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1.发明授权公开(公告)号：US06694600B2
公开(公告)日：2004-02-24
申请号：US09990953
申请日：2001-11-21
申请人： Qi Li , Eric R. Podtburg , Patrick John Walsh , William L. Carter , Gilbert N. Riley, Jr. , Martin W. Rupich , Elliott Thompson , Alexander Otto
发明人： Qi Li , Eric R. Podtburg , Patrick John Walsh , William L. Carter , Gilbert N. Riley, Jr. , Martin W. Rupich , Elliott Thompson , Alexander Otto
IPC分类号： H01L3924
CPC分类号： C22C29/12 , B22F3/1216 , B22F3/18 , C04B35/4521 , C22C5/00 , H01L39/248 , Y10S505/739 , Y10S505/742 , Y10S505/887 , Y10T29/49014
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US5994275A
公开(公告)日：1999-11-30
申请号：US779808
申请日：1997-01-08
IPC分类号： C04B35/45 , C01G1/00 , C01G3/00 , C01G29/00 , H01B12/02 , H01B13/00 , H01L39/24 , H01L39/12 , H01B12/00
CPC分类号： H01L39/2464 , Y10S505/742 , Y10S505/782 , Y10S505/785
摘要： An oxide superconductor article comprises silver and an oxide superconductor having the formula Bi.sub.2-y Pb.sub.y Sr.sub.2 Ca.sub.2 O.sub.10+x, where 0.ltoreq.x.ltoreq.1.5, and 0.3.ltoreq.y.ltoreq.0.4, the oxide superconductor characterized by a critical current transition temperature of greater than 111.0 K as defined by zero resistance by a four point linear probe method with zero resistance corresponding to a resistivity of less that 10.sup.-8 .OMEGA.-cm.
摘要翻译： 氧化物超导体制品包含银和氧化物超导体，其具有式Bi2-yPbS2Ca2O10 + x，其中0≤x≤1.5且0.3≤y≤0.4，氧化物超导体的特征在于临界电流转变 温度大于111.0K，由零电阻定义，通过四点线性探针法，零电阻对应于电阻率小于10-8 OMEGA-cm。
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公开(公告)号：US06311386B1
公开(公告)日：2001-11-06
申请号：US09358245
申请日：1999-07-21
申请人： Qi Li , Eric R. Podtburg , Patrick John Walsh , William L. Carter , Gilbert N. Riley, Jr. , Martin W. Rupich , Elliott Thompson , Alexander Otto
发明人： Qi Li , Eric R. Podtburg , Patrick John Walsh , William L. Carter , Gilbert N. Riley, Jr. , Martin W. Rupich , Elliott Thompson , Alexander Otto
IPC分类号： H01L3929
CPC分类号： C04B35/4521 , C04B35/4525 , C04B35/65 , H01L39/2419 , H01L39/248 , Y10S505/739 , Y10S505/74 , Y10S505/742 , Y10T29/49014
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US06331675B1
公开(公告)日：2001-12-18
申请号：US08843041
申请日：1997-04-11
申请人： Qi Li , Eric R. Podtburg , Patrick John Walsh , William L. Carter , Gilbert N. Riley, Jr. , Martin W. Rupich , Elliott Thompson , Alexander Otto
发明人： Qi Li , Eric R. Podtburg , Patrick John Walsh , William L. Carter , Gilbert N. Riley, Jr. , Martin W. Rupich , Elliott Thompson , Alexander Otto
IPC分类号： H01B1210
CPC分类号： C22C29/12 , B22F3/1216 , B22F3/18 , C04B35/4521 , C22C5/00 , H01L39/248 , Y10S505/739 , Y10S505/742 , Y10S505/887 , Y10T29/49014
摘要： An aspected multifilamentary oxide article is provided having a plurality of aspected filaments including a metal oxide and extending continuously for the length of the article. A constraining member substantially surrounds each filament, wherein each of the filaments has an average transverse cross-sectional thickness less than about 35 &mgr;m and an average variation in cross-section along its length of less than about 10%. The article exhibits superior filament uniformity, hardness, and oxide density and texture.
