| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Electronic Packaging and Interconnection Materials
|
| Presentation Title |
Phase Formation and Transformation Behavior in Rapidly Solidified Ag-Si Alloys |
| Author(s) |
Yicheng Zhang, Koji S. Nakayama, Chuantong Chen, Minoru Ueshima, Katsuaki Suganuma |
| On-Site Speaker (Planned) |
Yicheng Zhang |
| Abstract Scope |
Non-equilibrium processes are commonly used to obtain metastable phases. Furthermore, alloys produced by different processes may have different phases, although they have the same composition. Our group has prepared eutectic Ag-Si alloy powders for semiconductor bonding materials using a gas atomization method and confirmed the presence of a primary Ag phase in the atomized powder. For the Ag-Si system, the rapid solidification from the liquid state leads to undercooling, and the eutectic point shifts to the hypereutectic side. The melt-spinning method can solidify the material at a cooling rate of about 106 °C/s, which is even faster than the gas atomization method. Thus, it is expected to obtain the Ag-Si alloy containing a large amount of metastable structures. In this study, Ag-Si alloys were prepared by the melt-spinning method, and the rapidly solidified structures and thermal properties in the alloys were evaluated and compared with those of the atomized powder. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Electronic Materials, Joining, Phase Transformations |