine-pitch interconnects
- 2020Morphologies of Primary Cu6Sn5 and Ag3Sn Intermetallics in Sn–Ag–Cu Solder Ballscitations
- 2020Grain Structure Analysis of Cu/SiO2Hybrid Bond Interconnects after Reliability Testingcitations
- 2019Effects of isothermal storage on grain structure of Cu/Sn/Cu microbump interconnects for 3D stackingcitations
- 2018Morphology Variations of Primary Cu6Sn5 Intermetallics in Lead-Free Solder Ballscitations
- 2018Characterization of low temperature Cu/In bonding for fine-pitch interconnects in three-dimensional integrationcitations
- 2017Influence of flux-assisted isothermal storage on intermetallic compounds in Cu/SnAg microbumpscitations
- 2017Fabrication and characterization of precise integrated titanium nitride thin film resistors for 2.5D interposercitations
- 2014Degradation of Cu6Sn5 intermetallic compound by pore formation in solid-liquid interdiffusion Cu/Sn microbump interconnectscitations
- 2013Microstructure investigation of Cu/SnAg solid-liquid interdiffusion interconnects by Electron Backscatter Diffractioncitations
- 2012Effects of bonding pressure on quality of SLID interconnectscitations
- 2011The creep behaviour and microstructure of ultra small solder jointscitations
- 2011Solidification processes in the Sn-rich part of the SnCu systemcitations
- 2010Microstructure Characterization Of Lead‐Free Solders Depending On Alloy Compositioncitations
- 2010The scaling effect on microstructure and creep properties of Sn-based solderscitations
- 2010Metallographic preparation of the SnAgCu solders for optical microscopy and EBSD Investigationscitations
Places of action
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document
Solidification processes in the Sn-rich part of the SnCu system
Abstract
In this study SnCu solder spheres (Ø 270 μm, CR ~ 1 K/s) were investigated in order to verify the solidified microstructure according to the Sn-rich part of the SnCu phase diagram. The investigated alloys are Sn99.9, SnCu0.25, SnCu0.5, SnCu0.7, SnCu0.9, SnCu1.2, SnCu1.5, and SnCu3.0. In order to understand the solidification process, such aspects as morphology, grain structure and undercooling were analysed. The microstructure was investigated by optical microscopy, SEM and EDX. The undercooling was measured by DSC. It will be shown that small SnCu solder spheres solidify not only with commonly known β-Sn dendrites and fine Cu6Sn5 IMCs in the interdendritic spacing, but with specific and systematic changes in morphology, which depend on composition. The successive morphology transitions were found: from 1) fine Cu6Sn5 IMCs in β-Sn to 2) small β-Sn cells to 3) β-Sn cellular/dendritic to 4) fine Cu6Sn5 IMCs in β-Sn or undirected β-Sn cells. The area fraction of these different morphologies and the number of grain orientations were estimated from the cross-sections of about 20 solder spheres per composition. This allows a quantitative description of the microstructure and its compositional dependency. The results also show that the formation of large Cu6Sn5 IMCs provokes more grain orientations compared to SnCu solders solidified without large intermetallic phases.