Synthesis of NaNbO3 Nanopowder by Sol-Gel and Its Densification by Spark Plasma Sintering - 文章详情页

作者：

Zhang, Yunxi (Zhang, Yunxi.) | Hou, Yudong (Hou, Yudong.) (学者：侯育冬) | Zheng, Mupeng (Zheng, Mupeng.) | Zhang, Xiaochun (Zhang, Xiaochun.) | Zhu, Mankang (Zhu, Mankang.)

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EI PKU CSCD

摘要：

The　sol-gel　method　in　combination　with　spark　plasma　sintering　(SPS)　has　been　applied　to　prepare　NaNbO3　fine-grained　ceramics.　The　results　reveal　that　perovskite　type　NaNbO3　nano-powders　with　mean　size　of　40　nm　can　be　synthesized　by　an　aqueous　sol-gel　route.　Subsequently,　using　the　resulted　NaNbO3　nano-powders　as　precursors,　dense　ceramics　with　mean　grain　size　of　1~2　μm　are　obtained　by　SPS　method.　The　electrical　measurement　confirms　that　the　defect　dipoles　play　the　roles　in　assisting　antiferroelectric　to　ferroelectric　(AFE-FE)　phase　transition.　Moreover,　the　dielectric　constant　exhibits　good　frequency　stability　and　the　loss　tangent　is　as　low　as　0.018　(1　kHz).　©　2018,　Science　Press.　All　right　reserved.

关键词：

Ferroelectricity Niobium compounds Perovskite Powders Sodium compounds Sol-gel process Sol-gels Spark plasma sintering

作者机构：

[ 1 ] [Zhang, Yunxi]College of Materials Science and Engineering, Beijing University of Technology, Beijing; 100124, China
[ 2 ] [Hou, Yudong]College of Materials Science and Engineering, Beijing University of Technology, Beijing; 100124, China
[ 3 ] [Zheng, Mupeng]College of Materials Science and Engineering, Beijing University of Technology, Beijing; 100124, China
[ 4 ] [Zhang, Xiaochun]College of Materials Science and Engineering, Beijing University of Technology, Beijing; 100124, China
[ 5 ] [Zhu, Mankang]College of Materials Science and Engineering, Beijing University of Technology, Beijing; 100124, China

通讯作者信息：

侯育冬
[hou, yudong]college of materials science and engineering, beijing university of technology, beijing; 100124, china

电子邮件地址：

ydhou@bjut.edu.cn

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