High temperature superconducting material and a method for production
AssigneeTrue 2 Materials Pte Ltd.
InventorsWilliam Rieken, Atit Bhargava
Life of this patent
Estimating the term…
Abstract
A process for producing a process for producing a LnM2Cu3Ox high-temperature superconductive powder, the process comprising: i) providing an aqueous solution of Ln, M and Cu and at least one mineral acid; ii) adding at least one sequestrating agent and, optionally, at least one dispersant to the solution to form a precipitate; iii) recovering the precipitate from the solution; and iv) heating the precipitate in a flow of oxygen to form the LnM2Cu3Ox powder, wherein Ln is a rare earth element, preferably Y, Ce, Dy, Er, Gd, La, Nd, Pr, Sm, Sc, Yb, or a mixture of two or more thereof, and wherein M is selected from Ca, Sr, and Ba.
Claims18
A process for producing a superconductive paint, the process comprising:
- forming a dispersion of a high-temperature superconductive powder in a liquid, wherein the high-temperature superconductive powder is LnM2-yXyCu3Ox and/or Ln2M2-yXyCuOx, wherein Ln is a rare earth element or a mixture of two or more thereof, Mis selected from Ca, Sr, and Ba, X is selected from the group consisting of Mg, Se, Sr, Ca and mixtures of two or more thereof, y is from 0.1 to 0.8 and the powder has a morphology selected from the group consisting of cigars, spiral, spires, rods, tubes, cylinders, agglomerates and flat “cracker” shaped crystalline agglomerates.
A superconductive paint comprising a dispersion of a high-temperature superconductive powder in a liquid, wherein the high-temperature superconductive powder is LnM2-yXyCu3Ox and/or Ln2M2-yXyCuOx, wherein Ln is a rare earth element or a mixture of two or more thereof, M is selected from Ca, Sr, and Ba, X is selected from the group consisting of Mg, Se, Sr, Ca and mixtures of two or more thereof, y is from 0.1 to 0.8 and the powder has a morphology selected from the group consisting of cigars, spiral, spires, rods, tubes, cylinders, agglomerates and flat “cracker” shaped crystalline agglomerates.
A multilayer film comprising at least one superconducting layer, wherein the superconducting layer comprises a high-temperature superconductive powder, wherein the high-temperature superconductive powder is LnM2-yXyCu3Ox and/or Ln2M2-yXyCuOx, wherein Ln is a rare earth element or a mixture of two or more thereof, Mis selected from Ca, Sr, and Ba, X is selected from the group consisting of Mg, Se, Sr, Ca and mixtures of two or more thereof, y is from 0.1 to 0.8 and the powder has a morphology selected from the group consisting of cigars, spiral, spires, rods, tubes, cylinders, agglomerates and flat “cracker” shaped crystalline agglomerates.
Dependencies are inferred from the claim text.