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

被引：12

作者：

Akbari-Fakhrabadi, A. ^{[1
]}

Meruane, V. ^{[1
]}

Jamshidijam, M. ^{[2
,3
]}

Gracia-Pinilla, M. A. ^{[4
,5
]}

Mangalaraja, R. V. ^{[2
]}

机构：

[1] Univ Chile, Dept Mech Engn, Adv Mat Lab, Santiago, Chile

[2] Univ Concepcion, Dept Mat Engn, Adv Ceram & Nanotechnol Lab, Concepcion, Chile

[3] Islamic Azad Univ, Sirjan Branch, Dept Mat Engn, Sirjan, Iran

[4] Univ Autonoma Nuevo Leon, Fac Ciencias Fismatemat, San Nicolas De Los Garza, NL, Mexico

[5] Univ Autonoma Nuevo Leon, Ctr Invest & Innovac Desarrollo Ingn & Tecnol, Apodaca, NL, Mexico

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2016年 / 649卷

关键词：

Combustion synthesis; Doped ceria; Mesoporous; Mechanical properties; DOPED CERIA; ELASTIC PROPERTIES; FRACTURE-TOUGHNESS; ELECTROLYTES; INDENTATION; MODULUS; OXIDES;

D O I：

10.1016/j.msea.2015.09.125

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

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. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：168 / 173

页数：6

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