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j.issn.1674-3962.2013.09.02]
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新型鐵基超導(dǎo)線帶材的研究進(jìn)展()

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中國(guó)材料進(jìn)展[ISSN:1674-3962/CN:61-1473/TG]

卷:
期數(shù):: 2013年第9期

頁(yè)碼:: 522-532

欄目:: 特約研究論文

出版日期:: 2013-09-30

文章信息/Info

Title:: Recent advances in iron-based superconducting wires and tapes

作者:: 林鶴; 馬衍偉; (中國(guó)科學(xué)院電工研究所應(yīng)用超導(dǎo)重點(diǎn)實(shí)驗(yàn)室,北京100190)

Author(s):: LIN He; MA Yanwei; (Key Laboratory of Applied Superconductivity, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190China)

關(guān)鍵詞:: 鐵基超導(dǎo)材料; 線帶材; 粉末裝管法; 制備工藝; 臨界電流密度

分類號(hào):: TM262

DOI:: 10.7502/j.issn.1674-3962.2013.09.02

文獻(xiàn)標(biāo)志碼:: A

摘要:: 新型鐵基超導(dǎo)材料具有較高的臨界轉(zhuǎn)變溫度、超高的上臨界場(chǎng)和非常小的各向異性等優(yōu)點(diǎn)，在高場(chǎng)磁體領(lǐng)域應(yīng)用前景廣闊。目前粉末裝管法已廣泛應(yīng)用于鐵基超導(dǎo)線帶材的制備，臨界電流密度在4.2 K和10 T下高達(dá)1.7×104A/cm2, 接近實(shí)用化水平。本文首先介紹了鐵基超導(dǎo)材料的典型結(jié)構(gòu)與基本超導(dǎo)特性。接著詳細(xì)評(píng)述了鐵基超導(dǎo)粉末的合成和粉末裝管法的工藝流程，主要包括元素配比、熱處理工藝、以及粉末裝管原位法和先位法的對(duì)比分析。然后重點(diǎn)探討了影響線帶材臨界電流密度的因素及其關(guān)鍵制備技術(shù)。通過(guò)包套材料的選擇、摻雜改性、熱等靜壓和軋制織構(gòu)等方法來(lái)解決線帶材中包套與超導(dǎo)芯易反應(yīng)、雜相多、致密度低以及晶界弱連接等難題。此外還簡(jiǎn)要介紹了多芯線帶材的最新研究進(jìn)展。最后，對(duì)鐵基超導(dǎo)線帶材的發(fā)展趨勢(shì)做了展望。

Abstract:: The newly discovered iron-based superconductors have caused great interest for high-field applications due to their well properties such as high transition temperature, ultrahigh upper critical field and low anisotropy. The iron-based superconducting wires and tapes are commonly prepared by the powder-in-tube (PIT) process. In this paper, we focus on the fabrication techniques to realize high Jc values such as chemical composition, optimal heating conditions, sheath material, doped elements, hot isostatic press and rolling texture，particularly for 122-type pnictide wires and tapes. Excitingly, so far high transport Jc value of 1.7×104 A/cm2 at 4.2 K and 10 T has been obtained in iron-based tapes, closed to the practical level. Finally, a perspective and future development of PIT pnictide wires and tapes are given

參考文獻(xiàn)/References:

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更新日期/Last Update: 2013-10-10