Superior radiation tolerant materials: Amorphous silicon oxycarbide
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2015 Elsevier B.V. All rights reserved. We studied the radiation tolerance of amorphous silicon oxycarbide (SiOC) alloys by combining ion irradiation, X-ray diffraction (XRD) and transmission electron microscopy (TEM). The amorphous SiOC alloys thin films were grown via co-sputtering from SiO 2 and SiC (amorphous phase) targets either on a surface oxidized Si (100) substrate or on a sodium chloride substrate. By controlling the sputtering rate of each target, SiOC alloys with different compositions (1:2, 1:1, 2:1 ratios) were obtained. These alloys were irradiated by 100 keV He + ions at both room temperature and 600 C with damage levels ranging from 1 to 20 displacements per atom (dpa). TEM characterization shows no sign of crystallization, void formation or segregation in all irradiated samples. Our findings suggest that SiOC alloys are a class of promising radiation-tolerant materials.
Journal of Nuclear Materials
author list (cited authors)
Nastasi, M., Su, Q., Price, L., Coln Santana, J. A., Chen, T., Balerio, R., & Shao, L.
complete list of authors
Nastasi, Michael||Su, Qing||Price, Lloyd||Colón Santana, Juan A||Chen, Tianyi||Balerio, Robert||Shao, Lin