書誌事項
- タイトル別名
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- Microstructure and Critical Current Densities of Bi-2223 Superconductor Solidified in High Magnetic Fields
- 磁場中凝固したBi-2223超伝導材料の組織とJc特性
- ジバ チュウ ギョウコ シタ Bi 2223 チョウデンドウ ザイリョウ ノ ソシキ ト Jc トクセイ
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The microstructure and critical current densities of Bi-2223 superconductor with Ag2O and MgO additions after partial-melting and solidification in high magnetic fields were investigated. It has been found that the Bi-2212 grains with their c-axis parallel to the magnetic field are formed after partial-melting and solidification in 8 T magnetic field, and transform into the Bi-2223 grains with c-axis alignment during the further sintering process at 1113 K in zero magnetic field. The optimum partial-melting temperatures Tmax of non-added, 5 mass%Ag2O and 5 mass%MgO added samples are 1147 K, 1143 K and 1153 K, respectively. 5 mass%Ag2O and 5 mass%MgO additions enhance the c-axis alignment of (Bi, Pb)-2223 phase. The largest Jc value appears in the 5 mass%MgO added sample with Tmax=1153 K. MgO particles homogeneously disperse in the oriented (Bi, Pb)-2223 platelets. The MgO added sample has small non-superconducting second phase particles, whereas the Ag2O added sample has large second phase particles.
収録刊行物
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- 日本金属学会誌
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日本金属学会誌 66 (4), 254-259, 2002
公益社団法人 日本金属学会
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詳細情報 詳細情報について
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- CRID
- 1390282681468745216
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- NII論文ID
- 130007342468
- 10008832392
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- NII書誌ID
- AN00187860
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- ISSN
- 18806880
- 24337501
- 00214876
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- NDL書誌ID
- 6151361
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- データソース種別
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- JaLC
- NDL
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- 使用不可