Open AccessPreparation of Stable ZrB2-SiC-B4C Aqueous Suspension for Composite Based Coating: Effect of Solid Content and Dispersant on Stability
Author(s) -
M. Mousavi Mashadi .,
Mohsen Mohammadijoo,
Alireza Honarkar,
Zeinab Naderi Khorshidi
Publication year - 2014
Publication title -
journal of ceramics
Language(s) - English
Resource type - Journals
eISSN - 2090-8628
pISSN - 2090-8644
DOI - 10.1155/2014/370851
Subject(s) - dispersant , materials science , suspension (topology) , composite number , zeta potential , aqueous solution , rheology , composite material , coating , compaction , chemical engineering , dispersion (optics) , nanoparticle , nanotechnology , chemistry , organic chemistry , physics , mathematics , engineering , homotopy , pure mathematics , optics
ZrB2-SiC-B4C aqueous suspension has been prepared using poly(ethyleneimine) as a dispersant. Since increasing the solid content of suspension leads to high compaction and consequently low porosities through final coat, the effect of solid content has been studied. The dispersant and solid content were changed in the range of 0.3–1.5 wt.% and 45–55 vol.%, respectively, to assess the optimal conditions effect on stability and characteristics of suspension. Results of zeta potential measurements and rheological analysis at pH 7.8 showed that the composite suspension including 45 vol.% solid content and 1.5 wt.% dispersant was in stable state