Revealing irradiation damage along with the entire damage range in ion-irradiated SiC/SiC composites using Raman spectroscopy
Abstract
We present that incorporating Raman spectroscopy with transverse lift-out specimens is demonstrated to effectively characterize depth-dependent ion-irradiation damage in nuclear ceramics, such as SiC/SiC composites irradiated up to 1, 10 and 50 displacements per atom (dpa) at 350 °C using 10 MeV Au ions. Raman spectroscopy reveals irradiation-induced structural disorder saturation in both SiC-fiber and SiC-matrix at doses as low as 1 dpa, despite vastly different microstructures, inferred from similar longitudinal optical (LO) and transverse optical (TO) phonon peak shifts. Diamond (D) and graphitic (G) peaks from SiC-fibers disappear under irradiation, revealing irradiation-induced carbon packet loss. The irradiation-induced carbon packet loss is also verified by conducting TEM on same FIB foils used for Raman spectroscopy. In a previous study, the irradiation-induced SiC-fiber shrinkage is known to occur due to carbon packet loss in fibers.
- Authors:
-
- Univ. of Tennessee, Knoxville, TN (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Nuclear Energy (NE)
- OSTI Identifier:
- 1561673
- Alternate Identifier(s):
- OSTI ID: 1562780
- Grant/Contract Number:
- AC05-00OR22725; NE0008577
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Nuclear Materials
- Additional Journal Information:
- Journal Volume: 526; Journal Issue: C; Journal ID: ISSN 0022-3115
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; Irradiation damage; Carbon loss; Structural disorder; SiC/SiC composites; Raman spectroscopy
Citation Formats
Agarwal, Shradha, Chen, Q., Koyanagi, Takaaki, Zhao, Yajie, Zinkle, Steven J., and Weber, William J. Revealing irradiation damage along with the entire damage range in ion-irradiated SiC/SiC composites using Raman spectroscopy. United States: N. p., 2019.
Web. doi:10.1016/j.jnucmat.2019.151778.
Agarwal, Shradha, Chen, Q., Koyanagi, Takaaki, Zhao, Yajie, Zinkle, Steven J., & Weber, William J. Revealing irradiation damage along with the entire damage range in ion-irradiated SiC/SiC composites using Raman spectroscopy. United States. https://doi.org/10.1016/j.jnucmat.2019.151778
Agarwal, Shradha, Chen, Q., Koyanagi, Takaaki, Zhao, Yajie, Zinkle, Steven J., and Weber, William J. Fri .
"Revealing irradiation damage along with the entire damage range in ion-irradiated SiC/SiC composites using Raman spectroscopy". United States. https://doi.org/10.1016/j.jnucmat.2019.151778. https://www.osti.gov/servlets/purl/1561673.
@article{osti_1561673,
title = {Revealing irradiation damage along with the entire damage range in ion-irradiated SiC/SiC composites using Raman spectroscopy},
author = {Agarwal, Shradha and Chen, Q. and Koyanagi, Takaaki and Zhao, Yajie and Zinkle, Steven J. and Weber, William J.},
abstractNote = {We present that incorporating Raman spectroscopy with transverse lift-out specimens is demonstrated to effectively characterize depth-dependent ion-irradiation damage in nuclear ceramics, such as SiC/SiC composites irradiated up to 1, 10 and 50 displacements per atom (dpa) at 350 °C using 10 MeV Au ions. Raman spectroscopy reveals irradiation-induced structural disorder saturation in both SiC-fiber and SiC-matrix at doses as low as 1 dpa, despite vastly different microstructures, inferred from similar longitudinal optical (LO) and transverse optical (TO) phonon peak shifts. Diamond (D) and graphitic (G) peaks from SiC-fibers disappear under irradiation, revealing irradiation-induced carbon packet loss. The irradiation-induced carbon packet loss is also verified by conducting TEM on same FIB foils used for Raman spectroscopy. In a previous study, the irradiation-induced SiC-fiber shrinkage is known to occur due to carbon packet loss in fibers.},
doi = {10.1016/j.jnucmat.2019.151778},
journal = {Journal of Nuclear Materials},
number = C,
volume = 526,
place = {United States},
year = {Fri Aug 30 00:00:00 EDT 2019},
month = {Fri Aug 30 00:00:00 EDT 2019}
}
Web of Science