Title: The microstructure and mechanical property of alkaline earth-doped lanthanum gallate with Al₂O₃ addition

Authors: Ning Liu, Yupeng Yuan, Xiaobao Gao

Addresses: Department of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, China. ' Department of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, China. ' Department of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, China

Abstract: In the present paper, the microstructure and mechanical property of alkaline earth-doped lanthanum gallate with Al₂O₃ addition are studied and the effect of the starting powder size of Al₂O₃ is also discussed. The phase constitution is conducted by X-ray Diffractometry (XRD). The microstructure is observed by Scanning Electron Microscopy (SEM) and the ion electrical conductivity is measured by an impedance analyser. The results denote that the addition of 2% submicron Al₂O₃ can improve the bending strength obviously and has no influence on the ion electrical conductivity.

Keywords: lanthanum gallate; mechanical properties; bending strength; microstructure; electrical conductivity; nano aluminium oxide; nanomaterials.

DOI: 10.1504/IJMMP.2008.022613

International Journal of Microstructure and Materials Properties, 2008 Vol.3 No.6, pp.763 - 779

Published online: 19 Jan 2009 *

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