Low-temperature sintering of Bi4Ti3O12 derived from a co-precipitation method
Low-temperature sintering of Bi4Ti3O12 derived from a co-precipitation method
复制标题
共沉淀法 Bi4Ti3O12 的低温烧结
DOI：
10.1016/s0167-577x(02)00636-5
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发表时间：
2002
影响因子：
3
通讯作者：
D. Yan
中科院分区：
文献类型：
--
作者：
Y. Kan;Pei;Yongxiang Li;Yi;D. Yan
采用共沉淀法制备了Bi4Ti3O12粉末，并用差热分析、X射线衍射、红外光谱、比表面积和透射电子显微镜对其进行了表征。结果表明，所制备的前驱体由10 nm左右的均匀分散粒子组成。Bi4Ti3O12相在470℃开始形成，550℃焙烧0.5h后得到纯净的Bi4Ti3O12,600℃下得到的粉末具有四方对称性和片状形貌，颗粒尺寸约为100 nm。在750℃下无压烧结1h，可获得理论密度为97.2%的Bi4Ti3O12陶瓷，表明所制备的粉末具有良好的烧结性。
Bi4Ti3O12powder was prepared by a co-precipitation method and characterized with DTA, XRD, IR, BET and TEM. The results indicated that the as-prepared precursor consisted of well-dispersed particles of about 10 nm. Bi4Ti3O12phase began to form at 470 °C, and pure Bi4Ti3O12was obtained after being calcined at 550 °C for 0.5 h. The powder obtained at 600 °C showed a tetragonal symmetry and a plate-like morphology with particle size of about 100 nm. Bi4Ti3O12ceramics with 97.2% of theoretical density can be obtained by pressure-less sintering at 750 °C for 1 h, indicating the excellent sinterability of the prepared powder.