Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for making enforced double-axis woven Ag/AgMg composite base band

A composite baseband and texture technology, applied in metal rolling, manufacturing tools, metal rolling, etc., can solve the problems of poor mechanical strength of Ag and no biaxial texture formed on the surface of baseband, etc., and achieve the effect of strong mechanical strength

Active Publication Date: 2007-08-01
深创超导(深圳)科技有限公司
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the mechanical strength of Ag is relatively poor, so if its mechanical strength can be improved by compounding in practical applications, it can be used on the composite substrate to directly prepare high-performance high-temperature superconducting films or as Bi-2223PIT strips Packaging materials, thus promoting the process of industrialization
[0003] At present, research groups at home and abroad are conducting research on coating high-temperature superconducting films on composite substrates. Some Ag alloys or Ag-Cu composite substrates have been studied for biaxially textured coated conductors, but on the surface of these strengthened substrates No single stable {110} biaxial texture is formed, which limits the direct deposition of YBCO superconducting thin films on the substrate

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for making enforced double-axis woven Ag/AgMg composite base band
  • Method for making enforced double-axis woven Ag/AgMg composite base band

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Example 1. The 4mm Ag 0.90 Mg 0.10 Initial ingot, 8.5cm thick Ag foil with a purity of 99.95wt%, 30μm thick Cu foil with a purity of 99.99wt%, arranged in the order of Ag-Cu-AgMg to obtain a multi-layer structure, the above-mentioned multi-layer ingot was heated at 800 ° C Vacuum annealing for 5 hours to obtain a 13mm multi-layer ingot; cold rolling the multi-layer ingot with a deformation of 10-15% per pass and a total deformation of more than 95% to obtain a base strip with a thickness of 100 μm. Then the base tape is vacuum annealed at 800°C for 5 hours, and then oxygen annealed at 880°C for 4 hours to obtain the final product. The cross-sectional SEM of the composite base tape (Figure 1a) shows that the Ag layer and the AgMg layer have good bonding. In Fig. 1b, the recrystallization texture orientation distribution function (ODF) section diagram ( 2 = 0° cross-section) intensity concentrated distribution area means that the base band forms a {110} texture, and t...

Embodiment 2

[0020] Example 2. The 4mm Ag 0.90 Mg 0.10 Initial ingot, 8.5cm thick Ag foil with a purity of 99.95wt%, 40μm thick Cu foil with a purity of 99.99wt%, arranged in the order of Ag-Cu-AgMg to obtain a multi-layer structure, the above-mentioned multi-layer ingot was heated at 850 ° C Vacuum annealing for 3 hours to obtain a 13mm multi-layer ingot; cold rolling the multi-layer ingot with a deformation of 10-15% per pass and a total deformation of more than 95% to obtain a base strip with a thickness of 300 μm. Then the base tape is vacuum annealed at 850°C for 3 hours, and then oxygen annealed at 880°C for 4 hours to obtain the final product. The base belt forms a {110} texture, and the Vickers microhardness value reaches 158kgmm -2 ; The cross-section SEM (Fig. 2) of the composite substrate shows that the Ag layer and the AgMg layer have good bonding.

Embodiment 3

[0021] Example 3. The Ag of 1mm 0.99 Mg 0.01 Initial ingot, 3.5cm thick Ag foil with a purity of 99.95wt%, 30μm thick Cu foil with a purity of 99.99wt%, arranged in the order of Ag foil-Cu foil-AgMg initial ingot to obtain a multi-layer ingot, the above multiple The multi-layer ingot was annealed at 850°C for 4 hours in vacuum to obtain a 5mm multi-layer ingot; the multi-layer ingot was cold-rolled with a deformation of 10-15% per pass and a total deformation of more than 95% to obtain a base strip with a thickness of 100 μm. The base tape is then vacuum annealed at 800°C for 4 hours, and then oxygen annealed at 900°C for 3 hours to obtain the final product. The base belt forms a {110} texture, and the Vickers microhardness value reaches 100kgmm -2 ; The cross-section SEM (Fig. 3) of the composite substrate shows that the Ag layer and the AgMg layer have good bonding.

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
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

A process for preparing the basic Ag / AgMg band with strengthened biaxial texture includes such steps as smelting Mg powder and Ag powder under protection of Ar gas, casting to obtain AgMg ingot, selectively overlapping said ingot, Cu foil and Ag foil, cold pressing, vacuum annealing at 800-850 deg.C for 3-5 hr, cold rolling to obtain (100-300)-micron basic band, annealing at 800-850 deg.C in vacuum or Ar gas for 3-5 hr, and annealing in O2. It can be used for depositing high-temp superconductor film on it.

Description

technical field [0001] The invention relates to a method for preparing a reinforced Ag-based composite substrate, and belongs to the technical field of preparation of high-temperature superconducting reinforced toughness materials. Background technique [0002] Due to the advantages of the material itself, that is, high irreversible line, low AC loss, and potential price advantage, the second-generation superconducting materials have attracted the attention of domestic and foreign governments and scientific research institutes in recent years, and have achieved considerable development. The breakthroughs in the performance and price of the wire strip will be transformed into the advantages of industrial production in the near future, showing its strong commercial value; It has been initially applied in some countries, and it is a high-temperature superconducting material that can be applied in a short period of time. Silver is the only base metal that does not require an is...

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
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C22C5/06C22C1/02C22F1/14B21B37/16
Inventor 索红莉赵跃刘敏周美玲
Owner 深创超导(深圳)科技有限公司