Release behavior of water vapor and mass loss from lithium titanate

Kazunari Katayama; Hideaki Kashimura; Tsuyoshi Hoshino; Masabumi Nishikawa; Hideki Yamasaki; Shinichiro Ishikawa; Yasuhito Ohnishi; Satoshi Fukada

doi:10.1016/j.fusengdes.2012.02.050

Release behavior of water vapor and mass loss from lithium titanate

Kazunari Katayama, Hideaki Kashimura, Tsuyoshi Hoshino, Masabumi Nishikawa, Hideki Yamasaki, Shinichiro Ishikawa, Yasuhito Ohnishi, Satoshi Fukada

Engineering Science for Advanced energy system

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

16 Citations (Scopus)

Abstract

The release behavior of tritium generated by neutron irradiation is strongly affected by the surface water of ceramic breeder materials. In the present study, the release behavior of water vapor from Li ₂TiO ₃ with added Li, which is in a developmental stage in JAEA (Japan Atomic Energy Agency) as an advanced tritium breeder materials, was observed at elevated temperatures. The capacity of chemical adsorbed water in nitrogen atmosphere and the water formation capacity in hydrogen atmosphere were quantified, respectively. The mass loss of the Li ₂TiO ₃ due to evaporation of Li-containing species at 900 °C in 10,000 ppmH ₂/N ₂ was estimated to be 1.8% of initial sample weight. The majority of evaporated Li adhered to a quartz tube around the sample bed. It was shown experimentally that the mass loss in water vapor atmosphere is larger than that in hydrogen atmosphere.

Original language	English
Pages (from-to)	927-931
Number of pages	5
Journal	Fusion Engineering and Design
Volume	87
Issue number	5-6
DOIs	https://doi.org/10.1016/j.fusengdes.2012.02.050
Publication status	Published - Aug 2012

All Science Journal Classification (ASJC) codes

Civil and Structural Engineering
Nuclear Energy and Engineering
Materials Science(all)
Mechanical Engineering

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10.1016/j.fusengdes.2012.02.050

Cite this

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title = "Release behavior of water vapor and mass loss from lithium titanate",

abstract = "The release behavior of tritium generated by neutron irradiation is strongly affected by the surface water of ceramic breeder materials. In the present study, the release behavior of water vapor from Li 2TiO 3 with added Li, which is in a developmental stage in JAEA (Japan Atomic Energy Agency) as an advanced tritium breeder materials, was observed at elevated temperatures. The capacity of chemical adsorbed water in nitrogen atmosphere and the water formation capacity in hydrogen atmosphere were quantified, respectively. The mass loss of the Li 2TiO 3 due to evaporation of Li-containing species at 900 °C in 10,000 ppmH 2/N 2 was estimated to be 1.8% of initial sample weight. The majority of evaporated Li adhered to a quartz tube around the sample bed. It was shown experimentally that the mass loss in water vapor atmosphere is larger than that in hydrogen atmosphere.",

author = "Kazunari Katayama and Hideaki Kashimura and Tsuyoshi Hoshino and Masabumi Nishikawa and Hideki Yamasaki and Shinichiro Ishikawa and Yasuhito Ohnishi and Satoshi Fukada",

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AU - Katayama, Kazunari

AU - Kashimura, Hideaki

AU - Hoshino, Tsuyoshi

AU - Nishikawa, Masabumi

AU - Yamasaki, Hideki

AU - Ishikawa, Shinichiro

AU - Ohnishi, Yasuhito

AU - Fukada, Satoshi

PY - 2012/8

Y1 - 2012/8

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AB - The release behavior of tritium generated by neutron irradiation is strongly affected by the surface water of ceramic breeder materials. In the present study, the release behavior of water vapor from Li 2TiO 3 with added Li, which is in a developmental stage in JAEA (Japan Atomic Energy Agency) as an advanced tritium breeder materials, was observed at elevated temperatures. The capacity of chemical adsorbed water in nitrogen atmosphere and the water formation capacity in hydrogen atmosphere were quantified, respectively. The mass loss of the Li 2TiO 3 due to evaporation of Li-containing species at 900 °C in 10,000 ppmH 2/N 2 was estimated to be 1.8% of initial sample weight. The majority of evaporated Li adhered to a quartz tube around the sample bed. It was shown experimentally that the mass loss in water vapor atmosphere is larger than that in hydrogen atmosphere.

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ER -

Release behavior of water vapor and mass loss from lithium titanate

Abstract

All Science Journal Classification (ASJC) codes

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