DEM simulation and characterization of copper and iron powders fabricated by ball milling--颗粒学报PARTICUOLOGY

Uranchimeg, K., Jargalsaikhan, B., Eui, L. S., & Choi, H. (2024). DEM simulation and characterization of copper and iron powders fabricated by ball milling. Particuology, 94, 96-108. https://doi.org/10.1016/j.partic.2024.07.011

DEM simulation and characterization of copper and iron powders fabricated by ball milling

Khulan Uranchimeg^a, Battsetseg Jargalsaikhan^b, Lee Sang Eui^c, Heekyu Choi^{a c d e *}

a Graduate School of Material Science Engineering, Changwon National University, Changwon, Gyoungnam, 641-773, Republic of Korea
b Citi University, Ulaanbaatar 14201, Mongolia
c Department of Mechatronics Convergence Engineering, College of Future Convergence, Changwon National University, Changwon, Gyoungnam, 641-773, Republic of Korea
d Graduate School of Convergence on Culture Technology, Changwon National University, Changwon, Gyoungnam, 641-773, Republic of Korea
e Research Institute of Future Convergence, Changwon National University, Changwon, Gyoungnam, 641-773, Republic of Korea

10.1016/j.partic.2024.07.011

Volume 94, November 2024, Pages 96-108

Received 29 April 2024, Revised 10 June 2024, Accepted 18 July 2024, Available online 27 July 2024, Version of Record 12 August 2024.

E-mail: hkchoi99@changwon.ac.kr

Highlights

• Shear energy and ball impaction of distribution at that per moment were determined by using a DEM simulation.

• Morphological changes in metal powders do not depend only on experimental conditions of ball milling.

• Influence of ball contact number on the particle size of the powder was investigated.

• Particle morphology and size of the powder varied depending on initial characteristics of the raw metal powder.

Abstract

In this study, the particle morphology, and size changes in copper and iron powders were investigated by using a high-energy ball mill under the same experimental conditions. The particle sizes and morphologies of the powders were examined using a particle size analyzer and scanning electron microscopy (SEM). We also used the discrete element method (DEM) to analyze the ball impaction and the shear energy during the ball milling process. It was discovered that the quantity of milling balls and rotational speed had a major impact on energy dissipation through heat and plastic deformation as well as milling efficiency. The characteristic (particle morphology and size) of the iron and copper powder were differently changed under the same experimental conditions, shear energy, and ball impaction. When the particle sizes of copper and iron powder were compared under the same experimental conditions, the copper particle size increased from 21.6 μm to 280 μm, resulting in particle agglomeration, while the iron powder particle size decreased from 154 μm to 4.35 μm.

Graphical abstract

Keywords

Copper powder; Iron powder; Ball size; Particle morphology; Particle size

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