In situ transmission electron microscopy as a toolbox for the emerging science of nanometallurgy
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in: Lab on a Chip, Jahrgang 23.2023, Nr. 14, 16.06.2023, S. 3186-3193.
Publikationen: Beitrag in Fachzeitschrift › Artikel › Forschung › (peer-reviewed)
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TY - JOUR
T1 - In situ transmission electron microscopy as a toolbox for the emerging science of nanometallurgy
AU - Santa Rosa Coradini, Diego
AU - Tunes, Matheus Araujo
AU - Willenshofer, Patrick
AU - Samberger, Sebastian
AU - Kremmer, Thomas
AU - Dumitraschkewitz, Phillip
AU - Uggowitzer, Peter
AU - Pogatscher, Stefan
N1 - Publisher Copyright: © 2023 The Royal Society of Chemistry.
PY - 2023/6/16
Y1 - 2023/6/16
N2 - Potential applications of nanomaterials range from electronics to environmental technology, thus a better understanding of their manufacturing and manipulation is of paramount importance. The present study demonstrates a methodology for the use of metallic nanomaterials as reactants to examine nanoalloying in situ within a transmission electron microscope. The method is further utilised as a starting point of a metallurgical toolbox, e.g. to study subsequent alloying of materials by using a nanoscale-sized chemical reactor for nanometallurgy. Cu nanowires and Au nanoparticles are used for alloying with pure Al, which served as the matrix material in the form of electron transparent lamellae. The results showed that both the Au and Cu nanomaterials alloyed when Al was melted in the transmission electron microscope. However, the eutectic reaction was more pronounced in the Al–Cu system, as predicted from the phase diagram. Interestingly, the mixing of the alloying agents occurred independently of the presence of an oxide layer surrounding the nanowires, nanoparticles, or the Al lamellae while performing the experiments. Overall, these results suggest that transmission electron microscope-based in situ melting and alloying is a valuable lab-on-a-chip technique to study the metallurgical processing of nanomaterials for the future development of advanced nanostructured materials.
AB - Potential applications of nanomaterials range from electronics to environmental technology, thus a better understanding of their manufacturing and manipulation is of paramount importance. The present study demonstrates a methodology for the use of metallic nanomaterials as reactants to examine nanoalloying in situ within a transmission electron microscope. The method is further utilised as a starting point of a metallurgical toolbox, e.g. to study subsequent alloying of materials by using a nanoscale-sized chemical reactor for nanometallurgy. Cu nanowires and Au nanoparticles are used for alloying with pure Al, which served as the matrix material in the form of electron transparent lamellae. The results showed that both the Au and Cu nanomaterials alloyed when Al was melted in the transmission electron microscope. However, the eutectic reaction was more pronounced in the Al–Cu system, as predicted from the phase diagram. Interestingly, the mixing of the alloying agents occurred independently of the presence of an oxide layer surrounding the nanowires, nanoparticles, or the Al lamellae while performing the experiments. Overall, these results suggest that transmission electron microscope-based in situ melting and alloying is a valuable lab-on-a-chip technique to study the metallurgical processing of nanomaterials for the future development of advanced nanostructured materials.
UR - http://www.scopus.com/inward/record.url?scp=85163471747&partnerID=8YFLogxK
U2 - 10.1039/d3lc00228d
DO - 10.1039/d3lc00228d
M3 - Article
VL - 23.2023
SP - 3186
EP - 3193
JO - Lab on a Chip
JF - Lab on a Chip
SN - 1473-0197
IS - 14
ER -