文章信息/Info

Title:

Research on the Cu�睳b Microcomposites Reinforced by Graphene

文章編號(hào):

16743962(2019)11108204

作者:

王鵬飛1; 2; 梁明2; 徐曉燕2; 金利華2; 馮建情2; 李成山2; 李金山1; 張平祥1; 2

（1.西北工業(yè)大學(xué)材料學(xué)院，陜西 西安 710072）（2.西北有色金屬研究院，陜西 西安 710016）

Author(s):

WANG Pengfei1; 2;  LIANG Ming2;  XU Xiaoyan2;  JIN Lihua2;  FENG Jianqing2;  LI Chengshan2;  LI Jinshan1;  ZHANG Pingxiang1; 2

（1.School of Materials Science and Engineering, Northwestern Polytechnical University，Xi’an 710072, China） (2.Northwest Institute for Nonferrous Metal Research, Xi’an 710016, China)

關(guān)鍵詞:

石墨烯; 微觀組織; Cu-Nb復(fù)合線材; 導(dǎo)電機(jī)理; 力學(xué)性能

Keywords:

graphene;  microstructure;  Cu-Nb composite wire;  conductive mechanism;  mechanical properties

分類號(hào):

TG146.1; TB331

DOI:

10.7502/j.issn.1674-3962.201807016

文獻(xiàn)標(biāo)志碼:

A

摘要:

采用粉末套管法和集束拉拔技術(shù)，成功制備出石墨烯包覆鈮粉增強(qiáng)Cu-Nb（73芯）的復(fù)合線材（Cu-Nb-C）和純鈮粉增強(qiáng)Cu-Nb（73芯）的復(fù)合線材(Cu-Nb)。對(duì)兩種復(fù)合線材的芯絲組態(tài)、微觀組織進(jìn)行表征，結(jié)果表明，引入石墨烯摻雜的Cu-Nb-C線材的芯絲形態(tài)較規(guī)則、分布較均勻，這是由于石墨烯優(yōu)異的潤(rùn)滑特性很好地協(xié)調(diào)了Cu基體和Nb芯絲之間的塑性變形。對(duì)不同尺寸的Cu-Nb-C線材和Cu-Nb線材力學(xué)性能和導(dǎo)電性能進(jìn)行測(cè)試，結(jié)果表明，相比于Cu-Nb線材，Cu-Nb-C線材的力學(xué)強(qiáng)度雖然僅提高了幾十兆帕,但其導(dǎo)電性明顯增強(qiáng)，提高了近9%。石墨烯本身優(yōu)異的特性及線材芯絲的均勻分布是其導(dǎo)電性提高的主要原因，本實(shí)驗(yàn)研究可為發(fā)展新一代高強(qiáng)高導(dǎo)Cu-Nb復(fù)合線材提供一些理論依據(jù)和實(shí)驗(yàn)基礎(chǔ)。

Abstract:

Cu-Nb was reinforced by graphene coated niobium powder and pure niobium powder to prepare Cu-Nb-C microcomposite 73 filaments and Cu-Nb microcomposite 73 filaments by powder casing method and bundle-drawing technology. Through the characterization of filaments configuration and the microstructure of two kinds of wires, it is found the filaments distribution with introduction of graphene doping is relatively regular and uniform, due to the lubricating property of graphene well coordinating the deformation between Cu matrix and Nb filaments. Through the analysis of mechanical properties and electrical conductivity of two wires with different sizes, the results show that the strength of Cu-Nb-C wires increases with only tens of MPa compared with Cu-Nb wires, however, the conductivity of the Cu-Nb-C wire increases obviously, which reaches 9%. The excellent properties of graphene itself and the uniform distribution of filaments are the main reasons for the improvement of conductivity, which may provide theoretical basis and experimental basis for the development of a new generation of high�瞫trength and high-conductivity Cu-Nb composite wires.