Characteristics of SiC/nano-TiN Aqueous Mixed Slurry and Its Spray Drying Behavior

doi:10.3724/SP.J.1077.2008.01211

Abstract

Abstract: The aqueous slurries were prepared usingtetramethyl ammonium hydroxide (TMAH) as dispersant, nano-TiN and submicron SiC
powders as starting materials. The dispersion, stabilization mechanism and spray drying behaviors of SiC/nano-TiN aqueous mixed slurry were analyzed. The results show that TMAH can be absorbed on the surface of nano-TiN and SiC particles, and the dispersibility of particles is cooperatively improved by electrostatic and steric effects. The mixed slurry possesses better dispersion and stabilization when pH value is 8 and the amount of TMAH is 0.75wt%, and the SiC/nano-TiN composite powders prepared by spray drying distribute uniformly with good fluidity.

Key words: silicon carbide, nano-TiN, aqueous slurry, composite powders, TMAH, spray drying

CLC Number:

GUO Xing-Zhong,LI Hai-Miao,ZHU Xiao-Yi,YANG Hui,FU Pei-Xin,GAO Li-Hua. Characteristics of SiC/nano-TiN Aqueous Mixed Slurry and Its Spray Drying Behavior[J]. Journal of Inorganic Materials, DOI: 10.3724/SP.J.1077.2008.01211.

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Characteristics of SiC/nano-TiN Aqueous Mixed Slurry and Its Spray Drying Behavior

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