研究论文

SiC/纳米TiN水基复合料浆特性及喷雾干燥

  • 郭兴忠 ,
  • 李海淼 ,
  • 朱潇怡 ,
  • 杨 辉 ,
  • 傅培鑫 ,
  • 高黎华
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  • 1. 浙江大学材料科学与工程系, 杭州 310027; 2. 浙江东新密封有限公司, 乐清 325604

收稿日期: 2007-12-10

  修回日期: 2008-02-22

  网络出版日期: 2008-11-20

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

摘要

以四甲基氢氧化铵(TMAH)为分散剂, 纳米TiN、亚微米SiC粉体为原料, 分别制备单组分水基料浆及复合料浆, 分析了SiC/纳米TiN复合料浆的分散稳定机制以及喷雾干燥行为. 研究结果表明, TMAH在纳米TiN、SiC颗粒表面形成特征吸附, 通过静电作用和空间位阻协同作用提高颗粒的分散性; 当pH=8、TMAH加入量为0.75wt%时, 复合浆料分散稳定, 喷雾干燥制备的SiC/纳米TiN复合粉体流动性好, 且分布均匀.

本文引用格式

郭兴忠 , 李海淼 , 朱潇怡 , 杨 辉 , 傅培鑫 , 高黎华 . SiC/纳米TiN水基复合料浆特性及喷雾干燥[J]. 无机材料学报, 2008 , 23(6) : 1211 -1215 . DOI: 10.3724/SP.J.1077.2008.01211

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.

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