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- W3160777918 abstract "SiC is a promising functional ceramic material with many great properties. High concentrated SiC slurry with excellent rheology and stability is required in some processes of ceramic forming. In this work, the dispersion of SiC powders was obviously improved by ternary modifiers: γ-(2,3-epoxypropoxy) propytrimethoxysilane (KH560), sodium humate and sodium dodecyl sulfate (SDS). Modified SiC slurry showed the lowest viscosity of 0.168 Pa s at a solid content of 50 vol%. The maximum absolute value of zeta potential of SiC increased from 47.3 to 61.6 mV by modification. Sedimentation experiments showed that a highly stable suspension of modified SiC was obtained at pH 10. SiC green body with high density of 2.643 g/cm3 was prepared with modified powders by slip casting. X-ray photoelectron spectra (XPS) and thermogravimetry (TG) measurements indicated the adsorption of modifiers on SiC surface. Therefore, modified SiC powders could stably disperse in aqueous media due to the increase of electrosteric repulsion between particles. The novel strategy used in this study could further improve the dispersion of SiC powders." @default.
- W3160777918 created "2021-05-24" @default.
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- W3160777918 date "2021-09-01" @default.
- W3160777918 modified "2023-10-01" @default.
- W3160777918 title "Surface modification of superfine SiC powders by ternary modifiers-KH560/sodium humate/SDS and its mechanism" @default.
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- W3160777918 doi "https://doi.org/10.1016/j.ceramint.2021.05.091" @default.
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