| 溶胶-凝胶法制备CaBi_4Ti_4O_(15)基陶瓷粉体 |
| |
| 引用本文： | 何新华,叶常茂,陈志武,胡星. 溶胶-凝胶法制备CaBi_4Ti_4O_(15)基陶瓷粉体[J]. 稀有金属材料与工程, 2010, 0(Z2) |
| |
| 作者姓名： | 何新华 叶常茂 陈志武 胡星 |
| |
| 作者单位： | 华南理工大学; |
| |
| 基金项目： | 广东省科技计划项目资助(2007A010500012) |
| |
| 摘 要： | 采用溶胶凝-胶法制备V掺杂的铋层复合物CaBi4Ti3.95V0.05O15.025(CBTVO)陶瓷粉体,利用TDA/TG和IR光谱分析前驱体凝胶的变化,利用XRD和SEM分析和观察不同热处理温度下CBTVO粉体的相组成和颗粒形貌,利用EDX测定粉体颗粒的元素分布,并对CaBi4Ti4O15类钙钛矿主晶相的形成过程和机制进行探讨。结果表明:有机物在300℃之前基本上完全排除,铋层类钙钛矿结构的主晶相在500℃开始形成,并含有少量的Bi2O3相。Bi2Ti2O7相在590℃左右出现,当热处理温度高于800℃后则完全消失。热处理后的粉体颗粒呈片状,900℃热处理后粉体颗粒尺寸介于200～600nm之间,且各元素分布接近于化学计量比。
|
| 关 键 词： | 铋层复合物 溶胶-凝胶 热处理 |
CaBi_4Ti_4O_(15) Based Ceramic Powders Prepared by the Sol-Gel Process |
| |
| He Xinhua,Ye Changmao,Chen Zhiwu,Hu Xing. CaBi_4Ti_4O_(15) Based Ceramic Powders Prepared by the Sol-Gel Process[J]. Rare Metal Materials and Engineering, 2010, 0(Z2) |
| |
| Authors: | He Xinhua Ye Changmao Chen Zhiwu Hu Xing |
| |
| Affiliation: | He Xinhua,Ye Changmao,Chen Zhiwu,Hu Xing (South China University of Technology,Guangzhou 510640,China) |
| |
| Abstract: | Vanadium modified bismuth-layered compound CaBi4Ti3.95V0.05O15.025 (abbreviated as CBTVO) ceramic powders were fabricated by the sol-gel process. The thermal decomposition of the precursor was characterized by DTA/TG and IR spectra. Phase composition and morphology of CaBi4Ti3.95V0.05O15.025 powders heat-treated at different temperatures were analyzed by XRD and SEM. The element distributions on the powders were determined by EDX. The process and mechanism of forming the psudo-perovskite main crystalline ph... |
| |
| Keywords: | bismuth-layered compound sol-gel heat-treatment |
| 本文献已被 CNKI 等数据库收录！ |
|
