Enhancement of J cB properties for binary and carbon-doped MgB 2tapes by hot pressing

Dongliang Wang, Chengduo Wang, Xianping Zhang, Zhaoshun Gao, Chao Yao, Yanwei Ma, Masaya Kanazawa, Yutaka Yamada, Hidetoshi Oguro, Satoshi Awaji, Kazuo Watanabe

研究成果: Article査読

17 被引用数 (Scopus)

抄録

The effect of the hot pressing method on in situ powder-in-tube-processed MgB 2/Fe tapes was studied. The tapes doped with and without nanosized C are hot-pressed at 100MPa and 650800°C for 15h in a flowing Ar gas atmosphere. Compared to the non-hot-pressed tapes, the J cB property (at 4.2K and 10T) of pure and C-doped samples hot-pressed at 650°C for 5h was enhanced by a factor of 2.5 and 1.4, respectively. For hot-pressed tapes, the optimized sintering temperature is below 700°C at 100MPa. The enhancement of J c performance for hot-pressed MgB 2 samples is mainly attributed to the improved grain connectivity.

本文言語English
論文番号065013
ジャーナルSuperconductor Science and Technology
25
6
DOI
出版ステータスPublished - 2012 6月 1

ASJC Scopus subject areas

  • セラミックおよび複合材料
  • 凝縮系物理学
  • 金属および合金
  • 電子工学および電気工学
  • 材料化学

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