Effect of ZrO2 additions on sintering of SnO2-based ceramics |
| |
| Affiliation: | 1. Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, Via L. Mangiagalli 25, 20133 Milano, Italy;2. Institut Laue-Langevin, 71 Ave. des Martyrs, CS20156, 38042 Grenoble Cedex 9, France;3. Molecular Imaging Center, Università degli Studi di Torino, Via Nizza 62, 10125 Torino, Italy;1. Department of Physics, Cochin University of Science and Technology, Cochin 682022, India;2. Materials Science and Technology Division, National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695019, India;1. Radioimmune & Inorganic Chemistry Section, ROB, NCI, NIH, 10 Center Drive, Building 10, Rm B3B69, Bethesda, MD 20892-1002, USA;2. Laboratory of Diagnostic Radiology Research (CC), NIH, Bethesda, MD, USA;3. Frank Laboratory, Radiology and Imaging Sciences, Clinical Center, NIH, Bethesda, MD, USA;4. National Institute of Biomedical Imaging and Bioengineering, NIH, Bethesda, MD, USA;1. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China;2. Department of Physics, Hubei Nuclear-Solid Physics Key Laboratory and Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, Wuhan University, Wuhan 430072, China;1. Laboratory of the Physico-Chemistry of Solid States, LR11 ES51, University of Sfax, Road of Soukra km 4, Sfax 3038, Tunisia;2. LUMAN Université, Université du Maine, CNRS UMR 6283, Institut des Molécules et Materiaux du Mans (IMMM), Avenue O. Messiaen, 7285 LE MANS Cedex 9, France |
| |
| Abstract: | The effect of zirconia additions on sintering of CoO doped tin dioxide has been investigated in the temperature range 1100–1250 °C. A first study showed that the substitution of tin by zirconium reduces significantly the volatilisation rate of SnO2 for temperatures greater than 1400 °C. It appeared that the zirconium content increase inhibits the densification kinetics of SnO2-based ceramics. Indeed, the relative density did not exceed 93% for a Zr content lower than 6 mol% in the Sn(1–x)ZrxO2 solid solution. This negative effect can be imputed to the elastic distortions caused by the introduction of Zr in the tin dioxide lattice. So, the diffusion rate of point defects such as oxygen or cobalt ions is lowered. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
