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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 12    No. 1    February 2002

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Microstructures of nanosized alumina powders
 synthesized by sol-gel method
WANG Jing(王  晶),ZHANG Bo(张  波)

Department of Metallurgy Physical Chemistry, 
Northeasten Unive rsity, Shenyang 110006, China

Abstract:The microstructures of nanosized alumina powders prepared by sol-gel routine were systematically studied with transmission electron microscopy and X-ray diffractometer. It was found that the morphologies of alumina gel powders change in t he orders of caterpillar-thorn-granular-dumbbell shaped structures during calcining at temperatures from 20℃ to 800℃, 1200℃ and 1300℃. The caterpillar shaped structure composed of strings with a diameter of 5nm.

 

Key words: nanosized;alumina powders;sol-gel;microstructure

ISSN 1672-7029
CN 43-1423/U

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