公开(公告)号：US5114911A

公开(公告)日：1992-05-19

申请号：US658055

申请日：1991-02-20

Applicant: Cheng-Yie Shei ,  Weir-Mirn Hurng ,  Chau-Ting Chang

Inventor： Cheng-Yie Shei ,  Weir-Mirn Hurng ,  Chau-Ting Chang

IPC: C01G3/00

CPC classification number: C01G3/006 ,  C01P2002/70 ,  C01P2002/72 ,  C01P2002/76 ,  C01P2004/01 ,  C01P2004/03 ,  C01P2006/42 ,  Y10S505/737 ,  Y10S505/738

Abstract: An oxalate route coprecipitation process for preparing a superconducting YBaCuO system precursor powder comprises preparing an aqueous solution of nitrates of yttrium, barium and copper, which is then mixed with an organic solution containing a dibasic oxalate ester, an organic base and acetone. An ultrasound vibration is applied to the mixture to coprecipitate oxalates of yttrium, barium and copper. The decomposition of the oxalate ester is enhanced to an optimum rate as the result of the homogeneous phase contributed by acetone which is miscible with both water and the oxalate ester. The ultrasound vibration segregates the precipitate particles thereby preventing the coagulation of the particles and assuring fine and uniform particle size.

Abstract translation: 用于制备超导YBaCuO系统前体粉末的草酸盐路线共沉淀法包括制备钇，钡和铜的硝酸盐水溶液，然后将其与含有草酸二碱酯，有机碱和丙酮的有机溶液混合。 将超声波振动施加到混合物以共沉淀钇，钡和铜的草酸盐。 草酸酯的分解作为由丙酮贡献的均相的结果提高到最佳速率，丙酮与水和草酸酯都可混溶。 超声波振动使沉淀颗粒分离，从而防止颗粒的凝结，并确保微细且均匀的粒径。

公开(公告)号：US5210069A

公开(公告)日：1993-05-11

申请号：US777573

申请日：1991-10-16

Applicant: Chung-Kwang Chiang ,  Cheng-Yie Shei

Inventor： Chung-Kwang Chiang ,  Cheng-Yie Shei

IPC: C01G29/00 ,  C04B35/45 ,  C04B35/624 ,  H01L39/24

CPC classification number: C01G29/006 ,  C04B35/4517 ,  C04B35/4525 ,  C04B35/624 ,  H01L39/2477 ,  C01P2002/72 ,  C01P2006/32 ,  C01P2006/40 ,  Y10S505/735 ,  Y10S505/737

Abstract: A preparation method for high-purity Tl-based superconductor phase of 115 K, and the precursor thereof. The process comprises a specific composition of precursors, represented by the formula:(Tl.sub.a Pb.sub.b Bi.sub.c)Sr.sub.2-x Ca.sub.2+x Cu.sub.y O.sub.z, wherein (a+b+c)=1, 0

Abstract translation: 115 K的高纯度T1型超导体相的制备方法及其前体。 该方法包括由下式表示的前体的特定组成：（TlaPbbBic）Sr2-xCa2 + xCuyOz，其中（a + b + c）= 1,0