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Method for producing single domain yttrium barium copper oxide superconduction block

A technology of yttrium barium copper oxide and superconducting block, which is applied in the field of high-temperature copper oxide superconducting materials, can solve the problems of high process cost and long preparation time, simplify the experimental process, shorten the preparation time, and prevent the loss of liquid phase Effect

Inactive Publication Date: 2013-02-13
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the technical problems of long preparation time and high process cost in the preparation method of single-domain gadolinium-barium-copper-oxygen superconducting bulk material, the present invention provides a preparation method of precursor powder A method for preparing single-domain yttrium-barium-copper-oxygen superconducting bulk materials that is short in time and capable of preparing superconducting bulk materials that are easy to grow in orientation and have high magnetic levitation force

Method used

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  • Method for producing single domain yttrium barium copper oxide superconduction block
  • Method for producing single domain yttrium barium copper oxide superconduction block
  • Method for producing single domain yttrium barium copper oxide superconduction block

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Effect test

Embodiment 1

[0042] With the raw material Y used 2 o 3 Taking the initial powder of solid-phase precursor powder as an example, the method for preparing monodomain yttrium-barium-copper-oxygen superconducting bulk material consists of the following steps:

[0043] (1) Preparation of solid phase precursor powder

[0044] Take 106.9064g BaCO 3 Mixed with 43.0936g CuO, BaCO 3 The molar ratio with CuO powder is 1:1, and BaCuO is prepared by solid state reaction method 2 Powder, the Y 2 o 3 Primary powder and BaCuO 2 The powder is mixed in a molar ratio of 1:1.2, and 100g of the mixed powder is added to a ball mill and mixed to make (Y 2 o 3 +1.2BaCuO 2 ) as solid phase precursor powder.

[0045] (2) Preparation of liquid source powder

[0046] Take 22.6956g Y 2 o 3 with 79.3350 g BaCO 3 , 47.9695g CuO powder is mixed in a molar ratio of 1:4:6, and sintered into YBa by solid state reaction method 2 Cu 3 o 7-y Powder, 0≤y≤1, take 106.9064g BaCO 3 Mix it with 43.0936g CuO powder...

Embodiment 2

[0061] With the raw material Y used 2 o 3 Taking the initial powder of solid-phase precursor powder as an example, the method for preparing monodomain yttrium-barium-copper-oxygen superconducting bulk material consists of the following steps:

[0062] (1) Preparation of solid phase precursor powder

[0063] Take 106.9064g BaCO 3 Mixed with 43.0936g CuO, BaCO 3The molar ratio with CuO powder is 1:1, and BaCuO is prepared by solid state reaction method 2 Powder, the Y 2 o 3 Primary powder and BaCuO 2 The powder is mixed in a molar ratio of 1:1, and 100g of the mixed powder is added to a ball mill and mixed evenly to make (Y 2 o 3 +BaCuO 2 ) as solid phase precursor powder.

[0064] (2) Preparation of liquid source powder

[0065] Take 22.6956g Y 2 o 3 with 79.3350 g BaCO 3 , 47.9695g CuO powder is mixed in a molar ratio of 1:4:6, and sintered into YBa by solid state reaction method 2 Cu 3 o 7-y Powder, 0≤y≤1, take 106.9064g BaCO 3 Mix it with 43.0936g CuO powde...

Embodiment 3

[0076] With the raw material Y used 2 o 3 Taking the initial powder of solid-phase precursor powder as an example, the method for preparing monodomain yttrium-barium-copper-oxygen superconducting bulk material consists of the following steps:

[0077] (1) Preparation of solid phase precursor powder

[0078] Take 106.9064g BaCO 3 Mixed with 43.0936g CuO, BaCO 3 The molar ratio with CuO powder is 1:1, and BaCuO is prepared by solid state reaction method 2 Powder, the Y 2 o 3 Primary powder and BaCuO 2 The powder is mixed in a molar ratio of 1:2, and 100g of the mixed powder is added to a ball mill and mixed evenly to make (Y 2 o 3 +2BaCuO 2 ) as solid phase precursor powder.

[0079] (2) Preparation of liquid source powder

[0080] Take 22.6956g Y 2 o 3 with 79.3350 g BaCO 3 , 47.9695g CuO powder is mixed in a molar ratio of 1:4:6, and sintered into YBa by solid state reaction method 2 Cu 3 o 7-y Powder, 0≤y≤1, take 106.9064g BaCO 3 Mix it with 43.0936g CuO pow...

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Abstract

The invention relates to a method for producing a single domain yttrium barium copper oxide superconduction block. A top-seeded infiltration growing method is adopted to change the ingredients of the solid source powder which is used by the solid block, so that the whole infiltration growing process only needs two precursor powders of YBa2Cu3O7-delta and BaCuO2, the time for preparing the precursor powders is greatly shortened, experimental links are simplified, the experimental period is shortened, the experimental cost is lowered, and the efficiency is increased; and moreover, the single domain yttrium barium copper oxide superconduction block which is prepared by the method has large magnetic suspension buoyancy force, an assembly method that the size of a liquid block is slightly larger than or equals to the size of a solid block is adopted, and the liquid loss, sample collapse, full contact of the solid phase and the liquid phase, crystal growth and oriented growth are benefited.

Description

technical field [0001] The invention belongs to the technical field of high-temperature copper oxide superconducting materials, and in particular relates to a method for preparing monodomain yttrium-barium-copper-oxygen superconducting block materials by a top seed crystal infiltration growth method. Background technique [0002] Monodomain copper oxide high temperature superconducting bulk material (RE-Ba-Cu-O, where RE is a rare earth element, such as Nd, Gd, Y, etc.) has a high critical temperature and critical current density, and has a strong magnetic field Strong flux pinning capability. This advantage has laid the foundation for the application of this type of material in magnetic levitation technology, especially in the development of superconducting magnetic levitation bearings, energy storage flywheels, and superconducting motors and generators. In the process of preparing single-domain copper oxide superconducting bulk materials, there are two main processes that...

Claims

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Application Information

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IPC IPC(8): C04B35/45C04B35/622
Inventor 杨万民王孝江王明梓
Owner SHAANXI NORMAL UNIV
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