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In situ surface modification of silicon carbide particles using Al3+ complexes and polyelectrolytes in aqueous suspensions
journal contribution
posted on 2007-01-23, 09:40 authored by Yongheng Zhang, J.G.P. BinnerSilicon carbide (SiC) particles were modified in situ, using
Al3+ complexes in aqueous media, via control of Al(NO3)3
concentration and pH. The Al3+ formed hydrolyzed complexes
that adsorbed onto the charged sites on the SiC particle
surfaces. As a result, the surface-modified SiC particles behaved
in an alumina-like manner in the approximate pH
range 5–8. The modified SiC particles were further treated
with two types of polyelectrolytes that were sequentially adsorbed
onto the particle surface, to give a maximum surface
charge. As a result of this surface-modification process, the
SiC could be dispersed with Al2O3 in aqueous media without
heteroaggregation.
History
School
- Aeronautical, Automotive, Chemical and Materials Engineering
Department
- Materials
Pages
139534 bytesCitation
ZHANG, Y. and BINNER, J.G.P., 2002. In situ surface modification of silicon carbide particles using Al3+ complexes and polyelectrolytes in aqueous suspensions. Journal of the American Ceramics Society, 85(3), pp. 529-534Publisher
© BlackwellPublication date
2002Notes
This is Restricted Access. This article was published in the journal, Journal of the American Ceramics Society [© Blackwells] and is also available at: www.blackwellpublishing.com/jace.Language
- en