Reinforcing effects of carbon nanotubes in structural aluminum matrix nanocomposites

被引：172

作者：

Choi, Hyunjoo ^{[1
]}

Shin, Jaehyuck ^{[1
]}

Min, Byungho ^{[1
]}

Park, Junsik ^{[2
]}

Bae, Donghyun ^{[1
]}

机构：

[1] Yonsei Univ, Div Engn & Mat Sci, Seoul 120749, South Korea

[2] Hanbat Univ, Div Adv Mat Engn, Taejon 305719, South Korea

来源：

JOURNAL OF MATERIALS RESEARCH | 2009年 / 24卷 / 08期

关键词：

COMPOSITES;

D O I：

10.1557/JMR.2009.0318

中图分类号：

T [工业技术];

学科分类号：

120111 [工业工程];

摘要：

The reinforcing effects of carbon nanotubes (CNTs) are investigated for aluminum matrix composites. The composites present a strong bonding between CNTs and the aluminum matrix using a controlled mechanical milling process, producing a network structure of aluminum atoms around CNTs. At the same time, CNTs that are dispersed during the milling process can be located inside aluminum powders, thereby providing an easy consolidation route via thermomechanical processes. A composite containing 4.5 vol% multiwalled CNTs exhibits a yield strength of 620 MPa and fracture toughness of 61 MPa.mm(1/2), the values of which are nearly 15 and seven times higher than those of the corresponding starting aluminum, respectively.

引用

页码：2610 / 2616

页数：7

共 18 条

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[2]

Reconstruction of mono-vacancies in carbon nanotubes: Atomic relaxation vs. spin polarization [J].