摘要翻译： 提供了一种多边形复丝氧化物制品，其具有包括金属氧化物并且在制品的长度上连续延伸的多个长方形长丝。 约束构件基本上围绕每个细丝，其中每根长丝具有小于约35μm的平均横截面厚度，并且其长度的横截面的平均变化小于约10％。 该物品显示出优异的长丝均匀性，硬度和氧化物密度和质地。
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公开(公告)号：US06284712B1
公开(公告)日：2001-09-04
申请号：US09451742
申请日：1999-11-30
IPC分类号： C04B3564
CPC分类号： H01L39/2464 , Y10S505/742 , Y10S505/782 , Y10S505/785
摘要： A method for preparing a BSCCO-2223 oxide superconducting article includes annealing an oxide superconductor article comprised of BSCCO-2223 oxide superconductor at a temperature selected from the range of about 500° C.≦T≦787° C. and an annealing atmosphere having an oxygen pressure selected from within the region having a lower bound defined by the equation, PO2(lower)≧3.5×1010exp(−32,000/T+273) and an upper bound defined by the equation, PO2(upper)≦1.1×1012exp(−32,000/T+273). The article is annealed for a time sufficient to provide at least a 10% increase in critical current density as compared to the critical current density of the pre-anneal oxide superconductor article. An oxide superconductor having the formula Bi2−yPbySr2Ca2Cu3O10+x, where 0≦x≦1.5 and where 0≦y≦0.6 is obtained, the oxide superconductor characterized by a critical transition temperature of greater than 111.0 K, as determined by four point probe method.
摘要翻译： 制备BSCCO-2223氧化物超导制品的方法包括在选自约500℃的温度范围内对由BSCCO-2223氧化物超导体组成的氧化物超导体制品进行退火。<= T <= 787℃和退火气氛 具有从具有由下式定义的下限的区域内选择的氧气压力：PO2（下）≥3.5×1010exp（-32,000 / T + 273），由上式定义的上限PO2（上）<= 1.1 x1012exp（-32,000 / T + 273）。 与预退火氧化物超导体制品的临界电流密度相比，该制品退火足以提供临界电流密度至少10％的时间。 具有式Bi2-yPbySr2Ca2Cu3O10 + x的氧化物超导体，其中0 <= x <= 1.5，其中0 <= y <= 0.6，所述氧化物超导体的特征在于临界转变温度大于111.0K，如由 四点探针法。
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6.发明授权公开(公告)号：US06247224B1
公开(公告)日：2001-06-19
申请号：US08468089
申请日：1995-06-06
申请人： Qi Li , Eric R. Podtburg , Patrick John Walsh , William L. Carter , Gilbert N. Riley, Jr. , Martin W. Rupich , Elliott Thompson , Alexander Otto
发明人： Qi Li , Eric R. Podtburg , Patrick John Walsh , William L. Carter , Gilbert N. Riley, Jr. , Martin W. Rupich , Elliott Thompson , Alexander Otto
IPC分类号： H01L3924
CPC分类号： C22C29/12 , B22F3/1216 , B22F3/18 , C04B35/4521 , C22C5/00 , H01L39/248 , Y10S505/739 , Y10S505/742 , Y10S505/887 , Y10T29/49014
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US06436876B1
公开(公告)日：2002-08-20
申请号：US09861248
申请日：2001-05-18
IPC分类号： C04B3564
CPC分类号： H01L39/2464 , Y10S505/742 , Y10S505/782 , Y10S505/785
摘要： A method for preparing a BSCCO-2223 oxide superconducting article includes annealing an oxide superconductor article comprised of BSCCO-2223 oxide superconductor at a temperature selected from the range of about 500° C.≦T≦787° C. and an annealing atmosphere having an oxygen pressure selected from within the region having a lower bound defined by the equation, PO2(lower)≧3.5×1010 exp(−32,000/T+273) and an upper bound defined by the equation, PO2(upper)≦1.1×1012 exp(−32,000/T+273). The article is annealed for a time sufficient to provide at least a 10% increase in critical current density as compared to the critical current density of the pre-anneal oxide superconductor article. An oxide superconductor having the formula Bi2−yPbySr2Ca2Cu3O10+x, where 0≦x≦1.5 and where 0≦y≦0.6 is obtained, the oxide superconductor characterized by a critical transition temperature of greater than 111.0 K, as determined by four point probe method.
