LiNi_0.5Mn_1.5O₄ is one of the promising cathode materials for high-energy Li-ion batteries. The development of a low-cost and environmental-friendly synthetic method of the LiNi_0.5Mn_1.5O₄ powder is an important topic for large scale production. In this paper, we have prepared LiNi_0.5Mn_1.5O₄ granules consisting of nanoparticles by a simple mechanical method using an attrition-type mill. The formation mechanism of LiNi_0.5Mn_1.5O4 granules was investigated from the powder properties of products prepared during the mechanical treatment of starting materials. The initial step of this formation reaction is a pulverization of starting materials. With increasing treatment time, the nano-sized LiNi_0.5Mn_1.5O₄ particles are formed and then these particles are granulated with the size of few micrometers. The charge and discharge properties of cathodes made from the prepared LiNi_0.5Mn_1.5O₄ granules were also tested. The present work may lead to the development of a scalable synthetic method of high-purity powders by the simple mechanical process at room temperature.

Orally disintegrating tablets（ODT） are collapsed by saliva without the assistance of water and facilitates the taking of drugs. However, the increase of tablet strength promotes the increase of oral disintegration time of ODT. The purpose of this study was to clarify the significant properties of diluent powders in ODT to obtain both high tablet strength and short disintegrating time simultaneously. We focused on water （saliva） permeability into tablets and swelling behavior, and attempted to control them by the selection of various binders as well as the surface modification of hydrophobic powders. As a result, the increase of tablet porosity by using high binding binders to maintain high tablet strength and the surface hydrophilic modification on the hydrophobic particles, promoted water permeability. Moreover, the swelling ability of disintegrants provided a greater contribution than their wicking ability to obtain shorter disintegrating time.

This paper reviews our proposed simulation method for permanent magnet particles with consideration of magnetic hysteresis and magnetic anisotropy. The numerical simulation was performed to visualize the orientation behavior of permanent magnet particles in a pulsed-magnetic field. The simulation result revealed that when the pulsed-magnetic field was applied, the particles were oriented in the direction of the magnetic field. After the pulsed-magnetic field was removed, degree of orientation was decreased due to residual magnetization. In this manner, the proposed simulation model will be useful tool to analyze the magnetic-aligned compaction process.