Polymer/CeO2-Fe3O4 multicomponent core-shell particles for high-efficiency magnetic-field-assisted polishing processes

Abstract

Novel multicomponent core-shell particles have been developed for use in high-efficiency magnetic-field-assisted polishing processes. The core-shell particles consist of core polymer particles covered by a shell composed of magnetic particles and abrasive grains. The particle preparation process involves agitation of the particle mixture in a dry ambient atmosphere with an appropriate controlled temperature, which is a simple and low-cost technique compared with the conventional sintering and granulation process used for the preparation of magnetic abrasives. Although the prepared polymer/CeO2-Fe3O4 multicomponent core-shell particles exhibit inferior glass-polishing performance compared to CeO2 abrasives without an applied magnetic field, they reveal a markedly higher removal rate in the presence of the magnetic field than that exhibited by conventional abrasives and mixed compounds (Fe3O4 and CeO2). Furthermore, polishing using the core-shell particles with the magnetic field shows the potential to achieve a superior material surface quality compared to conventional polishing.