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

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Özer U. H., Öksüz K. E., Özer A.

10th International Conference on Materıals Science Engineering (Bramat 2017), Brasov, Romanya, 8 - 11 Mart 2017, cilt.907, ss.56-60 identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası: 907
  • Doi Numarası: 10.4028/www.scientific.net/msf.907.56
  • Basıldığı Şehir: Brasov
  • Basıldığı Ülke: Romanya
  • Sayfa Sayıları: ss.56-60
  • Sivas Cumhuriyet Üniversitesi Adresli: Evet

Özet

 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.

Keywords: Sol-gel preparation, ZrO2, CeO2, Characterization.