Ultrafine lead titanate (PbTiO3) powders intetragonal form have been successfully prepared via threeprocessing routes, namely, conventional co-precipitation,microemulsion-refined freeze drying, and microemulsion-refined co-precipitation. The formation process of leadtitanate from the resulting precursors was monitored usingtechniques such as thermal analyses and X-ray diffraction forphase identification. It was found that the twomicroemulsion-refined processing routes led to a lowerformation temperature for lead titanate than that observed inthe conventional co-precipitation route. The three leadtitanate powders have also been compared for particle andagglomerate size distributions and specific surface area. Itappears that the microemulsion-refined co-precipitation is thetechnique which results in the formation of the finest leadtitanate powder amongst the three processing routesinvestigated in the present work.
展开▼
