Sol-gel synthesis and characterisation of alumina-strontium hexaluminate composites

被引:0
作者
Vishista, K. [1 ]
Gnanam, F. D.
Awaji, H.
机构
[1] Anna Univ, AC Tech, Dept Ceram Technol, Madras 600025, Tamil Nadu, India
[2] Nagoya Inst Technol, Dept Environm & Mat Engn, Showa Ku, Nagoya, Aichi, Japan
来源
JOURNAL OF ADVANCED MATERIALS | 2006年
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中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Boehmite sol was prepared by hot water hydrolysis of aluminium iso-propoxide using nitric acid as the catalyst. Strontium nitrate to yield 0 to 20 vol% calcia was added to the boehmite sol. The boehmite with additives was calcined at 500 degrees C for 3 h. The calcined powder was milled at 230 rpm for 6h and particle size was measured using laser particle size analyser. The powder samples were calcined at 1600 degrees C for 3 hand the formation of strontium hexa-aluminate was determined using phase diagram, transmission electron microscope, energy dispersive spectra and X-ray diffraction spectra. The powder samples were sintered at 1600 degrees C for 6 h and the formation of hexaluminate (plate-like) grains was confirmed using scanning electron microscopy and optical microscopy.
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页码:30 / 35
页数:6
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