About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
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Local Ordering in Materials and Its Impacts on Mechanical Behaviors, Radiation Damage, and Corrosion
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Presentation Title |
Role of Nanoscale Heterogeneities on Charged Species Transport and Oxide Growth: Example of Noble Metallic Inclusions |
Author(s) |
Adrien Couet, Yongfeng Zhang, Junliang Liu, Ricardo Vidrio, Maryam Zahedian, Jennifer Choy |
On-Site Speaker (Planned) |
Adrien Couet |
Abstract Scope |
While alloy design becomes more intricate and environments more extreme, all classical oxidation theories for stable oxide growth in high-temperature environments are one-dimensional, adopting the assumption of homogeneous oxide layers. Albeit the common observations of heterogeneous oxides, a theoretical understanding is yet to emerge on how such heterogeneities affect charged particle transport and oxide growth kinetics, and whether they are intercorrelated. In this study, we investigate the impact of nanoscale heterogeneities in the oxide on charged species transport and oxide growth using an integrated experimental and modeling approach. Nanoscale noble metallic inclusions (NMIs) are synthesized inside an oxide matrix using a series of plasma vapor deposition and electron beam lithography techniques. The space charge around the NMIs is measured using transmission electron diffraction technique and the results support phase field model validation. Finally, isotopic oxidation and quantum sensor techniques are developed to measure charged species transport in heterogeneous oxides. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, Environmental Effects, Composites |