Preparation method of copper-niobium superconducting composite material

A composite material and superconducting technology, applied in the usage of superconducting elements, superconducting devices, superconducting/high-conducting conductors, etc., can solve the problem of high content of impurity elements in copper-niobium alloy, and achieve no component segregation and no inclusions. The effect of material and composition uniformity

Pending Publication Date: 2020-04-21
JIANGSU UNIV OF SCI & TECH
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the mechanical alloying method can obtain copper-niobium alloy with uniform composition and effectively eliminate composition segregation, the content of impurity elements in the copper-niobium alloy produced by this method is high

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
  • Preparation method of copper-niobium superconducting composite material
  • Preparation method of copper-niobium superconducting composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Put 17kg of copper powder with a particle size of 200 meshes and 3kg of niobium powder with a particle size of 200 meshes into a roller ball mill and mix for 2h, then pour the uniformly mixed copper-niobium powder into a mold and press on the press to form copper with a size of Φ50×300mm -Niobium consumable electrode bar material, the pressure is 300MPa during pressing, and the pressure holding time is 10min. The pressed copper-niobium consumable electrode bar material is put into a vacuum sintering furnace for sintering. The sintering temperature is 900°C, and the holding time is 10min. Time is 10h, vacuum degree is 1×10 -4 Pa, the copper-niobium consumable electrode is obtained, which is welded on the auxiliary electrode by argon tungsten arc welding, and is smelted in a vacuum arc furnace of model ZH-200.

[0018] The melting process is like figure 1 As shown, the copper-niobium consumable electrode 5 is placed in a water-cooled crucible 4 with a diameter of 150mm. The a...

Embodiment 2

[0021] Put 16kg of copper powder with a particle size of 200 mesh and 4kg of niobium powder with a particle size of 200 mesh into a roller ball mill and mix for 2 hours, then pour the uniformly mixed copper-niobium powder into a mold and press on the press to form copper with a size of Φ50×300mm -Niobium consumable electrode bar material, the pressure is 300MPa during pressing, and the pressure holding time is 10min. The pressed copper-niobium consumable electrode bar material is put into a vacuum sintering furnace for sintering. The sintering temperature is 900°C, and the holding time is 10min. Time is 10h, vacuum degree is 1×10 -4 Pa, the copper-niobium consumable electrode is obtained, which is welded on the auxiliary electrode by argon tungsten arc welding, and is smelted in a vacuum arc furnace of model ZH-200 to obtain a copper-niobium superconducting composite material. The length is 25-30mm, the melting voltage is 25V, the melting current is 5000A, and the furnace pressu...

Embodiment 3

[0023] Put 15kg of copper powder with a particle size of 200 meshes and 5kg of niobium powder with a particle size of 200 meshes into a roller ball mill and mix for 2 hours, then pour the uniformly mixed copper-niobium powder into a mold and press on the press to form copper with a size of Φ50×300mm -Niobium consumable electrode bar material, the pressure is 300MPa during pressing, and the pressure holding time is 10min. The pressed copper-niobium consumable electrode bar material is put into a vacuum sintering furnace for sintering. The sintering temperature is 900°C, and the holding time is 10min. Time is 10h, vacuum degree is 1×10 -4 Pa, the copper-niobium consumable electrode is obtained, which is welded on the auxiliary electrode by argon tungsten arc welding, and is smelted in a vacuum arc furnace of model ZH-200 to obtain a copper-niobium superconducting composite material. The length is 25-30mm, the melting voltage is 25V, the melting current is 5000A, and the furnace pr...

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
particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention discloses a preparation method of a copper-niobium superconducting composite material. The method comprises the following steps that (1), copper powder and niobium powder are uniformly mixed; (2), the uniformly mixed copper-niobium powder is poured into a mold, then a copper-niobium consumable electrode bar is pressed on a press machine; (3) the pressed copper-niobium consumable electrode bar is loaded into a vacuum sintering furnace, sintering is carried out, a copper-niobium consumable electrode is obtained; and (4) the copper-niobium consumable electrode is welded on an auxiliary electrode in protective gas, smelting in a vacuum arc furnace is carried out, and the copper-niobium superconducting composite material is obtained. According to the preparation method of the copper-niobium superconducting composite material, the copper-niobium superconducting composite material is uniform in component, free of the component segregation phenomenon and free of generated inclusions.

Description

Technical field [0001] The invention relates to a method for preparing a superconducting composite material, and more specifically, to a method for preparing a copper-niobium superconducting composite material. Background technique [0002] Copper-niobium alloy exhibits good superconductivity at low temperatures, and at the same time has high thermal and electrical conductivity at room temperature. It has broad application prospects in high-tech fields such as particle accelerators and nuclear reactors. At present, the methods for preparing copper-niobium alloys are mainly vacuum induction melting and mechanical alloying. However, the vacuum induction melting method has a slow cooling rate, and copper and niobium are almost insoluble in the solid state, and the melting point is different. Therefore, the copper-niobium alloy prepared by this method has a serious tendency to segregate. Although the mechanical alloying method can obtain a copper-niobium alloy with uniform compositi...

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 Applications(China)
IPC IPC(8): C22C1/02C22B9/20C22C9/00H01B12/00
CPCC22B9/20C22C1/02C22C9/00H01B12/00Y02E40/60
Inventor 石铭霄周方明杨志东施超陈书锦刘大双
Owner JIANGSU UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap