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

Journal Article · · Scientific Reports

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 2 O 3 ) is significantly reduced when Al 2 O 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.

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, Journal Name: Scientific Reports Vol. 8 Journal Issue: 1; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United Kingdom
Language:
English
Citation Metrics:
Cited by: 11 works
Citation information provided by
Web of Science

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Figures / Tables (4)


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