Nexans

Cambridge Enterprise Limited

Dirk Isfort

Joachim Bock

Andre Wolf

Arnaud Allais

Mark O Rikel

Klaus Porcher

Heribert Walter

Claus-Friedrich Theune

Judith Louise Driscoll

Ahmed Kursumovic

André Wolf

Judith Driscoll

A premixed powdery precursor composition suitable as precursor material for obtaining a coating solution for the preparation of, for instance, thin film superconductors based on YBCO 1:2:3 via a coating technique, wherein the powdery precursor composition comprises a mixture of suitable salts of the constituent elements, in particular salts of trifluoroacetate and acetate.

Precursor composition for YBCO-based superconductors

A coated conductor with simplified layer architecture includes a biaxial textured substrate, a template buffer layer composed of a material having the general formula REBOwith RE being at least one lanthanoid metal, B being at least one metal selected from Zr and Hf and &#x2212;0.4&#x2266;x&#x2266;+0.7, where the superconductor layer is obtainable by hybrid liquid phase epitaxy and can be deposited directly onto the template buffer layer.

Coated conductor with simplified layer architecture

Coated conductors have a substrate, a high temperature superconductor layer and at least one or more buffer layers, wherein at least one of the buffer layers is a template for biaxially orienting the high temperature superconductor layer wherein the template is composed of a polycrystalline film consisting of a non-stoichiometric material having the nominal chemical formula ABOwith B being at least one selected from Zr, Hf, Sn, Pb and Ti; A being at least one selected from La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Y, Tm, Yb and Lu; and x&#x2260;0; and wherein the substrate is textured.

Coated conductor and polycrystalline films useful for the production of high temperatures superconductor layers

The present invention relates to a resistive type high temperature superconductor based fault current limiter with improved heat exchange capability composed of a thermally conductive matrix materialwith a plurality of superconductor componentsembedded in the thermally conductive matrix materialwherein the plurality of superconductor componentsis connected electrically in parallel.

Resistive high temperature superconductor fault current limiter

A method is provided for producing a superconductive electrical conductor, in which a layer of an yttrium-barium-copper oxide (YBCO) is applied as a superconductive material onto a textured metal substrate, and is subjected to a heat treatment. In order to produce a wire-shaped conductor, a textured metal substrate, provided as a strip (), is initially shaped in its longitudinal direction around an elongate metal support () with a circular cross section to form a slotted tube () having edges extending in the longitudinal direction and adjoining one another at a slot (). The slotted tube () is next closed by welding the slot () shut, and the closed tube () is then contracted by pulling until it bears on the support (). The layer () of superconductive YBCO material is thereupon applied all around, and the heat treatment is finally carried out.

Method for producing a superconductive electrical conductor

The present invention relates to a metal-ceramic high temperature super-conductor composite having improved mechanical stability and cooling performance as well as to an improved method for bonding a ceramic high temperature superconductor to a metal surface wherein a bonding is provided, avoiding damage during the cooling of the composite below the critical temperature of the superconductor.

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Heidenheim, Germany

Dirk Isfort