Response of Isotopically Tailored Titanium Diboride to Neutron Irradiation

Abstract

The response of polycrystalline TiB2 to neutron irradiation was investigated. The material was fabricated using isotopically enriched 11B powders to minimize helium production via the 10B(n, α)7Li reaction. Neutron irradiation was conducted at temperatures of ~200°C and ~600°C to a fast fluence of 2.4 x 1025n/m2 ( > 0.1 MeV). The material exhibited some swelling, but less swelling at the higher irradiation temperature. No macroscopic damage was observed in the irradiated material, although moderate irradiation-induced micro-cracking was found in the irradiated TiB2. This study demonstrated improved radiation resistance of isotopically tailored TiB2 compared with natural boron TiB2, which exhibited macroscopic fracture by irradiation.

Department(s)

Materials Science and Engineering

Keywords and Phrases

Boron Compounds; Neutrons; Radiation; Titanium; Titanium Compounds, Helium Production; Irradiated Materials; Irradiation Temperature; Isotopically Enriched; Macroscopic Damage; Macroscopic Fractures; Radiation Resistance; Titanium Diboride, Neutron Irradiation

International Standard Serial Number (ISSN)

0002-7820; 1551-2916

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2018 American Ceramic Society, All rights reserved.

Publication Date

01 Jan 2020

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