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	Effect of treatment process on the structure and properties of Sr/sub 0.48/Ba/sub 0.24/Ca/sub 0.28/TiO/sub 3/-based varistor ceramics
	Yuxing Xu ; Zilong Tang ; Zhongtai Zhang ; Lihai Xu
	2010-05-10 ; 2010-05-10
关键词	Practical Experimental/ barium compounds calcium compounds ceramics crystal defects doping materials preparation oxidation permittivity strontium compounds varistors/ treatment process varistor ceramics capacitor-varistor multifunctional characteristics solid method oxidation temperature structure property electrical property nonlinearity coefficient defect reactions dopant 1 mA 850 C 900 C 4 h Sr/sub 0.48/Ba/sub 0.24/Ca/sub 0.28/TiO/sub 3// A8120L Preparation of ceramics and refractories A6170T Doping and implantation of impurities A7720 Dielectric permittivity B0540 Ceramics and refractories (engineering materials science) B2120 Resistors/ current 1.0E-03 A temperature 1.12E+03 K temperature 1.17E+03 K time 1.4E+04 s/ Sr0.48Ba0.24Ca0.28TiO3/ss Ba0.24/ss Ca0.28/ss Sr0.48/ss TiO3/ss O3/ss Ba/ss Ca/ss Sr/ss Ti/ss O/ss
中文摘要	Sr/sub 0.48/Ba/sub 0.24/Ca/sub 0.28/TiO/sub 3/-based varistor ceramics with an excellent capacitor-varistor multifunctional characteristics (V/sub 1mA/ = 11 ~ 49 v.mm/sup -1/, alpha = 6.1 ~ 11.3, epsiv /sub r max/ = 3.5 * 10/sup 5/ tan delta /sub min/ = 5%) were prepared using conventional solid method. The effect of oxidation temperature and time on structure and electrical properties were investigated. The results show that with increasing the oxidation temperature from 800 degrees C to 900 degrees C, the varistor voltage V/sub 1mA/ and non-linearity coefficient alpha defining varistor characteristics increase linearly, while the dielectric constant epsiv /sub r/ and dielectric loss tan delta decrease linearly. There exists an optimum alpha value when the specimens were oxidized at 850 degrees C for 3h. This behavior was explained through various defect reactions of dopants.
语种	英语 ; 英语
出版者	Trans Tech Publications ; Switzerland
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/21717]
专题	清华大学
推荐引用方式 GB/T 7714	Yuxing Xu,Zilong Tang,Zhongtai Zhang,et al. Effect of treatment process on the structure and properties of Sr/sub 0.48/Ba/sub 0.24/Ca/sub 0.28/TiO/sub 3/-based varistor ceramics[J],2010, 2010.
APA	Yuxing Xu,Zilong Tang,Zhongtai Zhang,&Lihai Xu.(2010).Effect of treatment process on the structure and properties of Sr/sub 0.48/Ba/sub 0.24/Ca/sub 0.28/TiO/sub 3/-based varistor ceramics..
MLA	Yuxing Xu,et al."Effect of treatment process on the structure and properties of Sr/sub 0.48/Ba/sub 0.24/Ca/sub 0.28/TiO/sub 3/-based varistor ceramics".(2010).

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