Analysis the effect of TiO2 addition on sintering, physical mechanical behavior of porcelain insulating material

Abstract

The present study is aimed to develop a high strength porcelain insulating material from locally available low cost raw porcelain materials by reinforcement of TiO2 (0 to 10 in wt.%) as a substitute replacing ZrO2 in the base porcelain material composition. Base porcelain composition was prepared from the mixture of kaolin, ball clay, quartz, feldspar. Pellets were prepared by applying a constant pressure of 170 MPa using isostatic hydraulic press with holding for a period of 10 min. Different characterizations techniques such as; X-ray diffraction (XRD) and scanning electron microscopy (SEM) used to evaluate the structural and micro structural changes, respectively by increasing the concentration of TiO2 (0–10 wt.%) and decreasing ZrO2 (10–0 wt.%) concentration at the base composition of porcelain composition. The measurement of mechanical strength and physical behavior of TiO2 and ZrO2 were analyzed for all the samples prepared with different compositions at sintering temperature (1250 and 1350 °C) with soaking period of 2 h. The base porcelain composition with 5 wt.% TiO2-doped concentration yields the better physical and mechanical strength. The investigated TiO2 based porcelain material using in refractory and high-temperature insulating applications where severe thermal shock with high mechanical features are required.