Synthesis and Characterization of CeO₂ Doped ZrO₂ Ceramics by a Simple Sol-Gel Route

Abstract:

It is well known that sol-gel technique is a simple method to produce nano sized ceramic powders. In this study, cerium oxide doped zirconia samples, with 10 mol%-12mol% and14mol% CeO₂, were synthesized by sol-gel technique and characterized. The surface morphology, elemental composition, microstructure, and phase analysis, of the sintered CeO₂ doped ZrO₂ ceramics were characterized by field emission scanning electron microscopy (FE-SEM), energy dispersive X-ray (EDS) analysis, and X-ray diffraction (XRD) respectively. X-ray diffraction for samples sintered at 1550 °C for 4h revealed that the zirconia ceramics have a tetragonal phase structure. The addition of CeO₂ can raise the content of the tetragonal phase, but the minor monoclinic phase exists even at the CeO₂ content of 10 mol%. The effect of dopant concentration on the lattice parameter, average primary crystallite size and micro-strain was studied. Relative densities for CeO₂ doped ZrO₂ bulk ceramics varied between 95% and 99 %, depending on the CeO₂ addition.

• Periodical: Materials Science Forum (Volume 907)
• Pages: 56-60
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.907.56
• Online since: September 2017
• Authors: Ummuhanı Hilal Özer, K. Emre Öksüz*, Ali Özer
• Keywords: CeO₂, Characterization, Sol-Gel Preparation, Zro₂

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