Synthesis of nanocrystalline magnesium aluminate (MgAl2O4) spinel powder by the urea-formaldehyde polymer gel combustion route

被引：49

作者：

Prabhakaran, K. ^{[1
]}

Patil, D. S. ^{[1
]}

Dayal, R. ^{[1
]}

Gokhale, N. M. ^{[1
]}

Sharma, S. C. ^{[1
]}

机构：

[1] Naval Mat Res Lab, Thana 421506, Maharashtra, India

来源：

MATERIALS RESEARCH BULLETIN | 2009年 / 44卷 / 03期

关键词：

Oxides; Chemical synthesis; Thermo gravimetric analysis; X-ray diffraction; Microstructure; SOL-GEL; MECHANOCHEMICAL SYNTHESIS; TRANSPARENT MGAL2O4; BEHAVIOR; TEMPERATURE; CERAMICS; FABRICATION; PRECURSORS; ALKOXIDE;

D O I：

10.1016/j.materresbull.2008.06.029

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Nanocrystalline MgAl2O4 spinel powder was synthesized by the urea-formaldehyde (UF) polymer gel combustion route. A transparent gel formed from magnesium nitrate, aluminium nitrate and UF after drying underwet self-sustained combustion when initiated with a burning splinter. The combustion product on calcinations at 850 degrees C formed MgAl2O4 spinel. Calcination of the combustion product resulted in particle coarsening. The powder obtained by planetary ball milling of the spinel had a median particle size of 1.58 mu m. The spinel particles are agglomerates of nanocrystallites of size in the range 10-30 nm. The compacts prepared by uni-axial pressing of the spinel powder sintered to >99% TD at 1600 degrees C. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：613 / 618

页数：6

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