Research Paper

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

  • GUO Xing-Zhong ,
  • LI Hai-Miao ,
  • ZHU Xiao-Yi ,
  • YANG Hui ,
  • FU Pei-Xin ,
  • GAO Li-Hua
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  • 1. Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China; 2. Zhejiang Dongxin Seals Limited Company, Yueqing 325604, China

Received date: 2007-12-10

  Revised date: 2008-02-22

  Online published: 2008-11-20

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.

Cite this article

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, 2008 , 23(6) : 1211 -1215 . DOI: 10.3724/SP.J.1077.2008.01211

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