| Al2O3和Y2O3包覆的SiC复合粒子制备 |
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| 引用本文： | 张巨先,高陇桥,李发,杨静漪,侯耀永.Al2O3和Y2O3包覆的SiC复合粒子制备[J].无机材料学报,1999,14(3):380-384. |
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| 作者姓名： | 张巨先 高陇桥 李发 杨静漪 侯耀永 |
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| 作者单位： | [1]北京真空技术研究所 [2]青岛化工学院 |
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| 摘 要： | 本文利用非均匀成核法，将Ａｌ（ＯＨ）３和Ｙ（ＯＨ）３均匀地包覆在ＳｉＣ粒子表面，制备出被覆Ａｌ２Ｏ３和Ｙ２Ｏ的ＳｉＣ复合粒子，包覆Ａｌ（ＯＨ）３的ＳｉＣ粒子，其等电点ＩＥＰ的ｐＨ＝３．４移至ｐＨ＝７．３，再用Ｙ（ＯＨ）３包覆表面被覆Ａｌ（ＯＨ）３的ＳｉＣ复合粒子后，其等电点ＩＥＰ又从ｐＨ＝７．３移至ｐＨ＝８．６ｄａｄｋ。
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| 关 键 词： | 包覆 复合粒子 碳化硅 氧化铝 氧化钇 陶瓷 |
| 收稿时间： | 1998-8-10 |
| 修稿时间： | 1998-11-9 |
Preparation of Al2O3 and Y2O3-coated SiC Composite Particles |
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| ZHANG Ju-Xian,YANG Jing-Yi,GAO Long-Qiao,HOU Yao-Yong,LI Fa.Preparation of Al2O3 and Y2O3-coated SiC Composite Particles[J].Journal of Inorganic Materials,1999,14(3):380-384. |
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| Authors: | ZHANG Ju-Xian YANG Jing-Yi GAO Long-Qiao HOU Yao-Yong LI Fa |
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| Affiliation: | BeijingVacuumElectronicsResearchInstituteBeijing100016China;QingdaoInstituteofChemicalTechnologyQingdao266042China |
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| Abstract: | Al2O3and Y2O3-coated SiC composite particles were prepared from SiC coated uniformly with Al(OH)3 and Y(OH)3 by heterogeneous nucleation process. The IEP of as-received SiC is pH 3.4, that of Al(OH)3-coated SiC shift to pH 7.3. When Al(OH)3-coated SiC composite particles were coated with Y(OH)3, its IEP is about pH 8.6. In addition, the viscosity behavior of SiC was changed via coating. The coating ratio is over 95% according to the results of hydrochloric acid titration, that is, 95% of added coating materials can be coated on the surfaces of SiC particles by heterogeneous nucleation process. |
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| Keywords: | coating heterogeneous nucleation precess SiC composite particles coating ratio |
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