溶胶-凝胶/溶剂热法制备致密BaTiO_3陶瓷纤维

Preparation of Dense BaTiO_3 Ceramic Fiber by a Sol-Gel and Solvothermal Route

采用醋酸钡和异丙醇钛为原料,邻苯二酚作钛醇盐的稳定剂,制备了BaTiO_3凝胶纤维；采用正己烷作溶剂,将BaTiO_3凝胶纤维在180℃条件下溶剂热处理12h；对预处理过的BaTiO_3纤维以1℃/min的升温速率热处理至1100℃,得到致密的BaTiO_3陶瓷纤维．对所得的BaTiO_3陶瓷纤维采用红外光谱(IR),X射线衍射(XRD)和扫描电子显微镜(SEM)等一系列手段进行表征．

Dense BaTiO3 ceramic fibers were obtained by solvothermal treatment of the green gel fibers, which were drawn from a sol using barium acetate hydrate and catechol-complexed titanium isoproposide as starting materials, at 180℃ for 12h in n-hexane following a heat process to 1100℃ with a heating rate of 1℃/min for crystallization. The as-synthesized BaTiO3 ceramic fibers were characterized by X-ray diffraction （XRD）, Infrared （IR） spectra and scanning electron microscope （SEM） techinques.