Abstract
Formation of fibrous ZrO2 has been attempted from a suspension of monodispersed ZrO2 particles. The monodispersed zirconia particles were prepared by hydrolysis of Zr(OBu)4 in ethanol with hydrochloric acid as catalyst. Fibrous ZrO2 with about 1.5 cm of length and 71 to 151 μm of width was prepared by drying the ethanol suspension of the monodispersed zirconia particles. The crystallization and phase transformation of ZrO2 fibers by heat treatment were investigated by XRD and microstructures of the fibers were observed by SEM. The ZrO2 fibers consisted of densely packed particles. Although the as-prepared fibers were amorphous, they started to crystallize into tetragonal and monoclinic phases at around 440°C.
