| 片状氧化铝粉体的控制合成及表征 |
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| 引用本文： | 江元汝,李兆,贾彩霞,赵彬,刘德尧. 片状氧化铝粉体的控制合成及表征[J]. 西安建筑科技大学学报(自然科学版), 2011, 0(5): 725-729 |
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| 作者姓名： | 江元汝 李兆 贾彩霞 赵彬 刘德尧 |
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| 作者单位： | 西安建筑科技大学理学院;西安建筑科技大学材料科学与工程学院; |
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| 基金项目： | 国家自然科学基金资助项目(40903042) |
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| 摘 要： | 研究了碳酸氢铵和硝酸铝在添加剂氟化铵作用下沉淀法合成片状氧化铝粉体,讨论了片状氧化铝粉体的形成机理.通过XRD,SEM对产物进行表征.结果表明氟化铵有效控制了氧化铝颗粒的大小和形貌,改善了氧化铝的结晶.适量加入氟化铵可以获得分布均匀、分散性良好,粒径3-8 μm,厚度0.2-0.3 μm的正六边形片状氧化铝粉体.
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| 关 键 词： | 片状Al2O3 控制合成 表征 |
Controlled synthesis and characterization of flaky alumina powder |
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| JIANG Yuan-ru,LI Zhao,JIA Cai-xia,ZHAO Bin,LIU De-yao. Controlled synthesis and characterization of flaky alumina powder[J]. Journal of Xi'an University of Architecture & Technology, 2011, 0(5): 725-729 |
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| Authors: | JIANG Yuan-ru LI Zhao JIA Cai-xia ZHAO Bin LIU De-yao |
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| Affiliation: | JIANG Yuan-ru1,LI Zhao1,JIA Cai-xia1,ZHAO Bin1,LIU De-yao2 |
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| Abstract: | The thesis discusses the formation of flaky alumina powder and concludes a precipitation method of synthesizing flaky alumina powder,using aluminum nitrate and ammonium bicarbonate,with small-amount of ammonium fluoride as additive.The morphology,particle size and phase composition of aluminium oxide powder were analyzed by SEM and XRD.It is found that the size and morphology of Al2O3 particles can be effectively controlled by ammonium fluoride.The crystallization of plate-like α-Al2O3 is improved by the additives.With ammonium fluoride,hexagonal lamellate α-Al2O3 powder with perfect morphology,smooth surface,good dispersion property,and particle size of 3~8μm,thickness of about 0.2-0.3μm can be prepared. |
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| Keywords: | flaky alumina controlled synthesis characterization |
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