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Formation of Rod-Like Al2TiO5 Via Mechanical Activation Followed by Thermal Processing

Journal Materials Science Forum (Volumes 534 - 536)
Volume Progress in Powder Metallurgy
Edited by Duk Yong Yoon, Suk-Joong L. Kang, Kwang Yong Eun and Yong-Seog Kim
Pages 53-56
DOI 10.4028/www.scientific.net/MSF.534-536.53
Citation Xiao Hu Chen et al., 2007, Materials Science Forum, 534-536, 53
Online since January, 2007
Authors Xiao Hu Chen, Xiao Min Chen, Huang Zhao, Ji Huai Wu
Keywords Aluminium Titanate, Mechanical Activation (MA), Rod-Like Crystals, X-Ray Diffraction (XRD)
Abstract

The purpose of this paper is to investigate the possibility of rod-like Al2TiO5 formation via a mechanical activation process. A QM-ISP-4 Planetary Mill was employed to activate mechanically the mixtures of anatase and corundum in air at room temperature for different times. The milled powder mixtures were then sintered in air at 1300℃ for 1 h. The XRD results showed that the milled powder mixtures were completely transformed into Al2TiO5 after sintering, except the mixtures milled for 5 and 10 hours. The SEM observations showed the typical morphology of rod-like Al2TiO5 vary in the range: widths from 0.6 to 1.2 μm, and lengths from 3.0 to 6.0 μm. The rod-like Al2TiO5 formation was attributed to the positive effects caused by the mechanical activation.

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