Multi-layer articles and method of making same

A technology for multi-layer products and deposition layers, which can be used in manufacturing tools, chemical instruments and methods, cable/conductor manufacturing, etc. The effect of high density and low impurity density

A technology for multi-layer products and deposition layers, which can be used in manufacturing tools, chemical instruments and methods, cable/conductor manufacturing, etc. The effect of high density and low impurity density

CN1364321BInactive Publication Date: 2010-06-02AMERICAN SUPERCONDUCTOR
3 Cites 0 Cited by

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Multi-layer articles and method of making same
  • Multi-layer articles and method of making same
  • Multi-layer articles and method of making same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0164] Prepare a precursor solution as described below. About 51.4gY(CH 3 CO 2 ) 3 4H 2 O was dissolved in about 514 g of water. About 77.6gBa(CH 3 CO 2 ) 2 Dissolved in about 388g of water, about 91gCu(CH 3 CO 2 ) 3 2H 2 O was dissolved in about 1365 g of water. These three solutions are then mixed together. About 243 g of the solution obtained are mixed with about 10 ml of pure trifluoroacetic acid. The solution was dried under vacuum at about 60°C until all solvent was removed and only solids remained. The solid was then dissolved in methanol and diluted to a total volume of about 50 ml to form a precursor solution.

Embodiment 2

[0166] A multilayer article was prepared as follows. The precursor solution prepared in Example 1 was spin-coated on a CeO 2 / YSZ / CeO 2 / Ni buffered substrate.

[0167] The buffered substrate was prepared by rotationally deforming a nickel sample to over about 97% to form a ribbon. Annealing the ribbon at about 1000°C for about 1 hour forms a fine cubic textured material. Using electron beam evaporation and at a temperature of about 625 °C, a CeO with a thickness of about 30 nm 2 Layers were deposited on the textured nickel surface at a rate of about 1 Angstrom / sec. A ~300 nm thick layer of YSZ was deposited at a rate of ~0.5 Å / s on CeO using RF sputtering at a temperature of ~725 °C. 2 layer. Using radio frequency sputtering and at a temperature of about 725 °C, a CeO with a thickness of about 20 nm 2 Layers were deposited on the YSZ layer at a rate of about 0.7 Angstroms / sec. The buffered CeO 2 / YSZ / CeO 2 / Ni substrate cut into two parts.

[0168] The spin coating...

Embodiment 3

[0173] A multilayer article was prepared as follows. The unused part of CeO prepared in embodiment 2 2 / YSZ / CeO 2 The Ni / Ni buffered substrate was incubated at 900° C. for about 1 hour in a gaseous environment with a nominal total gas pressure of forming gas (about 4 vol% hydrogen in argon) of about 760 Torr. The gas environment has approximately 1 x 10 -12 Hold to about 1×10 -16 Torr's nominal oxygen pressure. The precursor solution prepared according to Example 1 was spin-coated on CeO 2 / YSZ / CeO 2 / Ni buffer substrate on the conditioned surface, decomposed and further heated according to Example 2. The resulting YBa was determined by transmission measurements at 77 K in a self-field using a 1 µV / cm standard 2 Cu 3 o 7-x layer has approximately 1.34 x 10 6 The critical current density in amperes / cm².

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
current densityaaaaaaaaaa
thicknessaaaaaaaaaa
current densityaaaaaaaaaa
Login to View More

Abstract

The invention relates to multi-layer articles and methods of making such articles. The methods include first conditioning 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 exhibitrelatively high critical current densities.

Description

[0001] The present application claims priority under 35 U.S.C. §119(e)(1) to commonly-owned U.S. Provisional Patent Application 60 / 166,1140, filed November 18, 1999, entitled "Multilayer Articles and Methods of Making Same" right. technical field [0002] The present invention relates to multilayer articles, such as multilayer superconductors, and methods of making such multilayer articles. Background technique [0003] Multilayer articles can be used in a variety of applications. For example, superconductors, including oxide superconductors, can be formed from multilayer articles. Typically, such superconductors comprise a layer of superconducting material and a layer, commonly referred to as a substrate, which enhances the mechanical strength of the multilayer article. [0004] In general, the substrate should exhibit some other property besides enhancing the strength of the multilayer superconductor. For example, the substrate should have a low Curie temperature so tha...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
02 Jun 2010
Publication
CN1364321B
IPC
H01L39/24; B22F7/00; B22F7/02; B23K35/36; C30B5/00; C30B23/02; H01B12/06; H01B13/00; H10N60/01; H10N60/20
CPC
H01L39/2451; H01L39/2425; H01L39/2461; C30B23/02; H01L39/143; H01L39/248; C30B23/002; C30B29/16
Inventors
张威; 马丁·W·鲁皮科