Cornelis Leo Hans Thieme - Westborough MA Elliott D. Thompson - Coventry RI Leslie G. Fritzemeier - Acton MA Robert D. Cameron - Franklin MA Edward J. Siegal - Malden MA
Assignee:
American Superconductor Corporation - Westborough MA
International Classification:
C22C 906
US Classification:
148435, 505470, 505474, 505500
Abstract:
An alloy that contains at least two metals and can be used as a substrate for a superconductor is disclosed. The alloy can contain an oxide former. The alloy can have a biaxial or cube texture. The substrate can be used in a multilayer superconductor, which can further include one or more buffer layers disposed between the substrate and the superconductor material. The alloys can be made a by process that involves first rolling the alloy then annealing the alloy. A relatively large volume percentage of the alloy can be formed of grains having a biaxial or cube texture.
Multi-Layer Superconductor Having Buffer Layer With Oriented Termination Plane
Suresh Annavarapu - Brookline MA Martin W. Rupich - Framingham MA Xiaoping Li - Westborough MA Wei Zhang - Shrewsbury MA Edward J. Siegal - Malden MA Qi Li - Marlborough MA
Assignee:
American Superconductor Corporation - Westborough MA
International Classification:
C09K 1900
US Classification:
428701, 428930, 505237, 505238
Abstract:
The invention relates to multi-layer articles and methods of making such articles. The multi-layer superconductors can have one or more layers with an oriented termination plane. The methods include first conditioning the termination plane of an underlying layer, such as a buffer layer or a superconductor layer, then disposing a layer of material on the conditioned termination plane. The conditioned termination plane can be a high quality termination plane. Superconductor articles formed by these methods can exhibit relatively high critical current densities.
Surface Control Alloy Substrates And Methods Of Manufacture Therefor
Leslie G. Fritzemeier - Mendon MA Qi Li - Marlborough MA Martin W. Rupich - Framingham MA Elliott D. Thompson - Coventry RI Edward J. Siegal - Malden MA Cornelis Leo Hans Thieme - Westborough MA Suresh Annavarapu - Brookline MA Paul N. Arendt - Los Alamos NM Stephen R. Foltyn - Los Alamos NM
Assignee:
Electronic Power Research Institute, Incorporated - Palo Alto CA The Regents of the University of California - Oakland CA
Methods and articles for controlling the surface of an alloy substrate for deposition of an epitaxial layer. The invention includes the use of an intermediate layer to stabilize the substrate surface against oxidation for subsequent deposition of an epitaxial layer.
Thick Superconductor Films With Improved Performance
Xiaoping Li - Westborough MA, US Thomas Kodenkandath - N. Grafton MA, US Edward J. Siegal - Malden MA, US Wei Zhang - Shrewsbury MA, US Martin W. Rupich - Framingham MA, US Yibing Huang - Northborough MA, US
Assignee:
American Superconductor Corporation - Westborough MA
International Classification:
H01B 12/00
US Classification:
505235, 505123, 505238
Abstract:
A method for producing a thick film includes disposing a precursor solution onto a substrate to form a precursor film. The precursor solution contains precursor components to a rare-earth/alkaline-earth-metal/transition-metal oxide including a salt of a rare earth element, a salt of an alkaline earth metal, and a salt of a transition metal in one or more solvents, wherein at least one of the salts is a fluoride-containing salt, and wherein the ratio of the transition metal to the alkaline earth metal is greater than 1. 5. The precursor solution is treated to form a rare earth-alkaline earth-metal transition metal oxide superconductor film having a thickness greater than 0. 8 μm. precursor solution.
Thick Superconductor Films With Improved Performance
Xiaoping Li - Westborough MA, US Thomas Kodenkandath - N. Grafton MA, US Edward J. Siegal - Malden MA, US Wei Zhang - Shrewsbury MA, US Martin W. Rupich - Framingham MA, US Yibing Huang - Northborough MA, US
Assignee:
American Superconductor Corporation - Devens MA
International Classification:
B05D 5/12 H01L 39/24
US Classification:
427 62, 29599, 505430, 505434, 505470
Abstract:
A method for producing a thick film includes disposing a precursor solution onto a substrate to form a precursor film. The precursor solution contains precursor components to a rare-earth/alkaline-earth-metal/transition-metal oxide including a salt of a rare earth element, a salt of an alkaline earth metal, and a salt of a transition metal in one or more solvents, wherein at least one of the salts is a fluoride-containing salt, and wherein the ratio of the transition metal to the alkaline earth metal is greater than 1. 5. The precursor solution is treated to form a rare earth-alkaline earth-metal transition metal oxide superconductor film having a thickness greater than 0. 8 μm. precursor solution.
Leslie G. Fritzemeier - Acton MA Elliott D. Thompson - Coventry RI Edward J. Siegal - Malden MA Cornelis Leo Hans Thieme - Westborough MA Robert D. Cameron - Franklin MA James L. Smith - Los Alamos NM W. Larry Hults - Los Alamos NM
Assignee:
American Superconductor Corporation - Westborough MA The Regents of the University of California - Oakland CA
An alloy capable of forming a (100) [001] cube-texture by thermo-mechanical techniques has 5 to 45 atomic percent nickel with the balance being copper. The alloy is useful as a conductive substrate for superconducting composites where the substrate is coated with a superconducting oxide. A buffer layer can optionally be coated on the substrate to enhance deposition of the superconducting oxide. Methods for producing the alloys, substrates, and superconductors are included.