レーザ照射による超電導体の接合III Connecting Superconductors by Laser Irradiation III

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Production of oxide superconductors requires heat treatment which limits size of maximum superconductive area depending on the capacity of the electric furnace. A study on connecting superconductors was conducted to obtain large area superconductors such as for magnetic shield. A combination of two pieces of same superconductors with a pasted medium of the identical phase powder at their joint portion were installed on a jig system settled on an X-Y table to be exposed to laser irradiation. Two kinds of Bi system samples i.e., one is 2212 phase thick film prepared on MgO substrate and one is 2223 phase sintered bulk were used as starting materials respectively. A CO<SUB>2</SUB> laser beam accompanied by oxygen gas blow was irradiated onto the medium along the contact line at the fixed defocus distance of 120mm under the conditions: laser output power 180-500W, assist gas pressure 98-194kPa, beam scan speed 2-10mm/min and beam scan times 4-7strokes. The laser irradiation onto the 2223 phase medium was conducted both top and bottom surfaces. As a result, Tc<SUB>(end)</SUB> of 60.6K and 77.3K was obtained for 2212 phase and 2223 respectively after laser irradiation.

収録刊行物

  • 粉体および粉末冶金  

    粉体および粉末冶金 45(2), 140-144, 1998-02-15 

    Japan Society of Powder and Powder Metallurgy

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各種コード

  • NII論文ID(NAID)
    10002015056
  • NII書誌ID(NCID)
    AN00222724
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    05328799
  • NDL 記事登録ID
    4413738
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-274
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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