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Preparation method of a ferromagnetic textured nickel-tungsten/nickel-vanadium/nickel-tungsten composite substrate

A composite baseband and ferromagnetic technology, applied in the field of preparation of non-ferromagnetic textured nickel-tungsten/nickel-vanadium/nickel-tungsten composite basebands, can solve problems such as poor oxidation resistance, achieve high mechanical strength and avoid oxidation effects

Inactive Publication Date: 2018-09-07
HENAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcoming of poor oxidation resistance of nickel-vanadium / nickel-tungsten / nickel-vanadium composite baseband, and provide a non-ferromagnetic textured nickel-tungsten / nickel-vanadium by rationally designing the interlayer structure and process route of the composite baseband / Preparation method of nickel-tungsten composite substrate

Method used

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  • Preparation method of a ferromagnetic textured nickel-tungsten/nickel-vanadium/nickel-tungsten composite substrate
  • Preparation method of a ferromagnetic textured nickel-tungsten/nickel-vanadium/nickel-tungsten composite substrate
  • Preparation method of a ferromagnetic textured nickel-tungsten/nickel-vanadium/nickel-tungsten composite substrate

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Effect test

Embodiment 1

[0019] After grinding the oxide skin on the surface of nickel-tungsten alloy with 9.5 atomic percent of tungsten obtained from smelting, it is used as the outer layer material of the composite ingot; the nickel-vanadium mixed with 10 atomic percent of vanadium obtained by ball milling Powder, as the core material of the composite billet; the nickel-tungsten alloy and nickel-vanadium mixed powder are placed in the mold in the order of nickel-tungsten-nickel-vanadium-nickel-tungsten, with a thickness ratio of 1:1:1, and spark plasma sintering is used technology to obtain nickel-tungsten / nickel-vanadium / nickel-tungsten composite ingot, in which the discharge plasma sintering process is: heat preservation at 680°C for 5 minutes, sintering pressure is 30MPa; the sintered nickel-tungsten / nickel-vanadium / nickel-tungsten composite ingot Deformation cold rolling, the pass deformation is 10%, and the total deformation is 99.5%-99.9%. Finally, the nickel-tungsten / nickel-vanadium / nickel-tu...

Embodiment 2

[0021] After grinding the oxide skin on the surface of nickel-tungsten alloy with 10 atomic percent of tungsten obtained from smelting, it is used as the outer layer material of the composite ingot; the mixed nickel-vanadium with 10 atomic percent of vanadium obtained by ball milling Powder, as the core material of the composite billet; the nickel-tungsten alloy and nickel-vanadium mixed powder are placed in the mold in the order of nickel-tungsten-nickel-vanadium-nickel-tungsten, with a thickness ratio of 1:1:1, and spark plasma sintering is used Nickel-tungsten / nickel-vanadium / nickel-tungsten composite billets were obtained through technology, and the discharge plasma sintering process was: holding at 700°C for 5 minutes, and the sintering pressure was 35MPa; The deformation is cold rolled, the deformation of each pass is 12%, and the total deformation is 99.5%-99.9%. Finally, the nickel-tungsten / nickel-vanadium / nickel-tungsten composite base belt is obtained by recrystalliza...

Embodiment 3

[0023] After grinding the oxide skin on the surface of the nickel-tungsten alloy with 11 atomic percent of tungsten obtained from smelting, it is used as the outer layer material of the composite billet; the nickel-vanadium mixed with 10 atomic percent of vanadium obtained by ball milling Powder, as the core material of the composite billet; the nickel-tungsten alloy and nickel-vanadium mixed powder are placed in the mold in the order of nickel-tungsten-nickel-vanadium-nickel-tungsten, with a thickness ratio of 1:1:1, and spark plasma sintering is used technology to obtain nickel-tungsten / nickel-vanadium / nickel-tungsten composite ingot, in which the discharge plasma sintering process is: hold at 720°C for 5 minutes, and the sintering pressure is 40MPa; the nickel-tungsten / nickel-vanadium / nickel-tungsten composite ingot Deformation cold rolling, the pass deformation is 15%, and the total deformation is 99.5%-99.9%. Finally, the nickel-tungsten / nickel-vanadium / nickel-tungsten com...

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Abstract

The invention discloses a method for preparing a non-ferromagnetic textured nickel-tungsten / nickel-vanadium / nickel-tungsten composite substrate. The oxide skin on the surface of the nickel-tungsten alloy with a tungsten atomic percentage of 9.5%-11% obtained by smelting is polished. Finally, as the outer layer material of the composite ingot, the nickel-vanadium mixed powder with a vanadium atomic percentage of 10% obtained by ball milling is used as the core layer material of the composite ingot, and the nickel-tungsten alloy and the nickel-vanadium mixed powder are mixed according to the nickel-vanadium mixed powder. The order of tungsten-nickel-vanadium-nickel-tungsten is placed in the mold, and the nickel-tungsten / nickel-vanadium / nickel-tungsten composite billet is obtained by spark plasma sintering technology; Rolling, the pass deformation is 10%-15%, and the total deformation is 99.5%-99.9%. Finally, under the nitrogen protection atmosphere, the recrystallization heat treatment is carried out at 1250-1350°C for 200 minutes to obtain non-ferromagnetic, high-strength, and strong cubic weave. Structured nickel-tungsten / nickel-vanadium / nickel-tungsten composite substrate. The nickel-tungsten / nickel-vanadium / nickel-tungsten composite substrate prepared by the invention has no ferromagnetism, high mechanical strength and strong cubic texture.

Description

technical field [0001] The invention belongs to the technical field of metal substrates for high-temperature coated superconducting strips, and in particular relates to a preparation method of a non-ferromagnetic textured nickel-tungsten / nickel-vanadium / nickel-tungsten composite substrate. Background technique [0002] Because the second-generation high-temperature superconducting tape has superior performance than the first-generation bismuth-based superconducting materials, it is expected to realize its application in strong electric fields such as superconducting transformers, superconducting motors and superconducting current limiters. The preparation of high-performance metal substrates is the key to obtaining high-performance coated superconductors. Among the various metal alloy substrates used in coated conductors, nickel-tungsten alloy substrates are one of the most systematic and in-depth researched substrate materials. At present Ni5at.%W (Ni5W) alloy base strip ha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F7/04B22F3/105B22F3/18B22F3/24
CPCB22F3/105B22F3/18B22F3/24B22F7/04B22F2003/1051B22F2003/248B22F2998/10B22F2999/00B22F2201/02
Inventor 刘志勇宋孝辉张娜尚淑英黎文峰
Owner HENAN NORMAL UNIV
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