Preparation of Zn₂TiO₄ by co-precipitation method and hot-isostatic pressing

Abstract

Zn₂TiO₄ powder was prepared by the co-precipitation method using an organic basic, diethylamine solution. X-ray and differential thermal analysis-thermogravimetric (DTA-TG) analyses of the dried coprecipitate showed the intimacy of mixing attained. Although crystallite size was dependent on calcining temperature, the particle size was independent. The optimum density was obtained by calcining at 800° C. The highest density which was obtained by sintering at 1150° C was about 95% theoretical with closed porosity. The pre-sintered samples were hot-isostatically sintered at 1150° C in argon for 2 h under 80 to 150 MPa without any capsule. The density of hot-isostatically sintered samples reached about 100% and they became translucent.