The role of Si–O species in the colloidal stability of silicon-containing ceramic powders

Autor:	Patrick S. Nicholson, Yoko Fukada
Rok vydání:	2004
Předmět:	Materials science Silicon Mineralogy chemistry.chemical_element Stability (probability) Suspension (chemistry) Colloid Electrokinetic phenomena Viscosity Chemical engineering chemistry visual_art Materials Chemistry Ceramics and Composites visual_art.visual_art_medium DLVO theory Ceramic
Zdroj:	Journal of the European Ceramic Society. 24:17-23
ISSN:	0955-2219
DOI:	10.1016/s0955-2219(03)00124-9
Popis:	The relative colloidal stability in ethanol of ceramic powders with Si–O surface groups (Si3N4, SiC and MoSi2) is reported. SiO2/EtOH suspensions are also examined as reference. The comparative relationships between pH, particle-surface charge, zeta-potential, stability and suspension rheology are discussed. The nature and influence of the surface species is determined and the similarity/difference therebetween, compared. DLVO theory and Stability Ratio values defined suspension stability and it was found non-oxide particles in EtOH are charged-stabilized and have viscosity and flow-curves that agree with the electrokinetic measurements.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ebc38c69de8b9100bc590a9b8bec1b23 https://doi.org/10.1016/s0955-2219(03)00124-9 Zobrazit plný text záznamu Full Text from ScienceDirect