采用溶胶-凝胶法和共沉淀法两种化学方法制备了氧化铝-氧化锆复合粉体,并对其进行表征:采用激光粒度分析仪测定粉体粒径及粒度分布,X射线衍射仪(XRD)进行矿物相组成分析,扫描电子显微镜(SEM)观察微观下氧化铝与氧化锆的分布情况.结果表明:溶胶-凝胶法制备的粉体相对于共沉淀法制备的粉体粒度较细,四方相氧化锆含量高,而且氧化铝和氧化锆分散较均匀.
Alumina-zirconia composite powders were prepared by two chemical methods, which were Sol-gel method and co-precipitation method, and then characterized by some equipments: size of the granularity was expressed by laser particle size analyzer, phase composition was analyzed by X-ray diffraction (XRD) and distribution of alumina and zirconia at microscopic view was observed by scanning electron microscope (SEM). The experimental results show that compared with co-precipitation method, the powder from Sol-gel method was preferable, of which the granularity was much thinner, the content of tetragonal zirconia was much higher and the distribution of alumina and zirconia was much evener.
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