会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 10. 发明申请
    • IMPROVED PROCESS FOR MAKING SUPERCONDUCTORS
    • 制造超导体的改进方法
    • WO1988010009A1
    • 1988-12-15
    • PCT/US1988002024
    • 1988-06-08
    • E.I. DU PONT DE NEMOURS AND COMPANY
    • E.I. DU PONT DE NEMOURS AND COMPANYHOROWITZ, Harold, Saul
    • H01L39/00
    • H01L39/2419C01G3/006C01P2002/72C01P2002/76C01P2004/61C01P2004/62C04B35/4504C04B35/4512C04B35/4521Y10S505/734Y10S505/737Y10S505/738
    • There is disclosed an improved process for preparing a superconducting composition having the formula MwAzCuvOx, wherein M is selected from the group consisting of Bi, Tl, Y, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb and Lu; A is at least one alkaline earth metal selected from the group consisting of Ba, Ca and Sr; x is at least 6; w is at least 1; z is at least 2 and v is at least 1; said composition having a superconducting transition temperature of above 77 K, preferably above about 90 K; said process consisting essentially of (a) forming a suspension having an M:A:Cu atomic ratio of w:z:v by mixing A(OH)2, AO or AO2 and M2O3 with an aqueous solution of cupric carboxylate or cupric nitrate at a temperature from about 50 DEG C to about 100 DEG C, or mixing A(OH)2 with an aqueous solution of Cu carboxylate, nitrate or a mixture thereof and M carboxylate, nitrate or a mixture thereof at a temperature from about 50 DEG C to about 100 DEG C; (b) drying the suspension formed in step (a) to obtain a precursor powder; and (c) heating and cooling the powder under specified conditions to form the desired superconducting composition. Shaped articles thereof are also disclosed.
    • 公开了一种制备具有式MwAzCuvOx的超导组合物的改进方法,其中M选自Bi,Tl,Y,Nd,Sm,Eu,Gd,Dy,Ho,Er,Tm,Yb和Lu ; A是选自Ba,Ca和Sr中的至少一种碱土金属; x至少为6; w至少为1; z至少为2,v为至少1; 所述组合物的超导转变温度高于77K,优选高于约90K; 所述方法基本上由(a)通过将A(OH)2,AO或AO 2和M 2 O 3与羧酸铜或硝酸铜的水溶液混合而形成具有W:z:v的M:A:Cu原子比的悬浮液 约50℃至约100℃的温度,或在约50℃的温度下将A(OH)2与Cu羧酸盐,硝酸盐或其混合物的水溶液和M羧酸盐,硝酸盐或其混合物混合 至约100℃; (b)干燥步骤(a)中形成的悬浮液以获得前体粉末; 和(c)在特定条件下加热和冷却粉末以形成所需的超导组合物。 其形状也被公开。