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Preparation and Characterization of Cu-Nb-C-Nb Micro-composites wires
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1.The College of Materials,Northwestern Polytechnical University,Xi’an;2.Northwest Institute for Nonferrous Metal Research,Xi’an

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    Abstract:

    In this paper, a multi-core composite wire (3 #) with graphene-coated niobium powder reinforced Cu-Nb was prepared by using powder casting technology, Cu-Nb multi-core composite wire (4#) reinforced the grapheme and niobium powder, and Cu-Nb multi-core composite wire (5#) reinforced pure niobium powder. It is found that the i ntensity of Nb (110) diffraction peak is obviously enhanced after 800 ℃ / 60h heat treatment by the optimized heat treatment process.The microstructure and energy spectrum analysis (EDS) show that the high temperature heat treatment is favorable for the slight diffusion of Cu / Nb interface between, the bonding strength of interface and wire plasticity have been significantly improved.The results show that the conductivity of Cu-Nb-C-Nb wire with graphene-coated niobium powder is better than that of the other two kinds of wires. Finally, Plastic deformation mechanism and micro-mechanism of performance change of the three different materials are analysised.The idea of further optimization of the process is put forward, which opens up a new direction for the preparation of high strength and high conductivity multi-element composite wire.

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[WANG Peng-fei, ZHANG Ping-xiang, LIANG Ming, JIN Li-hua, XU Xiao-yan, LI Cheng-shan. Preparation and Characterization of Cu-Nb-C-Nb Micro-composites wires[J]. Rare Metal Materials and Engineering,2019,48(3):936~940.]
DOI:10.12442/j. issn.1002-185X.20170649

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History
  • Received:July 23,2017
  • Revised:December 25,2018
  • Adopted:December 18,2017
  • Online: April 10,2019
  • Published: