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Instability of Si3N4/, SiC/, and MoSi2/ethanol suspensions

Published online by Cambridge University Press:  31 January 2011

Yoko Fukada  and
Patrick S. Nicholson
Yoko Fukada
Affiliation:
McMaster University, 1280 Main Street West, Hamilton, Ontario, L8S4L7, Canada
Patrick S. Nicholson
Affiliation:
McMaster University, 1280 Main Street West, Hamilton, Ontario, L8S4L7, Canada
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Abstract

Time-dependent suspension behavior is reported for nonoxide ceramic powders (Si3N4, SiC, and MoSi2) in ethanol. The suspension pH (and therefore the stability) changed with time. X-ray photoelectron spectroscopy, inert gas fusion, inductively coupled plasma, and high-resolution transmission electron microscopy were used to track changes of surface chemistry. The adsorption of the base, tetramethyl ammonium hydroxide (TMAH), is examined. The pH drop on powder addition to pure EtOH was used to gain insight into the role of TMAH coverage of the powder surfaces.

Type
Articles
Information
Journal of Materials Research , Volume 18 , Issue 1 , January 2003 , pp. 45 - 52
Copyright
Copyright © Materials Research Society 2003

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References

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