JP2006240980A - 酸化物超電導体の原料の製造方法、酸化物超電導線材の製造方法、および超電導機器 - Google Patents
酸化物超電導体の原料の製造方法、酸化物超電導線材の製造方法、および超電導機器 Download PDFInfo
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- 239000002887 superconductor Substances 0.000 title claims abstract description 110
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- 238000000034 method Methods 0.000 title claims abstract description 28
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 104
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 61
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 52
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- 229910052799 carbon Inorganic materials 0.000 description 10
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- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 8
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Abstract
【解決手段】酸化物超電導体の原料粉末1の製造方法は、酸化物超電導体を構成する原子を含む材料を溶液中でイオン化する工程と、雰囲気14に溶液11を噴射して溶媒を除去することにより、酸化物超電導体を構成する原子を含む原料粉末1aを製造する工程と、冷却用気体を導入した雰囲気16で、原料粉末1aを冷却する工程とを備えている。雰囲気16の二酸化炭素濃度は、除去された溶媒の成分を含む雰囲気15の二酸化炭素濃度よりも低く、かつ雰囲気16の窒素酸化物濃度は、除去された溶媒の成分を含む雰囲気15の窒素酸化物濃度よりも低く、かつ雰囲気16の水蒸気の濃度は、除去された溶媒の成分を含む雰囲気15の水蒸気の濃度よりも低い。
【選択図】図2
Description
(実施の形態1)
本実施の形態では、ビスマス系の酸化物超電導体の原料の製造方法について説明する。
本実施の形態では、実施の形態1で製造した酸化物超電導体の原料を用いた酸化物超電導線材の製造方法について説明する。
本実施の形態の酸化物超電導線材4の製造方法は、実施の形態1に示す原料粉末の製造方法を用いて酸化物超電導体2の原料粉末1を製造する工程(ステップS10)と、原料粉末1を用いて酸化物超電導線材4を作製する工程(ステップS11〜ステップS16)とを備えている。
Claims (12)
- 酸化物超電導体を構成する原子を含む材料を溶液中でイオン化する工程と、
第1雰囲気に前記溶液を噴射して溶媒を除去することにより、前記酸化物超電導体を構成する原子を含む粉末を製造する工程と、
冷却用気体を導入した第2雰囲気で、前記粉末を冷却する工程とを備え、
前記第2雰囲気の二酸化炭素濃度は、除去された前記溶媒の成分を含む前記第1雰囲気の二酸化炭素濃度よりも低く、かつ前記第2雰囲気の窒素酸化物濃度は、除去された前記溶媒の成分を含む前記第1雰囲気の窒素酸化物濃度よりも低く、かつ前記第2雰囲気の水蒸気の濃度は、除去された前記溶媒の成分を含む前記第1雰囲気の水蒸気の濃度よりも低い、酸化物超電導体の原料の製造方法。 - 前記粉末を製造する工程は、噴霧用気体とともに前記溶液を噴射する工程と、前記第1雰囲気から前記第2雰囲気へ搬送用気体によって前記溶液を搬送する工程とを含み、
前記噴霧用気体、前記搬送用気体、および前記冷却用気体を合わせた全気体の体積流量が前記溶液の流量の10000倍以上である、請求項1に記載の酸化物超電導体の原料の製造方法。 - 前記粉末を製造する工程は、噴霧用気体とともに前記溶液を噴射する工程と、前記第1雰囲気から前記第2雰囲気へ搬送用気体によって前記溶液を搬送する工程とを含み、
前記第2雰囲気の水蒸気の濃度が10体積%以下である、請求項1に記載の酸化物超電導体の原料の製造方法。 - 前記粉末を製造する工程は、噴霧用気体とともに前記溶液を噴射する工程と、前記第1雰囲気から前記第2雰囲気へ搬送用気体によって前記溶液を搬送する工程とを含み、
前記噴霧用気体と前記搬送用気体とを合わせた前記第1雰囲気の気体の体積流量をq1(リットル/秒)、溶液から発生するガスの体積流量をq2(リットル/秒)、前記第1雰囲気の体積をV(リットル)とした場合に、
0.1(秒)≦V/(q1+q2)≦20(秒)の関係を満たす、請求項1に記載の酸化物超電導体の原料の製造方法。 - 前記粉末を製造する工程は、噴霧用気体とともに前記溶液を噴射する工程と、前記第1雰囲気から前記第2雰囲気へ搬送用気体によって前記溶液を搬送する工程とを含み、
前記噴霧用気体、前記搬送用気体、および前記冷却用気体は、いずれも水蒸気の濃度が1体積%以下である、請求項1に記載の酸化物超電導体の原料の製造方法。 - 前記粉末を製造する工程は、噴霧用気体とともに前記溶液を噴射する工程と、前記第1雰囲気から前記第2雰囲気へ搬送用気体によって前記溶液を搬送する工程とを含み、
前記噴霧用気体、前記搬送用気体、および前記冷却用気体は、いずれも二酸化炭素濃度が30体積ppm以下である、請求項1に記載の酸化物超電導体の原料の製造方法。 - 前記粉末を冷却する工程の後で、前記粉末を熱処理する工程をさらに備える、請求項1〜6のいずれかに記載の酸化物超電導体の原料の製造方法。
- 前記粉末を熱処理する工程および前記粉末を熱処理した直後の冷却はいずれも熱処理装置内において行なわれ、
前記熱処理装置内へ前記粉末を導入する際における前記熱処理装置内の雰囲気、前記粉末を熱処理する際における前記熱処理装置内の雰囲気、前記粉末を冷却する際における前記熱処理装置内の雰囲気、および前記熱処理装置内から前記粉末を取り出す際における前記熱処理装置内の雰囲気は、いずれも水蒸気の濃度が1体積%以下である、請求項7に記載の酸化物超電導体の原料の製造方法。 - 前記粉末を熱処理する工程および前記粉末を熱処理した直後の冷却はいずれも熱処理装置内において行なわれ、
