Particle morphology control for spherical powder fabrication using the ball milling process with DEM simulation--颗粒学报PARTICUOLOGY

Jargalsaikhan, B., Uranchimeg, K., Bor, A., Kim, K. S., & Choi, H. (2024). Particle morphology control for spherical powder fabrication using the ball milling process with DEM simulation. Particuology, 90, 41-50. https://doi.org/10.1016/j.partic.2023.11.019

Particle morphology control for spherical powder fabrication using the ball milling process with DEM simulation

Battsetseg Jargalsaikhan^a, Khulan Uranchimeg^b, Amgalan Bor^c, Kyung Sung Kim^{a d}, Heekyu Choi ^{a b d e *}

a Research Institute of Future Convergence, 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 Chemical and Biological Engineering, School of Engineering and Applied Sciences, National University of Mongolia, Ulaanbaatar 14200, Mongolia
d Department of Mechatronics Convergence Engineering, College of Future Convergence, Changwon National University, Changwon, Gyoungnam 641-773, Republic of Korea
e Graduate School of Convergence on Culture Technology, Changwon National University, Changwon, Gyoungnam 641-773, Republic of Korea

10.1016/j.partic.2023.11.019

Volume 90, July 2024, Pages 41-50

Received 8 August 2023, Revised 16 October 2023, Accepted 21 November 2023, Available online 2 December 2023, Version of Record 19 December 2023.

E-mail: hkchoi99@changwon.ac.kr

Highlights

• Spherical characteristics of copper studied.

• Effect of ball diameter explored.

• Quantitative analysis using DEM simulation.

Abstract

Characteristics of spherical particles on copper powder and changing sizes were studied in a ball mill under various experimental conditions, such as different ball diameters, high rotation speeds, and milling times, using a discrete element method (DEM) simulation. This experiment has investigated the characteristics of spherical particle morphology evolution involved in the mechanical alloying of copper powder. The morphological evolution of the copper particle was analyzed using scanning electron microscopy (SEM). A spherical copper particle was shown with a roundness value using imageJ software. The DEM was used to simulate the ball motion in a planetary ball mill, and the impact energy and shear energy generated during the collision were analyzed to estimate the contact number between the ball and the ball wall. Therefore, as the size of the ball decreased, the number of ball-to-ball and ball-to-wall contacts increased accordingly, and the spherical shape of the copper powder changed.

Graphical abstract

Keywords

Planetary ball mill; DEM simulation; Spherical particle morphology; Copper powder; Ball diameter

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