Preparation of mullite whiskers from kaolinite using CuSO4 as fluxing agent
authors Agathopoulos, S; Fernandes, HR; Tulyaganov, D; Ferreira, JMF
editors Martins, R; Fortunato, E; Ferreira, I; Dias, C
nationality International
journal ADVANCED MATERIALS FORUM II
author keywords mullite; kaolin; whiskers; firing; formation mechanism
keywords ALUMINUM HYDROXIDE; COMPOSITES; GROWTH; GEL
abstract Mullite whiskers were produced by firing of kaolin at 1400degrees-1550degreesC. CuSO4 was used as fluxing agent. Before firing, spray drying and baking with flour and leaven were employed to give free space to the powders. The influence of preparation parameters and firing temperature on the crystalline structure and phase transformations during the entire process was determined. The results showed that there was a beneficial effect of both the incorporation of CuSO4 and the given free space on the formation of mullite whiskers. There was no evidence for the effect of firing temperature on the aspect ratio and morphology of the whiskers within the investigated range.
publisher TRANS TECH PUBLICATIONS LTD
issn 0255-5476
isbn 0-87849-941-5
year published 2004
volume 455-456
beginning page 818
ending page 821
web of science category Materials Science, Multidisciplinary
subject category Materials Science
unique article identifier WOS:000222018500176

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