Synergistic outstanding strengthening behavior of graphene/copper nanocomposites

被引：56

作者：

Yoo, Sung Chan ^{[1
]}

Lee, Junho ^{[1
]}

Hong, Soon Hyung ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, 291 Daehak Ro, Daejeon 34141, South Korea

来源：

COMPOSITES PART B-ENGINEERING | 2019年 / 176卷

基金：

新加坡国家研究基金会;

关键词：

Graphene; Nanocomposite; Mechanical properties; Strengthening mechanisms; ENHANCED MECHANICAL-PROPERTIES; THERMAL-CONDUCTIVITY; COPPER COMPOSITES; NANOSHEETS;

D O I：

10.1016/j.compositesb.2019.107235

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Graphene reinforced copper matrix (graphene/Cu) nanocomposite powders are fabricated by the molecular-level mixing process and consolidated by spark plasma sintering and pressureless sintering process followed by hot isostatic pressing for the full densification. The addition of 1.2% volume fraction of graphene in Cu matrix resulted in 1.9 and 1.3 times increase in yield strength and elastic modulus, respectively, in comparison to those of pure Cu fabricated by same sintering process. Homogeneous dispersion of graphene in Cu matrix and strong interfacial bonding between graphene and Cu matrix allowed outstanding mechanical properties which are similar to theoretically estimated values based on strengthening mechanisms. The strengthening mechanisms of graphene/Cu nanocomposites are quantitatively discussed in respect to grain boundary strengthening, load transfer and dislocation strengthening caused by mismatch in thermal expansion coefficient between graphene and Cu. It is demonstrated that graphene/Cu nanocomposites were strengthened mainly by load transfer mechanism and graphene induced grain boundary strengthening of Cu matrix. In addition, the rapid cooling rate during the spark plasma sintering process resulted in the dislocation strengthening in graphene/Cu nanocomposites.

引用

页数：6

共 29 条

[1] Effect of nanoparticle content on the microstructural and mechanical properties of nano-SiC dispersed bulk ultrafine-grained Cu matrix composites [J].

Akbarpour, M. R. ;

Salahi, E. ;

Hesari, F. Alikhani ;

Kim, H. S. ;

Simchi, A. .

MATERIALS & DESIGN, 2013, 52 :881-887

[2] DISLOCATION GENERATION DUE TO DIFFERENCES BETWEEN THE COEFFICIENTS OF THERMAL-EXPANSION [J].

ARSENAULT, RJ ;

SHI, N .

MATERIALS SCIENCE AND ENGINEERING, 1986, 81 (1-2) :175-187

[3] On the role of processing parameters in producing Cu/SiC metal matrix composites via friction stir processing: Investigating microstructure, microhardness, wear and tensile behavior [J].

Barmouz, Mohsen ;

Givi, Mohammad Kazem Besharati ;

Seyfi, Javad .

MATERIALS CHARACTERIZATION, 2011, 62 (01) :108-117

[4] Extraordinary strengthening effect of carbon nanotubes in metal-matrix nanocomposites processed by molecular-level mixing [J].

Cha, SI ;

Kim, KT ;

Arshad, SN ;

Mo, CB ;

Hong, SH .

ADVANCED MATERIALS, 2005, 17 (11) :1377-+

[5]

Chen P, 2016, IN SITU SYNTHESIS OF, DOI [10.1021/jp903821n.10842-6, DOI 10.1021/JP903821N.10842-6]

[6]

Chen TY, 2016, SCI REP-UK, V6, DOI [10.1038/srep33486, 10.1038/srep24253, 10.1038/srep20001, 10.1038/srep20335]

[7] The effect of sintering temperature on some properties of Cu-SiC composite [J].

Efe, G. Celebi ;

Yener, T. ;

Altinsoy, I. ;

Ipek, M. ;

Zeytin, S. ;

Bindal, C. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2011, 509 (20) :6036-6042

[8] Mechanical properties and thermal conductivity of graphene reinforced copper matrix composites [J].

Gao, Xin ;

Yue, Hongyan ;

Guo, Erjun ;

Zhang, Hong ;

Lin, Xuanyu ;

Yao, Longhui ;

Wang, Bao .

POWDER TECHNOLOGY, 2016, 301 :601-607

[9] Stacking faults and crystallite size in mechanically alloyed Cu-Co [J].

Gayle, FW ;

Biancaniello, FS .

NANOSTRUCTURED MATERIALS, 1995, 6 (1-4) :429-432

[10] Effects of nanotube content on thermal and mechanical properties of NT@Cu/Ag@GF/Al composites [J].

Han, Xiaopeng ;

Huang, Ying ;

Gao, Qiao ;

Fan, Rui ;

Peng, Xuanyi .

JOURNAL OF ALLOYS AND COMPOUNDS, 2018, 766 :594-600

← 1 2 3 →