QQ客服 官方微博 反馈留言

	ZnO varistors with high voltage gradient and low leakage current by doping rare-earth oxide
	Hu Jun ; He JinLiang ; Lin Yuan-Hua
	2010-10-12 ; 2010-10-12
关键词	Practical Experimental/ arresters gas insulated substations grain boundaries grain size II-VI semiconductors leakage currents power semiconductor devices semiconductor doping sintering varistors wide band gap semiconductors zinc compounds/ varistors high voltage gradient low leakage current doping rare-earth oxide gas-insulated substation potential distribution metal-oxide surge arresters structural parameters electrical parameters rare-earth oxide additives spinel phases grain-boundary grain size nonlinearity coefficient sintering ZnO-Bi/sub 2/O/sub 3/-Sb/sub 2/O/sub 3/-MnO-Cr/sub 2/O/sub 3/-Co/sub 2/O/sub 3/-SiO/sub 2/-Jk/sub 2/O/sub 3// B2560Z Other semiconductor devices B2560P Power semiconductor devices B8375 Substations B8140C Protection apparatus B2550B Semiconductor doping B2120 Resistors/ Bi2O3/int Co2O3/int Cr2O3/int Sb2O3/int SiO2/int Bi2/int Co2/int Cr2/int Sb2/int MnO/int ZnO/int O3/int O2/int Bi/int Co/int Cr/int Mn/int Sb/int Si/int Zn/int O/int Bi2O3/bin Co2O3/bin Cr2O3/bin Sb2O3/bin SiO2/bin Bi2/bin Co2/bin Cr2/bin Sb2/bin MnO/bin ZnO/bin O3/bin O2/bin Bi/bin Co/bin Cr/bin Mn/bin Sb/bin Si/bin Zn/bin O/bin
中文摘要	The surge arrester of 1000 kV gas-insulated substation (GIS) needs ZnO varistor with high voltage gradient to effectively improve the potential distribution along ZnO varistor column inside the metal-oxide surge arresters. In this paper, the electrical and structural parameters of ZnO varistors are changed by doping with some rare-earth oxides, and the mechanism which leads these changes is discussed. When rare-earth oxide additives are added into ZnO varistors, the growing speed is slowed down due to the stabilization of the new spinel phases formed in the grain-boundary by rare-earth oxide additives, then the size of ZnO grains is smaller, and the voltage gradient of varistor increases obviously. By adding suitable amount of oxides of metal Co and Mn, the leakage current can be effectively decreased and the nonlinearity coefficient increased. The novel ZnO varistor samples sintered with the optimal additives have a voltage gradient of 492 V/mm, and the nonlinearity coefficient of 76, but their leakage currents are only 1 mu A.
语种	英语
出版者	Springer Netherlands ; Netherlands
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/82464]
专题	清华大学
推荐引用方式 GB/T 7714	Hu Jun,He JinLiang,Lin Yuan-Hua. ZnO varistors with high voltage gradient and low leakage current by doping rare-earth oxide[J],2010, 2010.
APA	Hu Jun,He JinLiang,&Lin Yuan-Hua.(2010).ZnO varistors with high voltage gradient and low leakage current by doping rare-earth oxide..
MLA	Hu Jun,et al."ZnO varistors with high voltage gradient and low leakage current by doping rare-earth oxide".(2010).

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。