書誌事項
- タイトル別名
-
- Recent Developments and Future Prospect of MgB2 Wires and Tapes
- MgB2 チョウデンドウ センザイ ノ カイハツ ト ショウライ テンボウ
この論文をさがす
抄録
MgB2 wires are now fabricated by two (in situ and ex situ) powder-in-tube (PIT) methods. The superconducting properties of PIT-processed MgB2 wires are sensitive to the quality of the starting powder in both methods, the heat-treatment temperature, the porosity of the MgB2 core, and impurity additions. In the case of the in situ method, a sub-micrometer Mg starting powder is quite effective for enhancing Jc. Some kinds of carbon compound additions to the starting powder introduce a carbon substitution for boron in MgB2 crystal and enhance both Bc2 and Jc in high magnetic fields. In general, ex situ-processed MgB2 wires show lower Jc than in situ-processed wires. The key factor to obtain a high Jc for an ex situ tape is also the high quality of the MgB2 starting powder. Recently, we succeeded in the fabrication of high Jc ex situ MgB2/Fe wires using MgB2 cores removed from in situ MgB2 wires. Al-sheathed ex situ-processed wires are interesting due to their light weight and the high thermal stability of conductor. At the present stage, however, Jc values of MgB2 wires are still below a practical level. Further improvement of the processing of MgB2 wires is essential in order to obtain a practical level of Jc values.<br>
収録刊行物
-
- 日本金属学会誌
-
日本金属学会誌 71 (11), 928-933, 2007
公益社団法人 日本金属学会
- Tweet
詳細情報 詳細情報について
-
- CRID
- 1390282681455905152
-
- NII論文ID
- 10019788687
-
- NII書誌ID
- AN00187860
-
- ISSN
- 18806880
- 24337501
- 00214876
-
- NDL書誌ID
- 9263037
-
- 本文言語コード
- ja
-
- データソース種別
-
- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
-
- 抄録ライセンスフラグ
- 使用不可