CaTiO_(3) nano ceramic for NTCR thermistor based sensor application
作者机构：School of Electrical EngineeringKIIT UniversityBhubaneswar-751024India Department of Electrical and Electronics EngineeringTrident Academy of TechnologyBhubaneswar-751024India School of Applied SciencesKIIT UniversityBhubaneswar-751024India
出 版 物：《Journal of Advanced Ceramics》 (先进陶瓷（英文）)
年 卷 期：2014年第3卷第2期
页 面：117-124页
核心收录：
学科分类：080702[工学-热能工程] 08[工学] 0807[工学-动力工程及工程热物理]
主 题：CaTiO_(3) thermistor sensitivity index temperature coefficient
摘 要：It is possible to fabricate highly sensitive NTCR(negative temperature coefficient of resistance)thermistor using nano crystalline CaTiO_(3) synthesized by high energy ball *** shaped green pellets were prepared and effects of sintering on the disc pellets were studied as thermistor by sintering the samples at 1000℃,1100℃and 1200℃.The as-prepared samples were characterized by X-ray diffraction(XRD),impedance analysis and electrical *** resistivity of the prepared samples varies predictably with temperature:this makes them promising material for temperature *** experimental results prove that nano crystalline CaTiO_(3) ceramic is one kind of thermistor with exponential negative temperature coefficient of resistance in the temperature range of 300-500℃.The samples have the advantages of rapid response,high sensitivity and capability to withstand thermal surges over the temperature range of 300-500℃.Resistance-temperature characteristics are described by thermistor equation with thermistor constant around 4003 K to 10795 K and thermal coefficient of resistanceαaround-1%/℃to-13%/℃.The activation energy is in the range of 0.34-0.93 *** observed thermistor parameters are found to be comparable with many of the known thermistor *** suggests that the electrical properties can be adjusted to desirable values by controlling the temperature *** influence of fabrication process of disc thermistor and electrical properties are *** study shows the potential of nano crystalline CaTiO_(3) to act as an NTCR material for thermistor applications.
维普期刊数据库