@article{fcea7d559ce542d5aa77b16b7113a6f9,
title = "Structural and thermodynamic evolution of an amorphous SiOC ceramic after swift heavy ion irradiation",
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.",
keywords = "Amorphous SiOC, Calorimetry, Irradiation effect, Neutron diffraction",
author = "Min Niu and K. Jayanthi and Hongfei Gao and Solomon, {Alexandre P.} and O'Quinn, {Eric C.} and Lei Su and Yuanbin Qin and Toimil-Molares, {Maria Eugenia} and Hongjie Wang and Maik Lang and Alexandra Navrotsky",
note = "Funding Information: This manuscript has been authored by UT-Battelle, LLC under Contract No. DEAC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (hxxp://energy.gov/downloads/doe-public-access-plan). Funding Information: M.N. and H.G. appreciate the financial support of the National Natural Science Foundation of China (No. 11905166 , 12205354 ). A.N. and K.J. acknowledge the support of the U.S. Department of Energy, Office of Basic Energy Sciences, via Grant DE-FG0203ER46053. E.Q. and M.L. acknowledge support by the U.S. Department of Energy, Office of Science, Basic Energy Sciences under Award #DE-SC0020321 . A. P. S. was funded by an Integrated University Program Graduate Fellowship. This research at ORNL's Spallation Neutron Source was sponsored by the Scientific User Facilities Division, Office of Basic Energy Sciences, US Department of Energy. The results presented here are based on a UMAT experiment, which was performed at the X0-beamline of the UNILAC at the GSI Helmholtz Zentrum f{\"u}r Schwerionenforschung, Darmstadt (Germany) in the frame of FAIR Phase-0. Funding Information: M.N. and H.G. appreciate the financial support of the National Natural Science Foundation of China (No. 11905166, 12205354). A.N. and K.J. acknowledge the support of the U.S. Department of Energy, Office of Basic Energy Sciences, via Grant DE-FG0203ER46053. E.Q. and M.L. acknowledge support by the U.S. Department of Energy, Office of Science, Basic Energy Sciences under Award #DE-SC0020321. A. P. S. was funded by an Integrated University Program Graduate Fellowship. This research at ORNL's Spallation Neutron Source was sponsored by the Scientific User Facilities Division, Office of Basic Energy Sciences, US Department of Energy. The results presented here are based on a UMAT experiment, which was performed at the X0-beamline of the UNILAC at the GSI Helmholtz Zentrum f{\"u}r Schwerionenforschung, Darmstadt (Germany) in the frame of FAIR Phase-0. This manuscript has been authored by UT-Battelle, LLC under Contract No. DEAC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (hxxp://energy.gov/downloads/doe-public-access-plan). Publisher Copyright: {\textcopyright} 2022",
year = "2023",
month = jan,
day = "1",
doi = "10.1016/j.actamat.2022.118475",
language = "English (US)",
volume = "242",
journal = "Acta Materialia",
issn = "1359-6454",
publisher = "Elsevier Limited",
}