首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Impedance spectroscopy analysis of percolation in (yttria-stabilized zirconia)-yttria ceramic composites
Institution:1. Centre for THz Research, China Jiliang University, Hangzhou, 310018, China;2. College of Information Engineering, China Jiliang University, Hangzhou, 310018, China;3. Key Laboratory of Electromagnetic Wave Information Technology and Metrology of Zhejiang Province, College of Information Engineering, China Jiliang University, Hangzhou, 310018, China;1. Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research, IEK-1: Materials Synthesis and Processing, 52425 Jülich, Germany;2. Evonik Industries, Cologne, Germany;3. Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research, IEK-9: Fundamentals of Electrochemistry, 52425 Jülich, Germany;1. Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-2 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8570, Japan;2. Nanoscience and Nanotechnology Research Center, Research Organization for the 21st Century, Osaka Prefecture University, 1-2 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8570, Japan;1. College of Chemistry and Material Science, Key Laboratory of Inorganic Nano-materials of Hebei Province, Hebei Normal University, No. 20 Rd. East of 2nd Ring South, Yuhua District, Shijiazhuang City, Hebei Province 050024, PR China;2. Department State Key Laboratory of Fine Chemicals, School of Chemistry, Dalian University of Technology, No. 2 Linggong Road, Ganjingzi District, Dalian City, Liaoning Province 116024, PR China;3. Department of Physical and Analytical Chemistry, Uppsala University, Box 259, SE−751 05 Uppsala, Sweden;1. Fraunhofer Institute for Nondestructive Testing IZFP, Campus E3.1, 66123 Saarbrücken, Germany;2. Chair of Chemical Technology of Materials Synthesis, Department Chemistry and Pharmacy, Julius-Maximilians-University Würzburg, Röntgenring 11, 97070 Würzburg, Germany;3. Fraunhofer Institute for Silicate Research, ISC, Neunerplatz 2, 97082 Würzburg, Germany
Abstract:(ZrO2:8 mol% Y2O3)+m mol% Y2O3 ceramic composites with nominal yttria concentration varying from 0 to70 mol% (0–82.9 vol.%) were prepared by evaporation of a suspension of ZrO2:8 mol% Y2O3 and Y2O3 in ethanol followed by pressing and sintering. The samples were analyzed by X-ray diffractometry and scanning electron microscopy for microstructural characterization. The electrical properties were studied by impedance spectroscopy (IS) allowing for the separation of the inter- and intragranular components of the electrical conductivity. The percolative behavior of these components was analyzed using the general effective media (GEM) equation and the percolation thresholds found were ∼28 vol.%. The results indicate that impedance spectroscopy provides useful information in addition to the dc techniques concerning the electrical characterization of composite materials.
Keywords:
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号