化学法制备ZA复合粉体的研究

Study on Alumina-zirconia Composite Powder Prepared by Chemical Methods

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.