Das, Sumana and Mukhopadhyay, Anoop Kumar and Datta, Someswar and Dandapat, N and Basu, Debabrata (2010) Effect of dopants on the phase formation in microwave processed Al-Al(2)O(3) composites. Journal of Alloys and Compounds, 500 (2). pp. 231-236. ISSN 0925-8388

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Abstract

Microwave processing of undoped and doped Al powder compacts was performed for the preparation of Al-Al(2)O(3) composites. Mg, Mg-Si and Al(2)O(3) were used as dopants to study their effects on the oxidation of Al powder and resultant Al-Al(2)O(3) composites. The microwave heated undoped and doped Al powder compacts were characterized by X-ray diffraction analysis (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) analysis. XRD and EDX data of the microwave treated powder compacts confirmed the formation of Al-Al(2)O(3) composites. Mg and Mg-Si doped Al powder compacts exhibited bulk composite growth. On the contrary, composite formation was restricted to the surface and near surface only in the undoped and Al(2)O(3) doped Al powder compacts. SEM showed the microstructures of the microwave processed undoped and doped Al powder compacts. (C) 2010 Elsevier B.V. All rights reserved.

Item Type:	Article
Uncontrolled Keywords:	Al-Al(2)O(3) composite; Microwave; Dopant; Oxidation mechanism; Microstructure
Subjects:	Ceramic-Metal Systems
Divisions:	Bioceramics & Coating
Depositing User:	Bidhan Chaudhuri
Date Deposited:	09 Feb 2012 11:31
Last Modified:	30 Mar 2012 06:17
URI:	http://cgcri.csircentral.net/id/eprint/720

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