Surface coating copper powder with carbon nanotubes using traditional and stirred ball mills under various experimental conditions--颗粒学报PARTICUOLOGY

Bor, A., Jargalsaikhan, B., Lee, J., & Choi, H. (2018). Surface coating copper powder with carbon nanotubes using traditional and stirred ball mills under various experimental conditions. Particuology, 40, 177-182. https://doi.org/10.1016/j.partic.2017.10.011

Surface coating copper powder with carbon nanotubes using traditional and stirred ball mills under various experimental conditions

Amgalan Bor ^{a b}, Battsetseg Jargalsaikhan ^{a b}, Jehyun Lee ^{a b}, Heekyu Choi ^{b c *}

a Engineering Research Center (ERC) for Integrated Mechatronics Materials and Components, Changwon National University, Changwon, Gyoungnam 641-773, Republic of Korea
b Graduate School of Material Science Engineering, Changwon National University, Changwon, Gyoungnam 641-773, Republic of Korea
c Department of Mechanics Convergence, College of Engineering, Changwon National University, Changwon, Gyoungnam 641-773, Republic of Korea

10.1016/j.partic.2017.10.011

Volume 40, October 2018, Pages 177-182

Received 22 August 2017, Revised 16 October 2017, Accepted 26 October 2017, Available online 7 March 2018, Version of Record 28 July 2018.

E-mail: hkchoi99@changwon.ac.kr

Highlights

• CNTs coating on Cu powder was performed in two types of ball mills.

• CNTs coating on Cu powder was obtained at low rotation speed.

• Cracks formed on the Cu particle surface during ball milling process.

Abstract

We investigated the effect of the raw powder properties of carbon nanotube surface coatings on metal powder, with the goal of obtaining high-quality nanocomposites. The mechanical dry coating technique was used to fabricate CNT coatings (guest particles) on the surface of copper (Cu, host) particles using a traditional ball mill and a stirred ball mill. The coatings were produced under various experimental conditions (varying rotation speed and grinding duration, with a ball diameter of 5 mm), and the effect of these conditions on the surface of the powder was determined. The coated surfaces were characterized using scanning electron microscopy and field emission scanning electron microscopy. We compared prolonged milling (48 h) at a low rotation speed (50 rpm), with a short milling period (12 h) at high rotation speed. We found that for the TBM, successful CNT coating was achieved at 50 rpm over 48 h. In contrast, for the SBM, CNT coatings were obtained after a short milling period (12 h) at low rotation speed (50 rpm).

Graphical abstract

Keywords

Nanocomposites; Traditional ball mill; Stirred ball mill; Particle coating; Carbon nanotube (CNT)

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