About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Self-organizing Nano-architectured Materials
|
Presentation Title |
Superinsulation Nanoporous Material, Silica and Biosourced Aerogels Observed in 3D Down to the Nanoscale with Electron Tomography |
Author(s) |
Genevieve Foray, Louis-marie Lebas, Lucian Roiban |
On-Site Speaker (Planned) |
Genevieve Foray |
Abstract Scope |
Assessing the efficiency of super-insulation products is a key step before they can become widespread in the building, or in transportation industry. Cutting edge techniques, such as electron and x ray tomography are of interest. They provide both, 3D images and 3D quantification of the pore and particles network. Thus, confidence increase in texture and properties relationship. We shade light on benefits and limitation of Fast electron tomography dedicated to highly beam sensitive materials
Our study focuses on silica aerogels and biomass aerogels and aims at quantifying the materials nanostructure. They differ in their chemistry (intentionally hydrophobized silica, natural polymer), in their synthesis processes, but also in properties such as thermal conductivity or specific surfaces. Pore size distribution and connectivity are discussed. Image analysis tools used to treat tomography prior to quantification are explained, as well as specificity due to the low contrast. |
Proceedings Inclusion? |
Undecided |
Keywords |
Nanotechnology, Characterization, Other |