公开(公告)号：WO1995030247A1

公开(公告)日：1995-11-09

申请号：PCT/US1995005186

申请日：1995-04-27

Applicant: AMERICAN SUPERCONDUCTOR CORPORATION

Inventor： AMERICAN SUPERCONDUCTOR CORPORATION ,  HUGHSON, Steven ,  THOMPSON, Elliott

IPC: H01L39/24

CPC classification number: H01L39/248 ,  Y10T29/49014 ,  Y10T29/49812

Abstract: An oxide superconductor wire is prepared by preparing a length of precursor wire for processing into an oxide superconductor wire and coating the precursor wire with an isolating layer. The coated wire is wound onto a reel in a spiralling manner, such that each turn of the spiral is in alignment with the preceding turn of the spiral along an axis perpendicular to the axis of winding. Thewound precursor wire is then heated to form the oxide superconductor. The removable isolating layer is prepared by coating the wire with a solution including a metal oxide and a porosity-inducing component, and heating the coated wire so as to induce porosity and control grain size of the metal oxide so as to render the coating removable. The coating should function to isolate the overlapping turns of the wound wire from neighboring wires, so that no diffusion bonding or adherence between the turns occurs. The coating should also be readily removable because the coating can interfere with subsequent processing of the oxide superconductor wire.

Abstract translation: 通过制备一段长度的用于加工成氧化物超导体线的前体丝并用隔离层涂覆前体丝来制备氧化物超导线。 涂覆的线以螺旋方式卷绕在卷轴上，使得螺旋线的每个转弯沿着垂直于卷绕轴线的轴线与螺旋的前一转弯对齐。 然后将绕线前体丝加热形成氧化物超导体。 通过用包括金属氧化物和孔隙率诱导组分的溶液涂覆线制备可除去的隔离层，并加热涂覆的电线，以便诱导孔隙率并控制金属氧化物的晶粒尺寸以使涂层可移除。 涂层应起到隔离缠绕线与相邻线的重叠线圈的作用，从而不会发生匝间的扩散接合或附着。 涂层也应该易于移除，因为涂层可能干扰氧化物超导体线的后续处理。

公开(公告)号：WO1996039366A2

公开(公告)日：1996-12-12

申请号：PCT/US1996008802

申请日：1996-06-05

Applicant: AMERICAN SUPERCONDUCTOR CORPORATION

Inventor： AMERICAN SUPERCONDUCTOR CORPORATION ,  LI, Qi ,  PODTBURG, Eric, R. ,  WALSH, Patrick, John ,  CARTER, William, L. ,  RILEY, Gilbert, N., Jr. ,  RUPICH, Martin, W. ,  THOMPSON, Elliott ,  OTTO, Alexander

IPC: C04B35/45

CPC classification number: C22C29/12 ,  B22F3/1216 ,  B22F3/18 ,  C04B35/4521 ,  C22C5/00 ,  H01L39/248 ,  Y10S505/739 ,  Y10S505/742 ,  Y10S505/887 ,  Y10T29/49014

Abstract: A method is described to prepare a highly textured oxide superconductor article in a single deformation-sinter process. A precursor article including a plurality of filaments comprising a precursor oxide having a dominant amount of a tetragonal BSCCO 2212 phase and a constraining member substantially surrounding each of the filaments is provided. Each of the filaments extends along the length of the article. The oxide article is subjected to a heat treatment at an oxygen partial pressure and temperature selected to convert a tetragonal BSCCO 2212 oxide into an orthorhombic BSCCO 2212 oxide and, thereafter, roll worked in a high reduction draft in a range of about 40 % to 95 % in thickness so that the filaments have a constraining dimension is substantially equivalent to a longest dimension of the oxide superconductor grains. The rolled article is sintered to obtain a BSCCO 2223 oxide superconductor.

Abstract translation: 描述了在单个变形烧结过程中制备高度纹理的氧化物超导体制品的方法。 提供了包括多个长丝的前体制品，其包含具有显着数量的四边形BSCCO 2212相的前体氧化物和基本上围绕每个长丝的约束构件。 每个细丝沿着制品的长度延伸。 将氧化物制品在选择的氧分压和温度下进行热处理，以将四方晶BSCCO 2212氧化物转化成斜方晶BSCCO 2212氧化物，然后在大约40％至95的范围内以高的还原通量进行辊加工 使得长丝的约束尺寸基本上等于氧化物超导体晶粒的最长尺寸。 将轧制制品烧结以获得BSCCO 2223氧化物超导体。

公开(公告)号：WO1996039721A1

公开(公告)日：1996-12-12

申请号：PCT/US1996008801

申请日：1996-06-05

Applicant: AMERICAN SUPERCONDUCTOR CORPORATION

Inventor： AMERICAN SUPERCONDUCTOR CORPORATION ,  LI, Qi ,  PODTBURG, Eric, R. ,  WALSH, Patrick, John ,  CARTER, William, L. ,  RILEY, Gilbert, N., Jr. ,  RUPICH, Martin, W. ,  THOMPSON, Elliott ,  OTTO, Alexander

IPC: H01L39/24

CPC classification number: C04B35/4521 ,  C04B35/4525 ,  C04B35/65 ,  H01L39/2419 ,  H01L39/248 ,  Y10T29/49014

Abstract: A novel process of the production and processing of high quality, high Tc (Bi,Pb)SCCO superconductors starts with fabrication of a precursor article including selected intermediate phases with desired chemical and structural properties. The precursor fabrication includes introducing the reacted mixture having a dominant amount of the tetragonal BSCCO phase into a metal sheath, and sealing the reacted mixture within said sheath, heating the mixture at a second selected processing temperature in an inert atmosphere with a second selected oxygen partial pressure for a second selected time period, the second processing temperature and the second oxygen partial pressure being cooperatively selected to form a dominant amount of an orthorhombic BSCCO phase in the reacted mixture. The sealed sheath is deformed to form an elongated precursor article of a desired texture; and thereafter heated at a third selected processing temperature in an inert atmosphere with a third selected oxygen partial pressure for a third selected time period. The third processing temperature and third oxygen partial pressure are cooperatively selected to convert at least a portion of the orthorhombic BSCCO phase to the final superconducting BSCCO material.

Abstract translation: 高品质，高Tc（Bi，Pb）SCCO超导体的生产和加工的新工艺首先制造包含所需化学和结构性质的选定中间相的前体制品。 前体制备包括将具有显着量的四边形BSCCO相的反应混合物引入金属护套中，并将反应的混合物密封在所述护套内，在第二选择的加工温度下在惰性气氛中加热第二选择的氧部分 第二选择时间段的压力，第二加工温度和第二氧分压协同选择以形成反应混合物中正交BSCCO相的显着量。 密封的鞘被变形以形成具有所需纹理的细长的前体制品; 然后在具有第三选择的氧分压的惰性气氛中在第三选择的处理温度下加热第三选定时间段。 协调选择第三加工温度和第三氧分压以将正交BSCCO相的至少一部分转化为最终超导BSCCO材料。