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Sintering mechanism of Ag-doped MgB2 superconductor from low temperature to high temperature

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Abstract

Combined with thermal analysis and phase identification, the sintering process of Ag-doped MgB2 superconductor was investigated. It is found that the Ag doping could form Mg–Ag liquid through the eutectic reaction at low temperature (about 470 °C) and then obviously accelerated the formation of MgB2 phase. Moreover, a sintering model is also proposed to illustrate the liquid activated sintering mechanism present in the sintering process of Ag-doped MgB2 samples. The sintering model is supposed to provide theoretic guidance for optimizing the sintering condition in the synthesis of doped MgB2 superconductors.

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Authors and Affiliations

  1. School of Materials Science and Engineering, Tianjin University of Technology, 300191, Tianjin, People’s Republic of China

    B. Q. Ning

  2. Tianjin Pipe (Group) Corporation, 300301, Tianjin, People’s Republic of China

    B. Q. Ning & Z. S. Yan

  3. School of Materials Science & Engineering, Tianjin University, 300072, Tianjin, People’s Republic of China

    H. Jiang

Authors
  1. B. Q. Ning
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  2. H. Jiang
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  3. Z. S. Yan
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Correspondence to Z. S. Yan.

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Ning, B.Q., Jiang, H. & Yan, Z.S. Sintering mechanism of Ag-doped MgB2 superconductor from low temperature to high temperature. J Mater Sci: Mater Electron 21, 666–670 (2010). https://doi.org/10.1007/s10854-009-9974-4

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  • DOI: https://doi.org/10.1007/s10854-009-9974-4

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