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Title: In situ surface modification of silicon carbide particles using Al3+ complexes and polyelectrolytes in aqueous suspensions
Authors: Zhang, Yongheng
Binner, J.G.P.
Issue Date: 2002
Publisher: © Blackwell
Citation: 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. 529-534
Abstract: Silicon 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.
Description: 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.
URI: https://dspace.lboro.ac.uk/2134/2604
Appears in Collections:Closed Access (Materials)

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