Improved high temperature radiation damage tolerance in a three-phase ceramic with heterointerfaces
- Univ. of California, Irvine, CA (United States). Dept. of Chemical Engineering & Materials Science
- Univ. of Liverpool (United Kingdom). Dept. of Mechanical, Materials & Aerospace Engineering; Univ. of Tennessee, Knoxville, TN (United States). Dept. of Materials Science and Engineering
- Univ. of Tennessee, Knoxville, TN (United States). Dept. of Materials Science and Engineering. Ion Beam Materials Lab.
- Univ. of California, San Diego, CA (United States). Dept. of Mechanical and Aerospace Engineering
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.
- Research Organization:
- Univ. of California, Irvine, CA (United States)
- Sponsoring Organization:
- USDOE Office of Nuclear Energy (NE); National Science Foundation (NSF)
- Grant/Contract Number:
- NE0000711; DMR 1611457
- OSTI ID:
- 1469740
- Alternate ID(s):
- OSTI ID: 1499998
- Journal Information:
- Scientific Reports, Vol. 8; ISSN 2045-2322
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Different Radiation Tolerances of Ultrafine-Grained Zirconia–Magnesia Composite Ceramics with Different Grain Sizes
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journal | August 2019 |
Different Radiation Tolerances of Ultrafine-Grained Zirconia–Magnesia Composite Ceramics with Different Grain Sizes
|
journal | August 2019 |
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