Structural and microstructural behaviour of SnO2 dense ceramics doped with ZnO and WO3 |
| |
| Affiliation: | 1. Laboratório Interdisciplinar de Estudos em Cerâmica (LIEC)—Instituto de Química, UNESP, C.P. 355, 14800-900 Araraquara-SP, Brazil;2. Escola de Engenharia da Universidade Presbiteriana Mackenzie, 01302–907, São Paulo-SP, Brazil;1. School of Pharmacy, Anhui University of Traditional Chinese Medicine, Hefei 230012, PR China;2. Nanomaterials and Environment Detection Laboratory, Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei 230031, PR China;3. Department of Mechanical and Automotive Engineering, Anhui Polytechnic University, Wuhu 241000, PR China;4. Department of Materials Science and Engineering, University of California, Los Angeles, CA 90095, USA;1. L3M, Department of Physics, Faculty of Sciences of Bizerte, University of Carthage, 7021 Zarzouna, Tunisia;2. Department of Physics, College of Sciences-Girls, University of Dammam, Saudi Arabia;1. Institute for Nanoscience and Nanotechnology, Sharif University of Technology, Tehran, Iran;2. Department of Materials Science and Engineering, Sharif University of Technology, Tehran, Iran;3. Department of Mechanical Engineering, Sharif University of Technology, Tehran, Iran |
| |
| Abstract: | SnO2-based varistors doped with ZnO and WO3 were prepared by mixed oxide method. Experimental evidence shows that the increase in ZnO amount increases the volume and microstrain of unit cell while the WO3 promotes a decrease. The effect of ZnO and WO3 additives could be explained by the substitution of Sn4 + by Zn2 + and W6 + . The addition of WO3 inhibits the grain growth due to the segregation in the grain boundary without influence in the densification of the samples. Besides that, an increase in the electrical resistance of the SnO2–ZnO–WO3 system was observed independent of the WO3 concentration. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
