The Influence of the Dispersion Method on the Microstructure and Properties of MWCNTs/AA6061 Composites

Archives of Metallurgy and Materials

P. M. Nuckowski¹  A. J. Nowak¹  M. Macek¹  L. A. Dobrzański¹  B. Tomiczek¹ 

[1] SILESIAN UNIVERSITY OF TECHNOLOGY, INSTITUTE OF ENGINEERING MATERIALS AND BIOMATERIALS, FACULTY OF MECHANICAL ENGINEERING, 18A KONARSKIEGO STR., GLIWICE 44-100, POLAND

关键词: Keywords: nanocomposites;    powder metallurgy;    mechanical milling;    carbon nanotubes;    aluminium alloys;   

DOI  :  10.1515/amm-2016-0203

学科分类：金属与冶金

来源: Akademia Gorniczo-Hutnicza im. Stanislawa Staszica / University of Mining and Metallurgy

【 摘 要 】

The aim of this work was to study the effect of different methods of multi-walled carbon nanotubes (MWCNTs) dispersion, and their influence on the microstructure and properties of aluminium alloy matrix composites produced using the powder metallurgy techniques, such as powder milling/mixing and hot extrusion. The main problem in the manufacturing of nanocomposites is the homogeneous distribution of MWCNTs in the metal matrix. To achieve their proper distribution a high-energy and low-energy mechanical milling, using a planetary ball mill, and mixing, using a turbulent mixer, were applied. Studies have shown that composite materials prepared using milling and extrusion have a much better dispersion of the reinforcing phase, which leads to better mechanical properties of the obtained rods. The low-energy mechanical mixing and mixing using the turbulent mixer neither change the powder morphology nor lead to adequate dispersion of the carbon nanotubes, which directly affects the resulting properties.

【 授权许可】

Unknown