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Title: Improved high temperature radiation damage tolerance in a three-phase ceramic with heterointerfaces

Abstract

Radiation damage tolerance for a variety of ceramics at high temperatures depends on the material’s resistance to nucleation and growth of extended defects. Such processes are prevalent in ceramics employed for space, nuclear fission/fusion and nuclear waste environments. This report shows that random heterointerfaces in materials with sub-micron grains can act as highly efficient sinks for point defects compared to grain boundaries in single-phase materials. The concentration of dislocation loops in a radiation damage-prone phase (Al 2O 3) is significantly reduced when Al 2O 3 is a component of a composite system as opposed to a single-phase system. These results present a novel method for designing exceptionally radiation damage tolerant ceramics at high temperatures with a stable grain size, without requiring extensive interfacial engineering or production of nanocrystalline materials.

Authors:
 [1];  [2];  [3];  [4];  [3]; ORCiD logo [4];  [1]
  1. Univ. of California, Irvine, CA (United States). Dept. of Chemical Engineering & Materials Science
  2. Univ. of Liverpool (United Kingdom). Dept. of Mechanical, Materials & Aerospace Engineering; Univ. of Tennessee, Knoxville, TN (United States). Dept. of Materials Science and Engineering
  3. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Materials Science and Engineering. Ion Beam Materials Lab.
  4. Univ. of California, San Diego, CA (United States). Dept. of Mechanical and Aerospace Engineering
Publication Date:
Research Org.:
Univ. of California, Irvine, CA (United States)
Sponsoring Org.:
USDOE Office of Nuclear Energy (NE); National Science Foundation (NSF)
OSTI Identifier:
1469740
Alternate Identifier(s):
OSTI ID: 1499998
Grant/Contract Number:  
NE0000711; DMR 1611457
Resource Type:
Journal Article: Published Article
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 8; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ceramics; composites

Citation Formats

Ohtaki, Kenta K., Patel, Maulik K., Crespillo, Miguel L., Karandikar, Keyur K., Zhang, Yanwen, Graeve, Olivia A., and Mecartney, Martha L. Improved high temperature radiation damage tolerance in a three-phase ceramic with heterointerfaces. United States: N. p., 2018. Web. doi:10.1038/s41598-018-31721-x.
Ohtaki, Kenta K., Patel, Maulik K., Crespillo, Miguel L., Karandikar, Keyur K., Zhang, Yanwen, Graeve, Olivia A., & Mecartney, Martha L. Improved high temperature radiation damage tolerance in a three-phase ceramic with heterointerfaces. United States. doi:10.1038/s41598-018-31721-x.
Ohtaki, Kenta K., Patel, Maulik K., Crespillo, Miguel L., Karandikar, Keyur K., Zhang, Yanwen, Graeve, Olivia A., and Mecartney, Martha L. Tue . "Improved high temperature radiation damage tolerance in a three-phase ceramic with heterointerfaces". United States. doi:10.1038/s41598-018-31721-x.
@article{osti_1469740,
title = {Improved high temperature radiation damage tolerance in a three-phase ceramic with heterointerfaces},
author = {Ohtaki, Kenta K. and Patel, Maulik K. and Crespillo, Miguel L. and Karandikar, Keyur K. and Zhang, Yanwen and Graeve, Olivia A. and Mecartney, Martha L.},
abstractNote = {Radiation damage tolerance for a variety of ceramics at high temperatures depends on the material’s resistance to nucleation and growth of extended defects. Such processes are prevalent in ceramics employed for space, nuclear fission/fusion and nuclear waste environments. This report shows that random heterointerfaces in materials with sub-micron grains can act as highly efficient sinks for point defects compared to grain boundaries in single-phase materials. The concentration of dislocation loops in a radiation damage-prone phase (Al2O3) is significantly reduced when Al2O3 is a component of a composite system as opposed to a single-phase system. These results present a novel method for designing exceptionally radiation damage tolerant ceramics at high temperatures with a stable grain size, without requiring extensive interfacial engineering or production of nanocrystalline materials.},
doi = {10.1038/s41598-018-31721-x},
journal = {Scientific Reports},
issn = {2045-2322},
number = ,
volume = 8,
place = {United States},
year = {2018},
month = {9}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1038/s41598-018-31721-x

Figures / Tables:

Figure 1 Figure 1: Cross section TEM bright field images of irradiated single crystals of YSZ, MgAl2O4 and Al2O3 from top surface to irradiated interior with Stopping and Range of Ions in Matter (SRIM) calculation29. SRIM calculations predict that the damage peak lies at ~1.6 μm from the irradiated surface and themore » damage depth is ~2 μm. Even though MgAl2O4 is known to be sensitive to ionizing and displacive irradiation spectra, only a small amount of dislocation loops was observed in this study. This must be due to ionizing radiation effect with high electronic to nuclear stopping power ratio whose influence becomes more significant for light elements18.« less

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Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.