Effect of rare earth dopants on structural and mechanical properties of nanoceria synthesized by combustion method

A. Akbari-Fakhrabadi, V. Meruane, M. Jamshidijam, M. A. Gracia-Pinilla, R. V. Mangalaraja

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

Structural characteristics of combustion synthesized, calcined and densified pure and doped nanoceria with tri-valent cations of Er, Y, Gd, Sm and Nd were analyzed by X-ray diffraction (XRD) and high resolution transmission electron microscopy (HRTEM). The results showed that the as-synthesized and calcined nanopowders were mesoporous and calculated lattice parameters were close to theoretical ion-packing model. The effect of dopants on elastic modulus, microhardness and fracture toughness of sintered pure and doped ceria were investigated. It was observed that tri-valent cation dopants increased the hardness of the ceria, whereas the fracture toughness and elastic modulus were decreased.

Original languageEnglish
Pages (from-to)168-173
Number of pages6
JournalMaterials Science and Engineering A
Volume649
DOIs
StatePublished - 1 Jan 2016
Externally publishedYes

Keywords

  • Combustion synthesis
  • Doped ceria
  • Mechanical properties
  • Mesoporous

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