【摘要】 采用新颖的准气相反应法,合成出了球形度好、表面光滑的ZrO₂微球.通过对产物的SEM,TEM和XRD表征,研究了煅烧温度对ZrO₂球结构特性的影响.结果表明:经600～800℃煅烧后,生长完好的ZrO₂球,其显微结构为均匀多孔结构,纳米晶粒呈花生样的长条形状;ZrO₂球的相由主要的立方相和少量的四方相组成.更多还原

【Abstract】 The ZrO₂ microspheres with a smooth surface have been successfully synthesized by a novel quasi-gaseous state reaction method. The scanning electron microscopy, transmission electron microscopy, and X-ray diffraction have been used to evaluate the structure of synthesized ZrO₂ microspheres. The calci-nation temperature has a significant effect on the structure: after they were calcinated at 600～800 ℃, the synthesized ZrO₂ microspheres possess the homogeneous porous structure with peanut-like nano-grains, which consist of major c-ZrO₂ and minor t-ZrO₂ phases.更多还原