| About this Abstract |
| Meeting |
Materials in Nuclear Energy Systems (MiNES) 2021
|
| Symposium
|
Materials in Nuclear Energy Systems (MiNES) 2021
|
| Presentation Title |
3D Reconstruction and Quantification of Oxide Nano-porosity in Zirconium Alloys |
| Author(s) |
Hongliang Zhang, Adrien Couet, Taeho Kim, William Howland |
| On-Site Speaker (Planned) |
Hongliang Zhang |
| Abstract Scope |
In the corrosion of Zirconium alloy, the oxide grows at a decreasing rate until reaching critical thickness, followed by the sudden loss of the protective property in the oxide and growth of a new cycle of oxide. The oxidizing-induced pores are pathways to oxidizing species in the oxide. TEM is usually used to determine pore density and size. However, due to the size of the pores and the thickness of the TEM samples, some of the pores are invisible in TEM at only one angle. Manually counting pores will also bring some artifacts. We precisely quantify oxide porosity in corroded Zircaloy-4 as function of exposure time and temperatures using manual and machine-learning-based counting. The structure and distribution of pore in different depths are analyzed to study porosity interconnection using 3D pore reconstruction. Then discussed as function of substrate texture to study lattice mismatch vs stress-driven oxide growth. |
| Proceedings Inclusion? |
Undecided |