A METHOD FOR PREPARING DIELECTRIC RESONATORS OF ARBITARY SHAPES

摘要

A method for preparing dielectric resonator with arbitrary shapes, is described herein. Initially, the ceramic composition (Zro.8Sn0.22TiO4ceramic powder with ZrO2, TiO2 and SnO2 as initial ingredients) can be prepared through a mechanical milling (e.g., a ball milling) and the particle size and shape are optimized so as to obtain high density ceramic bodies. The ceramic composition can be mixed in water along with a suitable dispersant, monomer(s) and cross linker in order to form a slurry composition. The slurry can be molded into a mold of desired shape and polymerization of slurry in the mold can be triggered. The polymerized product can be subjected to controlled drying process in order to get rid of the excess water thus to obtain firm green ceramic body. The firm green ceramic body can be subjected to machining or grinding to obtain a net-shaped component with fine surface finish. The final product can heat treated in a controlled fashion to remove polymers and to increase the density of the product.