期刊 钛镁掺杂对氧化铝陶瓷的相组成、微观形貌及沿面闪络特性的影响  

Effect of Titanium-Magnesium Doping on Phase Composition,Microstructure and Surface Flashover Characteristics of Alumina Ceramics

作  者:姚舜 王友法[1] 

YAO Shun;WANG Youfa(State Key Laboratory of Advanced Technology for Material Synthesis Processing,Wuhan University of Technology,Wuhan 430070,China)

机构地区:[1]武汉理工大学材料复合新技术国家重点实验室,武汉430070

出  处:《硅酸盐通报》2020年第9期2964-2969,2986,共7页Bulletin of the Chinese Ceramic Society

Effect of Titanium-Magnesium Doping on Phase Composition,Microstructure and Surface Flashover Characteristics of Alumina Ceramics

基  金:国家自然科学基金(51772233);武汉市科技计划项目(2017060201010191);湖北省技术创新专项重大项目(2019ACA130)。

摘  要:针对高电压绝缘系统中易发生沿面闪络现象的绝缘材料,设计了一种通过掺杂MgO和TiO 2来提高氧化铝陶瓷闪络电压的方案。通过高温烧结,在1500℃下制备了掺杂不同含量TiO 2和MgO的氧化铝陶瓷,并研究了钛镁掺杂对氧化铝陶瓷相组成、断面微观结构、介电常数、电阻率和沿面闪络电压的影响。结果表明,TiO 2和MgO的共掺入能降低氧化铝陶瓷的烧结温度,促进氧化铝陶瓷晶粒的均匀性,且在一定程度上提高氧化铝陶瓷的沿面闪络电压。

A scheme to increase the flashover voltage of alumina ceramics by doping MgO and TiO 2 was designed for insulating materials that were prone to surface flashover in high-voltage insulation systems.Through high temperature sintering,alumina ceramics doped with different content of TiO 2 and MgO were prepared at 1500℃,and the effect of titanium-magnesium doping on the phase composition,section microstructure,dielectric constant,resistivity and surface flashover voltage of alumina ceramics were studied.The results show that the mixture of TiO 2 and MgO reduce the sintering temperature of alumina ceramics,promote the uniformity of alumina ceramics grains,and increase the surface flashover voltage of alumina ceramics to some extent.

关 键 词:氧化铝陶瓷 钛镁掺杂 沿面闪络 烧结 

alumina ceramic titanium-magnesium doping surface flashover sintering 

分 类 号:TQ174[化学工程—陶瓷工业]

 

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