前記熱処理装置内へ前記粉末を導入する際における前記熱処理装置内の雰囲気、前記粉末を熱処理する際における前記熱処理装置内の雰囲気、前記粉末を冷却する際における前記熱処理装置内の雰囲気、および前記熱処理装置内から前記粉末を取り出す際における前記熱処理装置内の雰囲気は、いずれも二酸化炭素濃度が30体積ppm以下である、請求項7に記載の酸化物超電導体の原料の製造方法。 - 前記溶液は、硝酸水溶液である、請求項1〜9のいずれかに記載の酸化物超電導体の原料の製造方法。
- 請求項1〜10のいずれかに記載の酸化物超電導体の原料の製造方法を用いて酸化物超電導体の原料を製造する工程と、
前記酸化物超電導体の原料を用いて酸化物超電導線材を作製する工程とを備える、酸化物超電導線材の製造方法。 - 請求項11に記載の酸化物超電導線材の製造方法によって製造された酸化物超電導線材を用いた超電導機器。
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JP2005372553A JP4470880B2 (ja) | 2005-02-02 | 2005-12-26 | 酸化物超電導体の原料の製造方法、および酸化物超電導線材の製造方法 |
US11/579,583 US7514388B2 (en) | 2005-02-02 | 2006-01-30 | Method of producing a material of oxide superconductor, method of producing an oxide superconducting wire, and superconducting apparatus |
CN2006800002373A CN1956926B (zh) | 2005-02-02 | 2006-01-30 | 氧化物超导体原料的制造方法、氧化物超导线材的制造方法及超导装置 |
RU2006139745/09A RU2334294C1 (ru) | 2005-02-02 | 2006-01-30 | Способ производства материала из оксидного сверхпроводника, способ производства проволоки из оксидного сверхпроводника и сверхпроводниковое устройство |
EP06712542A EP1854763A4 (en) | 2005-02-02 | 2006-01-30 | METHOD FOR PRODUCING MATERIALS FOR OXIDIAL SUPERSTITUTES, METHOD FOR PRODUCING AN OXIDIAL SUPPLEMENTAL ROLLED WIRE AND SUPERCONDUCTING COMPONENT |
PCT/JP2006/301399 WO2006082767A1 (ja) | 2005-02-02 | 2006-01-30 | 酸化物超電導体の原料の製造方法、酸化物超電導線材の製造方法、および超電導機器 |
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DE112008000038T5 (de) | 2007-07-18 | 2010-02-04 | Sumitomo Electric Industries, Ltd. | Verfahren zur Herstellung eines pulverförmigen Rohmaterials für einen Oxid-Supraleiter |
CN110853830A (zh) * | 2019-11-21 | 2020-02-28 | 西北有色金属研究院 | 一种Bi-2212多芯超导线材的制备方法 |
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JP2011057484A (ja) * | 2009-09-08 | 2011-03-24 | Sumitomo Electric Ind Ltd | Bi2223酸化物超電導体 |
CN102412017B (zh) * | 2011-10-19 | 2014-06-04 | 中国科学院电工研究所 | 一种提高铁基超导体上临界场和临界电流密度的方法 |
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US5304666A (en) * | 1988-07-01 | 1994-04-19 | E. I. Du Pont De Nemours And Company | Process for making superconductors and their precursors |
US5081102A (en) * | 1988-11-09 | 1992-01-14 | Rockwell International Corporation | Preparation of precursor superconductor metal oxide powders by spray calcination from atomized nitrate solution |
US5079217A (en) * | 1988-11-28 | 1992-01-07 | E. I. Du Pont De Nemours And Company | Process for preparing homogenous superconductors by heating in a nitrogen dioxide containing atmosphere |
US5505865A (en) * | 1989-07-11 | 1996-04-09 | Charles Stark Draper Laboratory, Inc. | Synthesis process for advanced ceramics |
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DE112008000038T5 (de) | 2007-07-18 | 2010-02-04 | Sumitomo Electric Industries, Ltd. | Verfahren zur Herstellung eines pulverförmigen Rohmaterials für einen Oxid-Supraleiter |
CN110853830A (zh) * | 2019-11-21 | 2020-02-28 | 西北有色金属研究院 | 一种Bi-2212多芯超导线材的制备方法 |
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