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

Particuology 2024年第7期90卷 41-50页

作者： battsetseg jargalsaikhan Khulan Uranchimeg Amgalan Bor Kyung Sung Kim Heekyu Choi Research Institute of Future Convergence Changwon National UniversityChangwonGyoungnam 641-773Republic of Korea Graduate School of Material Science Engineering Changwon National UniversityChangwonGyoungnam 641-773Republic of Korea Department of Chemical and Biological Engineering School of Engineering and Applied SciencesNational University of MongoliaUlaanbaatar 14200Mongolia Department of Mechatronics Convergence Engineering College of Future ConvergenceChangwon National UniversityChangwonGyoungnam 641-773Republic of Korea Graduate School of Convergence on Culture Technology Changwon National UniversityChangwonGyoungnam 641-773Republic of Korea

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)*** experiment has investigated the characteristics of spherical particle morphology evolution involved in the mechanical alloying of copper *** 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 *** 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 ***,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.

关键词： Planetary ball mill DEM simulation Spherical particle morphology Copper powder Ball diameter

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

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Particuology 2018年第5期16卷 177-182页

作者： Amgalan Bor battsetseg jargalsaikhan Jehyun Lee Heekyu Choi Engineering Research Center (ERf)for Integrated Mechatronics Materials and Components Changwon National UniversityChangwonGyoungnam 641-773Republic of Korea Graduate School of Material Science Engineering Changwon National UniversityChangwonGyoungnam 641-773Republic of Korea Department of Mechanics Convergence.College of Engineering Changwon National UniversityChangwonGyoungnam 641-773Republic of Korea

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

关键词： Nanocomposites Traditional bali mill Stirred ball mill Particle coating Carbon nanotube (CNT)

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