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.
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
[1] Nihara K. J. Ceram. Soc. Jpn., 1991, 99 (10): 947-982.
[2] Ohji T, Jeong Y K, Choa Y H, et al. J. Am. Ceram. Soc., 1998, 18 (6): 1453-1460.
[3] Stems L C, Zhao J H, Harmer M P. J. Eur. Ceram. Soc., 1992, 10: 473-477.
[3] 高 濂, 靳喜海, 郑 珊. 纳米复相陶瓷. 北京: 化学工业出版社, 2004. 18-23.
[4] 高 濂, 孙 静, 刘阳桥. 纳米粉体的分散及表面改性. 北京: 化学工业出版社, 2003. 144-204.
[5] 郭兴忠, 杨 辉, 王建武. 稀有金属材料与工程, 2004, 33 (Suppl. 3): 53-57.
[6] Guo X. Z, Yang H. J. Zhejiang Univ. Sci., 2005, 6 (3): 213-218.
[7] 郭兴忠, 杨 辉, 王建武, 等. 中国有色金属学报, 2005, 15 (4): 524-530.
[8] Li W, Chen P, Gu M Y, et al J. Eur. Ceram. Soc., 2004, 24: 3679-3684.
[9] Mei S, Yang J, Ferreira M F. Colloid. Inter. Sci., 2001, 241: 417-421.
[10] 易中周, 黄 勇, 谢志鹏, 等. 硅酸盐学报, 2002, 30 (4): 517-520.