Effect of Ball Milling on the Defeat of Few-Layer Graphene and Properties of Copper Matrix Composites

被引：46

作者：

Cui, Ye ^{[1
]}

Wang, Lidong ^{[1
]}

Li, Bin ^{[1
]}

Cao, Guojian ^{[2
]}

Fei, Weidong ^{[1
,3
]}

机构：

[1] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China

[2] Harbin Univ Sci & Technol, Sch Mat Sci & Engn, Harbin 150040, Peoples R China

[3] Qinghai Univ, Sch Mech Engn, Xining 810016, Peoples R China

来源：

ACTA METALLURGICA SINICA-ENGLISH LETTERS | 2014年 / 27卷 / 05期

关键词：

Copper; Composites; Ball milling; Mechanical properties; Conductivity; THERMAL-CONDUCTIVITY;

D O I：

10.1007/s40195-014-0156-x

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Graphene-reinforced copper composites recently have attracted more attention, since they exhibited excellent mechanical properties and could be used widely in many fields. Few-layer graphene (FLG) and copper powder were mixed by ball milling to produce homogeneous composite powders. Then, FLG-reinforced copper composites (FLG/Cu) were fabricated by spark plasma sintering (SPS) using the composite powders with a FLG volume fraction of 2.4 vol%. The effects of the rotating speed and the time of ball milling were analyzed based on the microstructure evolution and properties of the FLG/Cu composites. Obvious strengthening effect of FLG was found for the composites, and the conductance of the composite reaches 70.4% of IACS. The yield strength of the composite produced by ball milling at a speed of 100 r/min for 4 h is 376 MPa, which is 2.5 times higher than that of copper and higher than that of copper composite enhanced by 5 vol% CNTs (360 MPa). The defects produced in FLG with the increase of rotating speed and time could reduce the mechanical and conductive properties of the composites.

引用

页码：937 / 943

页数：7

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