| 表面改性对氮化硅浆料固含量的影响 |
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| 引用本文： | 刘学建,黄莉萍,古宏晨,张兆泉,符锡仁.表面改性对氮化硅浆料固含量的影响[J].无机材料学报,2000,15(1):150-154. |
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| 作者姓名： | 刘学建 黄莉萍 古宏晨 张兆泉 符锡仁 |
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| 作者单位： | 1. 中国科学院上海硅酸盐研究所, 上海 200050; 2. 华东理工大学技术化学物理研究所, 上海 200237 |
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| 摘 要： | 本文通过酸洗工艺对Ｓｉ３Ｎ４粉体进行了表面改性，并研究了表面改性对粉体胶体特性及其浆料流动性的影响．结果表明：酸洗处理之后悬浮粒子的等电点升高，ＸＰＳ表面分析表明这是粉体表面氧化程度降低的缘故．而且，由于酸洗处理有效地提高了粒子的Ｚｅｔａ电位，因而浆料的流动性明显得到改善，其最高固含量也由５０ｖｏｌ．％提高到５５ｖｏｌ．％，并制备出了固含量为５３ｖｏｌ．％的、适于浇注的Ｓｉ３Ｎ４浆料．
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| 关 键 词： | 氮化硅 酸洗 表面改性 浆料 固含量 |
| 收稿时间： | 1999-1-8 |
| 修稿时间： | : |
Effects of Surface Modification on Solid Loading of Silicon Nitride Slurries |
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| LIU Xue-Jian,HUANG Li-Ping,GU Hong-Chen,ZHANG Zhao-Quan,FU Xi-Ren.Effects of Surface Modification on Solid Loading of Silicon Nitride Slurries[J].Journal of Inorganic Materials,2000,15(1):150-154. |
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| Authors: | LIU Xue-Jian HUANG Li-Ping GU Hong-Chen ZHANG Zhao-Quan FU Xi-Ren |
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| Affiliation: | 1.Shanghai Institute of Ceramic; CAS; Shanghai; 200050 China; 2.East China University of Science &Technology Shanghai; 200237 China |
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| Abstract: | Surface modification of Si_3N_4 particles by acid leaching and its effects on the colloidalbehavior and the flow properties of Si_3N_4 aqueous slurries were investigated. The experimentalresults indicate that the isoelectric point of St_3N_4 particles shifts to basic region after modificationdue to the decreasing of the oxidizing degree on the surface of Si_3N_4 modified. Because theZeta potential of Si_3N_4 particles increases efficiently, the flow properties of St_3N_4 modified slurrysignificantly improve and the maximum solid loading increases from 50 to 55vol.%. Moreover, the53vol.% Si_3N_4 slurry suitable for casting was prepared. |
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| Keywords: | silicon nitride acid leaching surface modification slurry solid loading |
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