Characterization of Ni-CNTs Nanocomposites Produced by Ball-Milling

被引：8

作者：

Carneiro, Iris ^{[1
]}

Viana, Filomena ^{[1
,2
]}

Vieira, Manuel F. ^{[1
,2
]}

Fernandes, Jose Valdemar ^{[3
]}

Simoes, Sonia ^{[1
,2
]}

机构：

[1] Univ Porto, Dept Met & Mat Engn, CEMMPRE, P-4200465 Porto, Portugal

[2] INEGI Inst Sci & Innovat Mech & Ind Engn, P-4200465 Porto, Portugal

[3] Univ Coimbra, Dept Mech Engn, CEMMPRE, Rua Luis Reis Santos, P-3030788 Coimbra, Portugal

来源：

METALS | 2020年 / 10卷 / 01期

关键词：

metal matrix nanocomposites; carbon nanotubes; nickel; ball-milling; microstructure; electron microscopy; CARBON NANOTUBE NANOCOMPOSITES; MECHANICAL-PROPERTIES; MATRIX COMPOSITES; MICROSTRUCTURAL CHARACTERIZATION; DISPERSION; REFINEMENT; EVOLUTION; CORROSION; DUCTILITY; STRENGTH;

D O I：

10.3390/met10010002

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This research focuses on the characterization of a metal matrix nanocomposite (MMNC) comprised of a nickel matrix reinforced by carbon nanotubes (CNTs). The aim of this study was to characterize Ni-CNTs nanocomposites produced by powder metallurgy using ball-milling. CNTs were initially untangled using ultrasonication followed by mixture/dispersion with Ni powder by ball-milling for 60, 180, or 300 min. The mixtures were cold-pressed and then pressureless sintered at 950 degrees C for 120 min under vacuum. Their microstructural characterization was mainly performed by optical microscopy (OM), scanning electron microscopy (SEM), and electron backscatter diffraction (EBSD). The mechanical properties were evaluated by Vickers microhardness. The results indicate that combining ultrasonication and ball-milling can successfully produce Ni-CNTs nanocomposites. The ball-milling time has a significant effect on both the CNT dispersion and the final nanocomposite microstructure.

引用

页数：13

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