STUDY ON THE APPLICATION OF TECHNICAL CERAMIC MATERIALS ON BASE PAPER USING COATING TECHNOLOGIES IN LAB SCALE

Abstract

The present investigation deals with the preparation of the technical ceramic materials using the . coating technique on paper to produce thin ceramic slabs or plates which have applications as membranes in energy and environmental processes. The laboratory scale techniques were used for the coating of the ceramic materials on the paper. Two types of coating colors made from SiC and Zr02 ceramics were coated on the paper to required thickness. These coated samples are sintered so that the paper is burned leading to the formation of the ceramic slabs. The various factors affecting the formation of the ceramic slabs are identified and the problems are dealt with and discussed. The effect of the particle size distribution on the thickness development with each layer of coating is discussed. Various factors that affect the ceramic slab formation after the sintering are also discussed. These factors involve the effects of sintering temperature curve, type of base paper, thickness of the samples and type of binder on the ceramic slab formation after the sintering process. The viscosities and surface tension of the various coating colors used are also measured. The strength properties of the sintered samples derived from the coating on the paper are compared to that of the samples made from the tape casting technique (only SIC is proved). The results obtained from laboratory data are found to be very interesting and seem very promising.