最新色国产精品精品视频,中文字幕日韩一区二区不卡,亚洲有码转帖,夜夜躁日日躁狠狠久久av,中国凸偷窥xxxx自由视频

+高級檢索
冷卻速率對(Bi,Pb)-2223/Ag超導帶材微觀結構和性能的影響
DOI:
作者:
作者單位:

作者簡介:

通訊作者:

中圖分類號:

基金項目:


Effects of the Cooling Rate on the Microstructure and Properties of (Bi,Pb)-2223/Ag Tapes
Author:
Affiliation:

Fund Project:

  • 摘要
    • |
  • 圖/表
    • |
  • 訪問統(tǒng)計
    • |
  • 參考文獻
    • |
  • 相似文獻
    • |
  • 引證文獻
    • |
  • 資源附件
    • |
  • 文章評論
    摘要:

    研究了(Bi,Pb)-2223/Ag帶材在第1次熱處理后，不同的冷卻速率對其輸運性能和微觀結構的影響。利用XRD、SEM等分析手段對樣品進行表征。結果表明：隨著冷卻速率的降低，帶材中的2201相不斷減少直至消失，而Ca2PbO4相的含量卻不斷增加；與此同時，帶材中第二相粒子的尺寸也不斷增大。帶材的輸運電流測量表明，隨冷卻速率（對數坐標）的降低，樣品的臨界電流密度線性增加，同時，帶材在磁場下的性能也不斷提高。這是由于慢冷導致(Bi,Pb)-2223/Ag帶材的晶粒連接性變好和磁通釘扎能力提高造成的。

    Abstract:

    The influence of cooling rates on the microstructure and transport properties of (Bi,Pb)-2223/Ag tapes after the first heat treatment was investigated. The samples were characterized by XRD and SEM. Results show that the 2201 phases decrease until disappear while Ca2PbO4 increases continuously as the cooling rate decreases; at the same time the size of non-superconducting secondary phase particles become larger. The transport current tests show that the critical current density increases linearly with the cooling rate decreasing logarithmically; meanwhile, the transport current properties of the tapes in the magnetic field increases. This behavior is attributed to improvement of the grain connectivity and flux pinning properties of the tapes as the cooling rate is decreased.

    參考文獻
    相似文獻
    引證文獻
引用本文

陳興品,余曉偉,李明亞,劉 慶,韓征和.冷卻速率對(Bi, Pb)-2223/Ag超導帶材微觀結構和性能的影響[J].稀有金屬材料與工程,2011,40(4):737~740.[Chen Xingpin, Yu Xiaowei, Li Mingya, Liu Qing, Han Zhenghe. Effects of the Cooling Rate on the Microstructure and Properties of (Bi, Pb)-2223/Ag Tapes[J]. Rare Metal Materials and Engineering,2011,40(4):737~740.]
DOI：[doi]

復制
文章指標
  • 點擊次數:
  • 下載次數:
  • HTML閱讀次數:
  • 引用次數:
歷史
  • 收稿日期:2010-04-26
  • 最后修改日期:
  • 錄用日期:
  • 在線發(fā)布日期:
  • 出版日期: