Mass loss of Li2TiO3 pebbles and Li 4SiO4 pebbles

Hideaki Kashimura; Masabumi Nishikawa; Kazunari Katayama; Shohei Matsuda; Motoki Shimozori; Satoshi Fukada; Tsuyoshi Hoshino

doi:10.1016/j.fusengdes.2013.05.098

Mass loss of Li₂TiO₃ pebbles and Li ₄SiO₄ pebbles

Hideaki Kashimura, Masabumi Nishikawa, Kazunari Katayama, Shohei Matsuda, Motoki Shimozori, Satoshi Fukada, Tsuyoshi Hoshino

Engineering Science for Advanced energy system

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

13 Citations (Scopus)

Abstract

It has been known that water vapor is released from ceramic breeder materials into the purge gas due to desorption of adsorbed water under dry atmosphere and due to the water formation reaction under hydrogen atmosphere. However, an effect of water vapor in the purge gas to Li mass loss has not been understood. In this study, mass loss of Li₂TiO₃ (NFI) and Li₄SiO₄ (FzK) under hydrogen atmosphere (1000 Pa H ₂/Ar), and mass loss of Li₂TiO₃ (NFI) and Li₂TiO₃ with additional Li which is in a developmental stage (JAEA) under water vapor atmosphere (50 Pa H₂O/Ar) were compared, respectively. It was found that under hydrogen atmosphere Li mass loss of Li₄SiO₄ and Li₂TiO₃ is same degree although the amount of water vapor released from Li₄SiO ₄ is larger than that from Li₂TiO₃. It was clarified with regard to Li₂TiO₃ that Li mass loss in water vapor atmosphere is larger than that in hydrogen atmosphere. Mass loss of Li₂TiO₃ with additional Li (JAEA) was larger than that of Li₂TiO₃ (NFI). It was observed by X-ray analysis that Li deposits formed on the inner wall of the quartz tube contain Li ₂SiO₃.

Original language	English
Pages (from-to)	2202-2205
Number of pages	4
Journal	Fusion Engineering and Design
Volume	88
Issue number	9-10
DOIs	https://doi.org/10.1016/j.fusengdes.2013.05.098
Publication status	Published - Oct 2013

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.2013.05.098

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title = "Mass loss of Li2TiO3 pebbles and Li 4SiO4 pebbles",

abstract = "It has been known that water vapor is released from ceramic breeder materials into the purge gas due to desorption of adsorbed water under dry atmosphere and due to the water formation reaction under hydrogen atmosphere. However, an effect of water vapor in the purge gas to Li mass loss has not been understood. In this study, mass loss of Li2TiO3 (NFI) and Li4SiO4 (FzK) under hydrogen atmosphere (1000 Pa H 2/Ar), and mass loss of Li2TiO3 (NFI) and Li2TiO3 with additional Li which is in a developmental stage (JAEA) under water vapor atmosphere (50 Pa H2O/Ar) were compared, respectively. It was found that under hydrogen atmosphere Li mass loss of Li4SiO4 and Li2TiO3 is same degree although the amount of water vapor released from Li4SiO 4 is larger than that from Li2TiO3. It was clarified with regard to Li2TiO3 that Li mass loss in water vapor atmosphere is larger than that in hydrogen atmosphere. Mass loss of Li2TiO3 with additional Li (JAEA) was larger than that of Li2TiO3 (NFI). It was observed by X-ray analysis that Li deposits formed on the inner wall of the quartz tube contain Li 2SiO3.",

author = "Hideaki Kashimura and Masabumi Nishikawa and Kazunari Katayama and Shohei Matsuda and Motoki Shimozori and Satoshi Fukada and Tsuyoshi Hoshino",

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AU - Kashimura, Hideaki

AU - Nishikawa, Masabumi

AU - Katayama, Kazunari

AU - Matsuda, Shohei

AU - Shimozori, Motoki

AU - Fukada, Satoshi

AU - Hoshino, Tsuyoshi

PY - 2013/10

Y1 - 2013/10

N2 - It has been known that water vapor is released from ceramic breeder materials into the purge gas due to desorption of adsorbed water under dry atmosphere and due to the water formation reaction under hydrogen atmosphere. However, an effect of water vapor in the purge gas to Li mass loss has not been understood. In this study, mass loss of Li2TiO3 (NFI) and Li4SiO4 (FzK) under hydrogen atmosphere (1000 Pa H 2/Ar), and mass loss of Li2TiO3 (NFI) and Li2TiO3 with additional Li which is in a developmental stage (JAEA) under water vapor atmosphere (50 Pa H2O/Ar) were compared, respectively. It was found that under hydrogen atmosphere Li mass loss of Li4SiO4 and Li2TiO3 is same degree although the amount of water vapor released from Li4SiO 4 is larger than that from Li2TiO3. It was clarified with regard to Li2TiO3 that Li mass loss in water vapor atmosphere is larger than that in hydrogen atmosphere. Mass loss of Li2TiO3 with additional Li (JAEA) was larger than that of Li2TiO3 (NFI). It was observed by X-ray analysis that Li deposits formed on the inner wall of the quartz tube contain Li 2SiO3.

AB - It has been known that water vapor is released from ceramic breeder materials into the purge gas due to desorption of adsorbed water under dry atmosphere and due to the water formation reaction under hydrogen atmosphere. However, an effect of water vapor in the purge gas to Li mass loss has not been understood. In this study, mass loss of Li2TiO3 (NFI) and Li4SiO4 (FzK) under hydrogen atmosphere (1000 Pa H 2/Ar), and mass loss of Li2TiO3 (NFI) and Li2TiO3 with additional Li which is in a developmental stage (JAEA) under water vapor atmosphere (50 Pa H2O/Ar) were compared, respectively. It was found that under hydrogen atmosphere Li mass loss of Li4SiO4 and Li2TiO3 is same degree although the amount of water vapor released from Li4SiO 4 is larger than that from Li2TiO3. It was clarified with regard to Li2TiO3 that Li mass loss in water vapor atmosphere is larger than that in hydrogen atmosphere. Mass loss of Li2TiO3 with additional Li (JAEA) was larger than that of Li2TiO3 (NFI). It was observed by X-ray analysis that Li deposits formed on the inner wall of the quartz tube contain Li 2SiO3.

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Mass loss of Li₂TiO₃ pebbles and Li ₄SiO₄ pebbles

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