TITLE

Ultrasonic dispersion of Al-AlN and AlO nanopowder agglomerates and of nanostructured AlOOH particles

AUTHOR(S)
Ivanov, A.
PUB. DATE
May 2012
SOURCE
Russian Physics Journal;May2012, Vol. 54 Issue 12, p1413
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The influence of the ultrasonic radiation of power 10-60 W and frequency 22 and 2.64⋅10 kHz on the deagglomeration of Al-AlN, AlO, and AlOOH nanopowders in ethanol has been studied by using a dynamic light scattering method. It has been shown that the number-average size of the agglomerates decreases to 0.5 μm during their ultrasound dispersion at a frequency of 22 kHz for 20 min and subsequently it does vary on varying insonation duration and ultrasonic power. Two-stage ultrasonic treatment of the agglomerates at frequencies of 22 and 2.64⋅10 kHz increases the fraction of 0.2-0.5 μm particles. It has been found that efficient deagglomeration of nanopowders can be attained by sequentially increasing the ultrasonic radiation frequency.
ACCESSION #
75529481

 

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