Effects of neutron irradiation on the properties of functional materials for fusion applications: Role of hydrogen in radiation effects on oxide ceramics

Tatsuo Shikama; Bun Tsuchiya; Eric R. Hodgson

doi:10.1016/j.jnucmat.2007.03.231

Effects of neutron irradiation on the properties of functional materials for fusion applications: Role of hydrogen in radiation effects on oxide ceramics

Tatsuo Shikama, Bun Tsuchiya, Eric R. Hodgson

Institute for Materials Research (IMR)

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

Effects of hydrogen (proton) in the electrical conductivity of ceramics were studied, with protonic conductive perovskite-oxides. Large electrical conductivity was observed at elevated temperatures under fission reactor irradiation, which could be explained by the contribution of protonic conduction. At elevated temperatures, existence of high concentration hydrogen (proton) will increase the ionic conductivity. Reduction of ions constituting the oxides was observed in electron irradiation as well as 14 MeV neutron irradiation at room temperature, which will result in radiation induced phase changes. The results imply that role of hydrogen in radiation effects in oxide ceramics is important, which may evoke technological problems in fusion machines.

Original language	English
Pages (from-to)	995-1002
Number of pages	8
Journal	Journal of Nuclear Materials
Volume	367-370 B
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.jnucmat.2007.03.231
Publication status	Published - 2007 Aug 1

ASJC Scopus subject areas

Nuclear and High Energy Physics
Materials Science(all)
Nuclear Energy and Engineering

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title = "Effects of neutron irradiation on the properties of functional materials for fusion applications: Role of hydrogen in radiation effects on oxide ceramics",

abstract = "Effects of hydrogen (proton) in the electrical conductivity of ceramics were studied, with protonic conductive perovskite-oxides. Large electrical conductivity was observed at elevated temperatures under fission reactor irradiation, which could be explained by the contribution of protonic conduction. At elevated temperatures, existence of high concentration hydrogen (proton) will increase the ionic conductivity. Reduction of ions constituting the oxides was observed in electron irradiation as well as 14 MeV neutron irradiation at room temperature, which will result in radiation induced phase changes. The results imply that role of hydrogen in radiation effects in oxide ceramics is important, which may evoke technological problems in fusion machines.",

author = "Tatsuo Shikama and Bun Tsuchiya and Hodgson, {Eric R.}",

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AU - Shikama, Tatsuo

AU - Tsuchiya, Bun

AU - Hodgson, Eric R.

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AB - Effects of hydrogen (proton) in the electrical conductivity of ceramics were studied, with protonic conductive perovskite-oxides. Large electrical conductivity was observed at elevated temperatures under fission reactor irradiation, which could be explained by the contribution of protonic conduction. At elevated temperatures, existence of high concentration hydrogen (proton) will increase the ionic conductivity. Reduction of ions constituting the oxides was observed in electron irradiation as well as 14 MeV neutron irradiation at room temperature, which will result in radiation induced phase changes. The results imply that role of hydrogen in radiation effects in oxide ceramics is important, which may evoke technological problems in fusion machines.

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