Effect of dopants on the phase formation in microwave processed Al-Al2O3 composites

被引：5

作者：

Das, S. ^{[1
]}

Mukhopadhyay, A. K. ^{[1
]}

Datta, S. ^{[1
]}

Dandapat, N. ^{[1
]}

Basu, D. ^{[1
]}

机构：

[1] Cent Glass & Ceram Res Inst, Kolkata 700032, India

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2010年 / 500卷 / 02期

关键词：

Al-Al2O3; composite; Microwave; Dopant; Oxidation mechanism; Microstructure; ALLOY COMPOSITES; GROWTH; MICROSTRUCTURE; OXIDATION; POWDER;

D O I：

10.1016/j.jallcom.2010.04.016

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Microwave processing of undoped and doped Al powder compacts was performed for the preparation of Al-Al2O3 composites. Mg, Mg-Si and Al2O3 were used as dopants to study their effects on the oxidation of Al powder and resultant Al-Al2O3 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-Al2O3 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 Al2O3 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.

引用

页码：231 / 236

页数：6

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