The Influence of High-Energy Ball Milling Parameters on the Traditional W-Type Ba-Hexaferrite Properties

Abstract

The main task of our work was to study the influence of high energy ball milling on the process of W-type hexaferrite material production and to compare the structural, morphological and magnetic features of the different manufacturing ways. The products are analyzed mainly by XRD, SEM and TEM methods. It was shown that high energy ball milling can be used to enhance the synthesis of W-type Ba-hexaferrite due to the much smaller crystallite sizes and their larger surfaces that are produced by the milling process and due to the activation of these surfaces.

CHAPTER 10. Technical Implications of Organic Syntheses in Ball Mills

“…The disks rotate in opposite directions and, therefore, the movement of the milling beakers is similar to the rotation of a planet around their central celestial body in the sun system. 49,51,52 The grinding bodies inside the milling beakers follow typical trajectories that recently have been monitored by video analysis and simulated with the help of the discrete element method (DEM; Figure 10.4). 53,54 Despite improvements it is still complicated to calculate the specific trajectories of the milling balls inside the beakers due to overlap of the two opposite rotation directions of the sun and the planetary disks.…”

Effects of Nano-Micro Hierarchical Architecture Intraparticle Connectivity and Carbon Black-LiNi1/3Mn1/3Co1/3O2 Interaction: An Energy-Power Tradeoff In Lithium-Ion Batteries

“…where m b is mass of the ball, w p is the rotation speed of planetary mill disc, K a is coefficient depending on the elasticity of the collision and R p is planetary mill disc radius). 25,26 Two sets of experiments were designed to investigate the effect of ball-milling parameters on premixing NMC and CB. In SET-1, the impact energy was kept constant by maintaining constant rotation speed (w p ), and the frequency of collision was increased by increasing the powder to ball ratio.…”