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

Ohtaki, Kenta K, Patel, Maulik K ORCID: 0000-0002-3214-5752, Crespillo, Miguel L, Karandikar, Keyur K, Zhang, Yanwen, Graeve, Olivia A and Mecartney, Martha L (2018) Improved high temperature radiation damage tolerance in a three-phase ceramic with heterointerfaces. SCIENTIFIC REPORTS, 8 (1). 13993-.

Text Manuscript for scientific reports final version with figures 08242018.docx - Author Accepted Manuscript Download (9MB)

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 (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.

Item Type:	Article
Depositing User:	Symplectic Admin
Date Deposited:	28 Aug 2018 06:52
Last Modified:	19 Jan 2023 01:26
DOI:	10.1038/s41598-018-31721-x
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3025624