Effect of Heating Atomosphere on Segregation and Dissolution of the Pb-compound in the Bi-2223 Phase.
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- Kusano Yoshihiro
- Faculty of Engineering, Okayama University
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- Nanba Tokuro
- Faculty of Engineering, Okayama University
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- Takada Jun
- Faculty of Engineering, Okayama University
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- Ikeda Yasunori
- Institute for Chemical Research, Kyoto University
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- Takano Mikio
- Institute for Chemical Research, Kyoto University
Bibliographic Information
- Other Title
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- Bi‐2223相におけるPb化合物の析出・再固溶におよぼす雰囲気の影響
- Bi 2223ソウ ニ オケル Pb カゴウブツ ノ セキシュツ サイ コヨウ
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Abstract
Thermal behavior of the Bi-2223 phase in the Bi, Pb-Sr-Ca-Cu-O system, especially segregation and dissolution reaction of the "3321" phase which was identified as Sr2.5Bi0.5Pb3Ca2CuO2, has been studied by XRD, SQUID and resistivity measurements. On annealing below 830°C in air, the "3321" phase precipitated from the 2223 crystals. When the 2223 phase was annealed at 750°C in O2stream, the precipitation of the "3321 " phase increased. On annealing at 750°C in Ar stream, however, no precipitation of the "3321" phase was detected. By reheateing at 850°C even for 1min, the "3321" phase was almost dissolved into the mother 2223 crystals. When the 2223 phase was reheated at 750°C in Ar stream after annealing at 750°C in air, the "3321 " phase disappeared. On the contrary, the "3321" phase was stable on reheating at 870°C in O2 stream. Therefore, it seems that the "3321" and the 2223 phase coexist in epuilibrium in a high oxygen partial pressure.
Journal
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- Journal of the Japan Society of Powder and Powder Metallurgy
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Journal of the Japan Society of Powder and Powder Metallurgy 41 (4), 388-391, 1994
Japan Society of Powder and Powder Metallurgy
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Keywords
Details 詳細情報について
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- CRID
- 1390282681285757952
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- NII Article ID
- 130000819544
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- NII Book ID
- AN00222724
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- ISSN
- 18809014
- 05328799
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- NDL BIB ID
- 3878302
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed