| Al2O3和Y2O3包覆的 SiC复合粒子制备 |
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| 作者单位： | ：张巨先 |
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| 摘 要： | 本文利用非均匀成核法, 将Al(OH)
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| 关 键 词： | 包覆 非均匀成核法 SiC复合粒子 包覆率 |
Preparation of Al2O3and Y2O3-coated SiC Composite Particles |
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| Abstract: | Al2O3and Y2O3-coatedSiC composite particles were prepared from SiC coated uniformly with Al(OH)3and Y(OH)3 by heterogeneous nucleation process. The IEP of as-received SiC ispH 3.4, that of Al(OH)3-coated SiC shift to pH 7.3. When Al(OH)3-coatedSiC composite particles were coated with Y(OH)3, its IEP is about pH 8.6. Inaddition, the viscosity behavior of SiC was changed via coating. The coating ratio is over95% according to the results of hydrochloric acid titration, that is, 95% of added coatingmaterials can be coated on the surfaces of SiC particles by heterogeneous nucleationprocess. |
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