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1.发明授权
公开(公告)号：KR1019920008520B1
公开(公告)日：1992-10-01
申请号：KR1019900006409
申请日：1990-05-07
Applicant: 한국과학기술원
Abstract: The high temperature superconducting powder is manufactured by emulsion drying or hot kerosene drying method. The fine superconducting powder by this method has properties of high purity and homogeneous chemical composition. The Bi(Pb)-Sr-Ca-Cu-O based superconductor is prepared by (a) making an aqueous solution, having compositions of Pb0.34Sr1.91Ca2.03Cu3.06Oy, Bi2Sr2Ca2Cu3Oy and concentration of 0.07 mole, by dissolving bismuth nitrate [Bi(NO3)2-5H2O , lead nitrate [Pb(NO3)2 , strontium nitrate [Sr(NO3)2 , and calcium nitrate [Ca(NO3)2-4H2O in distilled water, (b) emulsifying them with oil and the surfactant containing kerosene and twin 85 (polyoxyethylene sorbitan ester), (c) calcinating and sintering the solution. The critical temperatures which have Bi(Pb)2Sr2Ca1Cu2Oy and Bi(Pb)2Sr2Ca2Cu3Oy phases are 80K and 110K, respectively.
Abstract translation: 高温超导粉末通过乳液干燥或热煤油干燥方法制造。 该方法制备的超细粉末具有纯度高，化学成分均匀的特点。 Bi（Pb）-Sr-Ca-Cu-O系超导体是通过（a）制备具有Pb0.34Sr1.91Ca2.03Cu3.06Oy，Bi2Sr2Ca2Cu3Oy，Bi2Sr2Ca2Cu3Oy组成的水溶液，浓度为0.07摩尔的硝酸铋 [Bi（NO 3）2·5H 2 O]，硝酸铅[Pb（NO 3）2，硝酸锶[Sr（NO 3）2]和硝酸钙[Ca（NO 3）2·4H 2 O）在蒸馏水中，（b） 含有煤油和孪晶85（聚氧乙烯脱水山梨糖醇酯）的表面活性剂，（c）煅烧并烧结溶液。 Bi（Pb）2Sr2Ca1Cu2Oy和Bi（Pb）2Sr2Ca2Cu3Oy相的临界温度分别为80K和110K。
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2.发明授权에멀젼 건조방법(또는 석유증발법)을 이용한 Bi(Pb)-Sr-Ca-Cu-O계의 고온 초전도체 분말의 제조방법 失效（Pb）-Sr-Ca-Cu-O系高温超导体粉末，使用乳化干燥法（或油蒸发法）
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