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王鹏飞,张平祥,梁明,金利华,徐晓燕,李成山.Cu-Nb-C-Nb多芯复合线材的制备及表征[J].稀有金属材料与工程(英文),2019,47(3):936~940.[WANG Peng-fei,ZHANG Ping-xiang,LIANG Ming,JIN Li-hua,XU Xiao-yan and LI Cheng-shan.Preparation and Characterization of Cu-Nb-C-Nb Micro-composites wires[J].Rare Metal Materials and Engineering,2019,47(3):936~940.]
Preparation and Characterization of Cu-Nb-C-Nb Micro-composites wires
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Received:July 23, 2017  Revised:December 25, 2018
DOI:
Key words: Graphene coated niobium powder  Bundling and drawing process  Plastic deformation mechanism  
Foundation item:国家自然科学(51601151),国家重大专项支持项目(2016YFA0401701),陕西省自然(2017ZDJC-19)
Author NameAffiliation
WANG Peng-fei,ZHANG Ping-xiang,LIANG Ming,JIN Li-hua,XU Xiao-yan and LI Cheng-shan  
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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.