摘要
本文借助差热分析、加热失重和烧结收缩变化研究了(LiNa)NbO_3-BiFeO_3部分固溶体陶瓷的合成反应和致密化烧结过程,对陶瓷在不同条件下烧结后的显微结构和陶瓷性能作了检测。实验结果表明该类致密陶瓷可在很宽的温度范围内800～950℃制得。其晶粒尺寸在2～3μm的范围。对先前工作中发现的致密陶瓷的湿敏特性作了叙述。同时图示了材料的表面湿敏模型,并讨论了用于湿敏传感器的潜在可能。
The synthe is reaction and sintering densification processes of(LiNa) NbO_3-BiFeO_8 sold solution ceramics were studied by DTA and TG thermal analysis and sintering shrinkage variat- ions. The microstruc tur(?)s and properties of ceramics sintered in different firing conditions were determined. The experimental resnlts indicated that those dense ceramics could be obtained by sintering in a wide temperature range of 800～950 ℃. The grain size is in the range of 2 ～3μm. The humidity sensing characteristics of dense ceramics discovered in previous studies werd deseribed. Their surface humidity sensing model were illustrated and the potential application possibility for humidity sensor were discussed.
出处
《功能材料》
EI
CAS
CSCD
1993年第1期43-50,共8页
Journal of Functional Materials
关键词
铌酸钠锂
铁酸铋
湿敏陶瓷
lithium sodium niobate
bismuth ferritc
humidity sensing ceramics
