Imperial College London
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ProfessorBaptisteGault

Faculty of Engineering, Department of Materials

Professor of Atomic-Scale Characterization
 
 
 
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Contact

 

b.gault

 
 
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Location

 

Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Kim:2022:10.1016/j.mtla.2022.101595,
author = {Kim, S-H and Stephenson, LT and da, Silva AK and Gault, B and El-Zoka, AA},
doi = {10.1016/j.mtla.2022.101595},
journal = {Materialia},
title = {Phase separation and anomalous shape transformation in frozen microscale eutectic indium},
url = {http://dx.doi.org/10.1016/j.mtla.2022.101595},
volume = {26},
year = {2022}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The eutectic Ga-In (EGaIn) alloy has low vapour pressure, low toxicity, high thermal and electrical conductivities, and thus has shown a great potential for smart material applications. For such applications, EGaIn is maintained above its melting point, below which it undergoes solidification and phase separation. A scientific understanding of the structural and compositional evolution during thermal cycling could help further assess the application range of low-melting-point fusible alloys. Here, we use an integrated suite of cryogenically-enabled advanced microscopy & microanalysis to better understand phase separation and (re)mixing processes in EGaIn. We reveal an overlooked thermal-stimulus-response behaviour for frozen mesoscale EGaIn at cryogenic temperatures, with a sudden apparent volume expansion observed during in-situ heat-cycling, associated with the immiscibility between Ga and In during cooling and the formation of metastable Ga phases. These results emphasize the importance of the kinetics of rejuvenation, and open new paths for EGaIn as a self-healing material.
AU  - Kim,S-H
AU  - Stephenson,LT
AU  - da,Silva AK
AU  - Gault,B
AU  - El-Zoka,AA
DO  - 10.1016/j.mtla.2022.101595
PY  - 2022///
SN  - 2589-1529
TI  - Phase separation and anomalous shape transformation in frozen microscale eutectic indium
T2  - Materialia
UR  - http://dx.doi.org/10.1016/j.mtla.2022.101595
UR  - https://www.sciencedirect.com/science/article/pii/S2589152922002769
VL  - 26
ER  -
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