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Co-dispersion behavior and interactions of nano-ZrB2 and nano-SiC in a non-aqueous solvent

Title
Co-dispersion behavior and interactions of nano-ZrB2 and nano-SiC in a non-aqueous solvent
Author
최성철
Keywords
Zirconium diboride; Silicon carbide; Co-dispersion behavior; Non-aqueous solvent; Oleic acid
Issue Date
2015-11
Publisher
ELSEVIER SCI LTD
Citation
CERAMICS INTERNATIONAL, v. 42, NO 4, Page. 4658-4662
Abstract
The co-dispersion behavior and interactions of nano-ZrB2 and nano-SiC in a non-aqueous solvent were investigated. Polyvinylidene fluoride (PVDF) and oleic acid were adopted as dispersants to study the stable co-dispersion mechanism in a non-aqueous solvent. Because N-methyl-2-pyrrolidone (NMP) has a relatively high dielectric constant among non-aqueous solvents, NMP was introduced; NMP was found to exhibit a good affinity with dispersants. ZrB2 and SiC were mixed in NMP with or without dispersants. ZrB2 and SiC in a paste without dispersants aggregated due to the poor repulsion force by a double-layer overlapping. The paste with PVDF was more homogeneous than the paste with oleic acid. The steric hindrance effect of PVDF was evaluated using SEM image analysis. FT-IR analysis results show that PVDF and oleic acid were chemically adsorbed onto the particle surface. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
URI
http://www.sciencedirect.com/science/article/pii/S027288421502115X?via%3Dihubhttp://hdl.handle.net/20.500.11754/28940
ISSN
0272-8842; 1873-3956
DOI
10.1016/j.ceramint.2015.11.039
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
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