Fabrication of Ceramic Materials through Building Up Block Particles

Abstract

Fabrication of ceramic materials has been developed through building up block particles. One of the commonest process of building blocks is a sintering process, in which dense sintered bodies are fabricated via building up particles. This work shows a different type of building blocks. Oriented ZnO seed layers composed of hexagonal plate-like ZnO particles were prepared by dip-coating convective self-assembly method through adjusting the particle volume fraction in suspension and the substrate withdrawal rate. Oriented ZnO rod films were fabricated by growing seed layers using a hydrothermal method. Concentration of the precursor, and hydrothermal treatment time was optimized to synthesize homogeneous ZnO rod arrays. The uniformity of the rod arrays was improved by applying a strong magnetic field (12 T) during hydrothermal treatment.