摘要翻译： 制备BSCCO-2223氧化物超导制品的方法包括在选自约500℃的温度范围内对由BSCCO-2223氧化物超导体组成的氧化物超导体制品进行退火。<= T <= 787℃和退火气氛 PO2（下）> = 3.5×10 10 exp（-32,000 / T + 273）和由上式定义的上限的PO2（上）<= 1.1×1012 exp（-32,000 / T + 273）。 与预退火氧化物超导体制品的临界电流密度相比，该制品退火足以提供临界电流密度至少10％的时间。 具有式Bi2-yPbySr2Ca2Cu3O10 + x的氧化物超导体，其中0 <= x <= 1.5，其中0 <= y <= 0.6，所述氧化物超导体的特征在于临界转变温度大于111.0K，如由 四点探针法。
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公开(公告)号：US5942466A
公开(公告)日：1999-08-24
申请号：US467033
申请日：1995-06-06
申请人： Qi Li , Eric R. Podtburg , Patrick John Walsh , William L. Carter , Gilbert N. Riley, Jr. , Martin W. Rupich , Elliott Thompson , Alexander Otto
发明人： Qi Li , Eric R. Podtburg , Patrick John Walsh , William L. Carter , Gilbert N. Riley, Jr. , Martin W. Rupich , Elliott Thompson , Alexander Otto
CPC分类号： C04B35/4521 , C04B35/4525 , C04B35/65 , H01L39/2419 , H01L39/248 , Y10T29/49014
摘要： A novel process of the production and processing of high quality, high T.sub.c (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.
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公开(公告)号：US5635456A
公开(公告)日：1997-06-03
申请号：US41822
申请日：1993-04-01
IPC分类号： H01L39/24 , C04B35/64 , C04B35/50 , C04B35/653 , H01B12/00
CPC分类号： H01L39/2464 , Y10S505/739 , Y10S505/742
摘要： A method for preparing an oxide superconductor article includes exposing the article after deformation of the article to a final heat treatment having the steps of (a) heating the article at a temperature sufficient to partially melt the article, such that a liquid phase co-exists with the desired oxide superconductor phase; and (b) cooling to and holding the article at a temperature sufficient to transform the liquid phase into the desired oxide superconductor, where no deformation occurs after the final heat treatment. The liquid phase of step (a) wets surfaces of a defect contained within the mixed phase, whereby upon transformation of the liquid in step (b) to the desired oxide superconductor, the defect is healed.
摘要翻译： 制备氧化物超导体制品的方法包括在制品变形之后使制品暴露于最终热处理，其具有以下步骤：（a）在足以部分熔化制品的温度下加热制品，使得液相共存 具有所需的氧化物超导体相; 和（b）在足以将液相转变成期望的氧化物超导体的温度下冷却并保持制品，其中在最终热处理后不发生变形。 步骤（a）的液相润湿包含在混合相中的缺陷的表面，由此在将步骤（b）中的液体转化为所需氧化物超导体时，缺陷得到愈合。
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公开(公告)号：US5661114A
公开(公告)日：1997-08-26
申请号：US198912
申请日：1994-02-17
IPC分类号： C04B35/45 , C01G1/00 , C01G3/00 , C01G29/00 , H01B12/02 , H01B13/00 , H01L39/24 , H01B12/00 , C04B35/64 , H01L39/12
CPC分类号： H01L39/2464 , Y10S505/742 , Y10S505/782 , Y10S505/785
摘要： A method for preparing a BSCCO-2223 oxide superconducting article includes annealing an oxide superconductor article comprised of BSCCO-2223 oxide superconductor at a temperature selected from the range of about 500.degree. C..ltoreq.T.ltoreq.787.degree. C. and an annealing atmosphere having an oxygen pressure selected from within the region having a lower bound defined by the equation, P.sub.O2 (lower).gtoreq.3.5.times.10.sup.10 exp(-32,000/T+273) and an upper bound defined by the equation, P.sub.O2 (upper).ltoreq.1.1.times.10.sup.12 exp(-32,000/T+273). The article is annealed for a time sufficient to provide at least a 10% increase in critical current density as compared to the critical current density of the pre-anneal oxide superconductor article. An oxide superconductor having the formula Bi.sub.2-y Pb.sub.y Sr.sub.2 Ca.sub.2 Cu.sub.3 O.sub.10+x, where 0.ltoreq.x.ltoreq.1.5 and where 0.ltoreq.y.ltoreq.0.6 is obtained, the oxide superconductor characterized by a critical transition temperature of greater than 111.0K, as determined by four point probe method.
摘要翻译： 制备BSCCO-2223氧化物超导制品的方法包括在选自约500℃的温度范围内退火由BSCCO-2223氧化物超导体组成的氧化物超导体制品。 退火气氛，其具有从具有下式定义的区域内的氧气压力选择：PO2（下）> / = 3.5×1010exp（-32,000 / T + 273），由上式定义的上限PO2（上）
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