摘要
在分析微波场中 SrTiO3化学合成体系与电磁场相互作用的基础上 ,探讨合成体系在微波场中的加热机制和影响升温的主要因素（如合成体系的介电性质、保温材料的结构、生坯的致密度等） .结果表明 ,TiO2和 SrCO3在低温阶段对体系的升温速率的贡献相接近 ;高温阶段体系升温主要是 TiO2的贡献 ,同时产物对升温有较大的影响 .微波合成与常规合成在加热方式上的明显不同，对合成过程、合成时间等影响较大 .
Base on the analyses of the interaction between synthesis system materials and microwave field,the heating mechanism in the microwave field was studied.The heating rates of the synthesis system were mainly determined by SrCO3 and TiO2 during low temperature range,and by TiO2 and SrTiO3 at high temperatures.The results show that the heating effects in microwave field are guite different from that in conventional furnace.The heating effect of the system in the microwave field which was influenced by several factors including dielectric properties of the synthesis's system and thermal insulate structures was discussed in detail.
出处
《物理化学学报》
SCIE
CAS
CSCD
北大核心
2000年第12期1067-1072,共6页
Acta Physico-Chimica Sinica
基金
国家自然科学基金!(59602005)
教育部骨干教师计划
武汉市 "晨光 "计划资助!(965001037-17)
关键词
微波加热
钛酸锶
固体化学合成
热过程
SrTiO3, Microwave heating, Dielectric property, Solid chemical react
