| 分散剂用量对几种纳米氧化锆粉体尺寸表征的影响 |
| |
| 引用本文： | 孙静,高濂,郭景坤.分散剂用量对几种纳米氧化锆粉体尺寸表征的影响[J].无机材料学报,1999,14(3):465-469. |
| |
| 作者姓名： | 孙静 高濂 郭景坤 |
| |
| 作者单位： | 中国科学院上海硅酸盐研究所高性能陶瓷与超微结构国家重点实验室; 上海 200050 |
| |
| 摘 要： | 本文研究了三种不同来源的纳米氧化锆粉体在尺寸表征中的影响因素．其中，加入的分散剂用量不同，测得的粉体颗粒尺寸有很大差别，不足或过量的分散剂影响粉体的颗粒尺寸分布．这种影响是通过改变粉体表面的电荷分布来实现的．超声时间长短是影响粉体尺寸表征的另一个重要因素．
|
| 关 键 词： | 纳米氧化锆粉体 颗粒尺寸 Zeta电势 |
| 收稿时间： | 1998-7-17 |
| 修稿时间： | 1998-8-21 |
Effect of Dispersant on the Measurement of Particle Size Distribution of Nano Size Y-TZP |
| |
| SUN Jing,GAO Lian,GUO Jing-Kun.Effect of Dispersant on the Measurement of Particle Size Distribution of Nano Size Y-TZP[J].Journal of Inorganic Materials,1999,14(3):465-469. |
| |
| Authors: | SUN Jing GAO Lian GUO Jing-Kun |
| |
| Affiliation: | State Key Lab of High Performance Cedamics Superfine Microstructure; Shanghai Institute of Ceramics; Chinese Academy of Sciences Shanghai 200050 China |
| |
| Abstract: | Two factors which influence the measurement of particle size distribution were discussed. Selecting proper ultrasonic time can decrease the agglomeration of powders and lower the average particle size. Three kinds of nano-size Y-TZP powders require different amounts of dispersant to achieve lowest particle size. The optimum amount of dispersant for TZPI, TZP2 and TZP3 is 1.186%, 1.186% and 0.237% respectively. No significant improvement in the degree of dispersion was observed when the amount of dispersant exceeded the optimum value. The adsorbed polyelectrolyte results in a significant zeta potential on the particles and sterically prevents the particles from flocculating, leading to colloid stability increased. The PH of suspension is near to weaklybasic (pH=8.0) if NH4PAA is added even as little as 0.237%. |
| |
| Keywords: | nano zirconia powder particle size distribution Zeta potential |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《无机材料学报》浏览原始摘要信息 |
|
点击此处可从《无机材料学报》下载全文 |
