Niu, Min ; Jayanthi, K. ; Gao, Hongfei ; Solomon, Alexandre P. ; O'Quinn, Eric C. ; Su, Lei ; Qin, Yuanbin ; Toimil-Molares, Maria Eugenia ; Wang, Hongjie ; Lang, Maik ; Navrotsky, Alexandra (2023)
Structural and thermodynamic evolution of an amorphous SiOC ceramic after swift heavy ion irradiation.
In: Acta Materialia, 242
doi: 10.1016/j.actamat.2022.118475
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Radiation induced structural and energetic changes have been widely studied in crystalline materials, but studied to a much lesser extent in amorphous solids. Using a combination of neutron pair distribution function (PDF) analysis and high temperature oxide melt solution calorimetry, we obtained critical insights into the structural and energetic evolution in a swift heavy ion irradiated amorphous SiOC polymer-derived ceramic. The radiation modified SiOC structure becomes energetically less stable by 24.0±1.6 kJ/mol compared to the unirradiated structure. This destabilization is related to decreased connectivity of the Si-O-C network and destruction of free carbon. In comparison with unirradiated SiOC, the irradiated structure is more likely to become phase separated during subsequent thermal annealing. Our study has important implications for evaluating amorphous SiOC ceramic as a possible radiation resistant structure for nuclear applications.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2023 |
| Autor(en): | Niu, Min ; Jayanthi, K. ; Gao, Hongfei ; Solomon, Alexandre P. ; O'Quinn, Eric C. ; Su, Lei ; Qin, Yuanbin ; Toimil-Molares, Maria Eugenia ; Wang, Hongjie ; Lang, Maik ; Navrotsky, Alexandra |
| Art des Eintrags: | Bibliographie |
| Titel: | Structural and thermodynamic evolution of an amorphous SiOC ceramic after swift heavy ion irradiation |
| Sprache: | Englisch |
| Publikationsjahr: | 1 Januar 2023 |
| Verlag: | Elsevier |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Acta Materialia |
| Jahrgang/Volume einer Zeitschrift: | 242 |
| DOI: | 10.1016/j.actamat.2022.118475 |
| Kurzbeschreibung (Abstract): | Radiation induced structural and energetic changes have been widely studied in crystalline materials, but studied to a much lesser extent in amorphous solids. Using a combination of neutron pair distribution function (PDF) analysis and high temperature oxide melt solution calorimetry, we obtained critical insights into the structural and energetic evolution in a swift heavy ion irradiated amorphous SiOC polymer-derived ceramic. The radiation modified SiOC structure becomes energetically less stable by 24.0±1.6 kJ/mol compared to the unirradiated structure. This destabilization is related to decreased connectivity of the Si-O-C network and destruction of free carbon. In comparison with unirradiated SiOC, the irradiated structure is more likely to become phase separated during subsequent thermal annealing. Our study has important implications for evaluating amorphous SiOC ceramic as a possible radiation resistant structure for nuclear applications. |
| Freie Schlagworte: | amorphous SiOC, irradiation effect, neutron diffraction, calorimetry |
| Zusätzliche Informationen: | Artikel-ID: 118475 |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Ionenstrahlmodifizierte Materialien |
| Hinterlegungsdatum: | 26 Feb 2024 07:37 |
| Letzte Änderung: | 26 Feb 2024 13:08 |
| PPN: | 515815934 |
| Export: | |
| Suche nach Titel in: | TUfind oder in Google |
 |
Frage zum Eintrag |
Optionen (nur für Redakteure)
 |
Redaktionelle Details anzeigen |
Drucken
Impressum