Lockheed Martin Energy Research Corporation

Other

Ut-battelle, Inc.

Martin Marietta Energy Systems, Inc.

Lockheed Martin Energy Systems, Inc.

Eliot D Specht

Amit Goyal

Donald M Kroeger

Mariappan Parans Paranthaman

David K Christen

David P Norton

John D Budai

Jonathan S Morrell

David B Beach

Thomas G Chirayil

Qing I He

Dominic F Lee

Brian C Sales

Frederick Alyious List, Iii

A laminate article comprises a substrate and a biaxially textured (RE RE ) O buffer layer over the substrate, wherein 0<x<1 and RE and RE are each selected from the group consisting of Nd, Sm, Eu, Ho, Er, Lu, Gd, Tb, Dy, Tm, and Yb. The (RE RE ) O buffer layer can be deposited using sol-gel or metal-organic decomposition. The laminate article can include a layer of YBCO over the (RE RE ) O buffer layer. A layer of CeO between the YBCO layer and the (RE RE ) O buffer can also be include. Further included can be a layer of YSZ between the CeO layer and the (R RE ) O buffer layer. The substrate can be a biaxially textured metal, such as nickel. A method of forming the laminate article is also disclosed.

Laminate articles on biaxially textured metal substrates

A laminate article comprises a substrate and a biaxially textured (RE RE ) O buffer layer over the substrate, wherein 0<x<1 and RE and RE are each selected from the group consisting of Nd, Sm, Eu, Ho, Er, Lu, Gd, Tb, Dy, Tm, and Yb. The (RE RE ) O buffer layer can be deposited using sol-gel or metal-organic decomposition. The laminate article can include a layer of YBCO over the (RE RE ) O buffer layer. A layer of CeO between the YBCO layer and the (RE RE ) O buffer can also be include. Further included can be a layer of YSZ between the CeO layer and the (RE RE ) O buffer layer. The substrate can be a biaxially textured metal, such as nickel. A method of forming the laminate article is also disclosed.

Method of depositing buffer layers on biaxially textured metal substrates

Specific alloys, in particular Ni-based alloys, that can be biaxially textured, with a well-developed, single component texture are disclosed. These alloys have a significantly reduced Curie point, which is very desirable from the point of view of superconductivity applications. The biaxially textured alloy substrates also possess greatly enhanced mechanical properties (yield strength, ultimate tensile strength) which are essential for most applications, in particular, superconductors. A method is disclosed for producing complex multicomponent alloys which have the ideal physical properties for specific applications, such as lattice parameter, degree of magnetism and mechanical strength, and which cannot be in textured form. In addition, a method for making ultra thin biaxially textured substrates with complex compositions is disclosed.

Method of forming biaxially textured alloy substrates and devices thereon

A superconducting article includes a biaxially-textured Ni substrate, and epitaxial buffer layers of Pd (optional), CeO.sub.2 and YSZ, and a top layer of in-plane aligned, c-axis oriented YBCO having a critical current density (J.sub.c) in the range of at least 100,000 A/cm.sup.2 at 77 K.

High Tc YBCO superconductor deposited on biaxially textured Ni substrate

Specific alloys, in particular Ni-based alloys, that can be biaxially textured, with a well-developed, single component texture are disclosed. These alloys have a significantly reduced Curie point, which is very desirable from the point of view of superconductivity applications. The biaxially textured alloy substrates also possess greatly enhanced mechanical properties (yield strength, ultimate tensile strength) which are essential for most applications, in particular, superconductors. A method is disclosed for producing complex multicomponent alloys which have the ideal physical properties for specific applications, such as lattice parameter, degree of magnetism and mechanical strength, and which cannot be fabricated in textured form. In addition, a method for making ultra thin biaxially textured substrates with complex compositions is disclosed.

A biaxially textured alloy article includes a rolled and annealed biaxially textured base metal substrate characterized by an x-ray diffraction phi scan peak of no more than 20.degree. FWHM; and a biaxially textured layer of an alloy or another material on a surface thereof. The article further includes at least one of an electromagnetic device or an electro-optical device epitaxially joined to the alloy.

Structures having enhanced biaxial texture

A biaxially textured article includes a rolled and annealed, biaxially textured substrate of a metal having a face-centered cubic, body-centered cubic, or hexagonal close-packed crystalline structure; and an epitaxial superconductor or other device epitaxially deposited thereon.

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Knoxville, TN, United States of America

Eliot D Specht