Research on synthesizing technology of nano-Sm₂Zr₂O₇

The influence of liquor density, temperature and pH value on nano-Sm₂Zr₂O₇ which were synthesized by coprecipitation L₉ (3³) orthogonal experiment were studied. Phase analysis and microstructures of the composite materials were investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM). Microstructures and phase composition of composites for the different experiment factors which have different influence. It showed that the liquor density is the most important effect of the property of nano-Sm₂Zr₂O₇; The constituent gap of nano-Sm₂Zr₂O₇ increases with the increases of liquor density. The constituent gap of nano-Sm₂Zr₂O₇ increases first and then drops with the the increases of temperature and pH value. The best property of nano-Sm₂Zr₂O₇ was obtained when liquor density at 0.6 mol/L, temperature at 50°C and pH value at 10.