| Project/Area Number |
63850144
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| Research Category |
Grant-in-Aid for Developmental Scientific Research
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| Allocation Type | Single-year Grants |
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| Research Field |
金属精錬・金属化学
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| Research Institution | Niigata University |
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Principal Investigator |
TAMAKI Shigeru Niigata University, Faculty of Science, Professor, 理学部, 教授 (80018259)
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| Co-Investigator(Kenkyū-buntansha) |
曽我 幸三 日本特殊陶業KK, 研究部, 研究員
IIZIMA Shigeru Nippon Tokushu Togyo KK, Chief Researcher, 研究部, 主査補
TAKEDA Shin-ichi Kyushu University, General Education Department, Associate Professor, 教養部, 助教授 (10111733)
HARADA Shuzi Niigata University, Faculty of Engineering, Associate Professor, 工学部, 助教授 (80134956)
OKAZAKI Hideo Niigata University, General Education Department, Professor, 教養部, 教授 (60018265)
SOGA Kozo Nippon Tokushu Togyo KK, Researcher
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| Project Period (FY) |
1987 – 1989
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| Project Status |
Completed (Fiscal Year 1989)
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| Budget Amount *help |
¥3,200,000 (Direct Cost: ¥3,200,000)
Fiscal Year 1989: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1988: ¥2,500,000 (Direct Cost: ¥2,500,000)
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| Keywords | New Deviced Materials / Superionic Conductor / Ga-beta-alumina / Na-beta-alumina / ガリウムベ-タアルミナ作成 / Gaーβーアルミナ / Naーβーアルミナ / クーロン滴定 / βアルミナにおけるイオン交換 |
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| Research Abstract |
In order to make a deviced material, the Ga-beta-alumina, the Coulomb titration has been carried out for Na-beta-aiumina which is well-known as one of superionic conductors. The cell for the titration is (+)|GaCl_2(L)+Ga(L)|Na-beta-alumina|GaCl_2(L)|(-). The best conditions for titration were 210ﾟC and the electric voltage less than 2 V, respectively. A continuous current was supplied for more than 100 hours. The fully exchange from Na to Ga was recognized by the measurements of X-ray absorption spectra.
The newly deviced material, Ga-beta-alumina has basically a hexagonal structure including spinel block. The fundamental length in the c-axis was increased from 22.512 (A) to 22.735 (A), while that in the a-axis was not varied with the exchange procedure.
Thermodynamic properties of liquid Na-In and Na-Bi were also measured by using the Na-beta-alumina.
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