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

Akbari Fakhrabadi, Ali y Meruane, V. y Jamshidijam, M. y Gracia Pinilla, Miguel Ángel y Mangalaraja, Ramalinga Viswanathan (2015) Effect of rare earth dopants on structural and mechanical properties of nanoceria synthesized by combustion method. Materials Science and Engineering: A, 649. pp. 168-173. ISSN 09215093

Vista previa

Texto 1-s2.0-S0921509315304639-main.pdf - Versión Aceptada Available under License Creative Commons Attribution Non-commercial No Derivatives. Download (4MB) | Vista previa

Resumen

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.

Actions (login required)

Ver elemento