Thermodynamic Analysis on Preparing Doped Zinc Oxide Varistor Ceramic powders by Coprecipitation Process
共沉淀法制备掺杂氧化锌压敏陶瓷粉料热力学分析

Based on the thermodynamic analysis of Men (Zn2 , Cr3 , Mn2 , Sb3 , Bi3 , Co2 )-NH3CO2---H2O systems, the curves about lgM]T-pH of Mn -NH3-CO32--H2O systems were obtained.It shows that the optimal pH is 7.0 to prepare doped zinc oxide varistor ceramic powders bycoprecipitation process, and the precipitants are NH4HCO3 and NH3.H2O.