|About this Abstract
||2023 TMS Annual Meeting & Exhibition
||Phase Stability, Phase Transformations, and Reactive Phase Formation in Electronic Materials XXII
||Ag and Cu Whisker Formation
||Sinn-wen Chen, Pin- Shuo Huang, Yohanes Hutabalian
|On-Site Speaker (Planned)
The Ag-Cu-Se-Te quaternary system is an important material system. Hair-like Ag and Cu whiskers are observed when Ag-Cu-Te and Ag-Cu-Se alloys are heat-treated. Their width is 10-100 μm and their length is as long as many centimeters. EDS, EPMA, XRD and EBSD are used to analyze their compositions, structures, and orientations. According to the compositions, there are three kinds of whiskers, Ag, Cu and Ag+Cu mixed. Compositional analysis results indicate the mutual solubilities of Ag and Cu are less than 1.5at.%. Grain boundaries are observed in the EBSD results of the whisker’s cross-section and plan-view. The results indicate these whiskers are not single crystals. Low-angle grain boundaries are observed in the orientation mapping and grain boundaries mapping. Stress is the driving force for whisker growth and is also the cause for formation of grains.
||Electronic Materials, Phase Transformations,