摘要
对不同钛酸钙化合物CaTiO3、Ca4Ti4O10和Ca3Ti2O7的生成热力学和酸溶动力学进行了研究，结果表明，烧结温度在473—2000K时，Ca4Ti3O10、Ca3Ti2O7和CaTiO3均能生成；溶出温度在273—573K时，Ca4Ti3O10、Ca3Ti2O7、CaTiO3的酸溶性逐渐减弱．溶出温度在338～358K范围内，溶出过程受化学反应控制；溶出温度在403～443K范围内，溶出过程受固膜扩散控制．．
Formation and acid solubility of different calcium titanates were studied by Gibbs free energy function method. When sintering temperature is 473-2 000 K, Ca4Ti3010, Ca3Ti207 and CaTiO3 could be produced; When leaching temperature is 273 - 573 K, the acid solubility of Ca4Ti3010, Ca3Ti207 and CaTiO3 weakens gradually. The leaching process is controled by chemical reaction in 338 - 358 K and solid membrane diffusion in 403 443 K ..
出处
《材料与冶金学报》
CAS
北大核心
2015年第3期164-169,共6页
Journal of Materials and Metallurgy
基金
国家自然科学基金项目(51174054)
关键词
钛酸钙
酸溶
热力学
动力学
合成
calcium titanate
acid solubility
thermodynamics
dynamics
synthesis
