| Growth and microstructure of AlN whiskers and dendrites |
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| 引用本文： | YingDai CewenNan 等. Growth and microstructure of AlN whiskers and dendrites[J]. 北京科技大学学报(英文版), 2002, 9(2): 118-120 |
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| 作者姓名： | YingDai CewenNan 等 |
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| 作者单位： | [1]DepartmentofMaterialsPhysics,UniversityofScienceandTechnologyBeijing,Beijing100083,China [2]DeparmentofMaterials,TsinghuaUniversity,Beijing100084,China |
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| 基金项目： | 国家自然科学基金，the Cross-Century Talents Projects of Educational Ministry of China，中国博士后科学基金，the Anthony Mason Fellowship at the University of New South Wales |
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| 摘 要： | AlN whiskers or dendrites were synthesized with a sublimation-recrytallization method by using Al,AlN powders and some additives as raw materials.Whiskers with different sizes that featured high purity and good crystallinity were obtained by controlling temperature and gas supersaturation in the reaction container,The whiskers were described as long and straight single crystals of approximately 1-30 um in diameter by the centimeter range in length.However,AlN dendrites were about 1mm in diameter by 0.5cm in length,and showed an obviously preferential growth orientation.i.e.,perpendicular to [211] and [1011] planes.It is concluded that the whiskers or dendrites grow via the vapor-solid mechanism.
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| 关 键 词： | 氮化铝 晶须 枝晶 微结构 |
Growth and microstructure of AlN whiskers and dendrites |
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| Ying Dai,Yue Zhang,Cewen Nan,Mark Hoffman,Mengkui Huang,Jie LI. Growth and microstructure of AlN whiskers and dendrites[J]. Journal of University of Science and Technology Beijing, 2002, 9(2): 118-120 |
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| Authors: | Ying Dai Yue Zhang Cewen Nan Mark Hoffman Mengkui Huang Jie LI |
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| Abstract: | AlN whiskers or dendrites were synthesized with a sublimation-recrystallization method by using Al, AlN powders and some additives as raw materials. Whiskers with different sizes that featured high purity and good crystallinity were obtained by controlling temperature and gas supersaturation in the reaction container. The whiskers were described as long and straight single crystals of approximately 1-30 (m in diameter by the centimeter range in length. However, AlN dendrites were about 1 mm in diameter by 0.5 cm in length, and showed an obviously preferential growth orientation, i.e., perpendicular to and planes. It is concluded that the whiskers or dendrites grow via the vapor-solid mechanism. |
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| Keywords: | aluminum nitride whiskers dendrites sublimation-recrystallization method |
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