Preparation and Performance of Ni-YSZ/YSZ Co-ceramic Using Multiple Gel-tape Casting

摘要：

　　Use starch,corn meal and activated carbon as pore-making agent,Ni-YSZ/YSZ composite ceramic green body was prepared by multiple gel-tape casting with acryloyl ammonium-polyvinyl alcohol.The specimen was sintered at 1450℃ for 4h,then reduced in hydrogen atmosphere at 800℃ for 4h,Ni-YSZ/YSZ composite ceramic disk was obtained,the porosity,thermal expansion coefficient,electrical properties and microstructures of the specimen was tested.The results showed that the porosity of Ni-YSZ/YSZ composite ceramic disk reaches about 30% when use starch as pore-making agent,expansion coefficient is proportional to porosity,both of them reduced with the temperature increased.The YSZ is continued and compact with network structure,Ni particulates are well distributed in it,suitable for intermediate temperature solid oxide fuel cell anode materials.Image analysis of SEM micrograph showed that the structure is loose,porous,uniform and compact in Ni/YSZ/YSZ multi-layer composite ceramics,which meet the requirement of intermediate temperature SOFC.

关键词： Ni-YSZ/YSZ Gel-tape casting Electrical property Microstructures

作者: Zhongzhou Yi Fengrui Zhai Hong Tian Zhipeng Xie

作者单位: College of Science,Honghe University,Yunnan 661100,P.R.China Department of chemistry,Wenshan University,Yunnan 343000,P.R.China Department of Materials Science and Engineering,Tsinghua University,Beijing 100084,P.R.China

会议类型: 国际会议

会议名称: The Seventh China International Conference on High-Performance Ceramics (第七届先进陶瓷国际研讨会(CICC-7))

会议地点: 厦门

会议语种:英文

页码: 1555-1558

在线出版日期: 2011-11-04（万方平台首次上网日期，不代表论文的发表时间）