Growth and microstructure of AlN whiskers and dendrites

Ying Dai; Yue Zhang; Cewen Nan; Mark Hoffman; Mengkui Huang; Jie Li

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Volume 9 Issue 2

Apr. 2002

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Abstract

International Journal of Minerals, Metallurgy and Materials > 2002 > 9(2): 118-120.

Ying Dai, Yue Zhang, Cewen Nan, Mark Hoffman, Mengkui Huang, and Jie Li, Growth and microstructure of AlN whiskers and dendrites, J. Univ. Sci. Technol. Beijing , 9(2002), No. 2, pp.118-120.

Cite this article as:

Ying Dai, Yue Zhang, Cewen Nan, Mark Hoffman, Mengkui Huang, and Jie Li, Growth and microstructure of AlN whiskers and dendrites, J. Univ. Sci. Technol. Beijing , 9(2002), No. 2, pp.118-120.

Cite this article as:

Ying Dai, Yue Zhang, Cewen Nan, Mark Hoffman, Mengkui Huang, and Jie Li, Growth and microstructure of AlN whiskers and dendrites, J. Univ. Sci. Technol. Beijing , 9(2002), No. 2, pp.118-120.

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Materials

Growth and microstructure of AlN whiskers and dendrites

Ying Dai^1), ,,
Yue Zhang¹⁾,
Cewen Nan²⁾,
Mark Hoffman³⁾,
Mengkui Huang¹⁾ and
Jie Li¹⁾

Author Affilications

Department of Materials Physics, University of Science and Technology Beijing, Beijing 100083, China
Department of Materials, Tsinghua University, Beijing 100084, China; 3) School of Materials Science and Engineering, University of New South Wales, NSW 2052, Australia

Funds:

This work was financially supported by the National Natural Science Foundation of China (No 59872004), the Cross-Century Talents Projects of Educational Ministry of China, China Postdoctoral Science Foundation and the Anthony Mason Fellowship at the University of New South Wales, Australia.

Received: 31 December 2000; Available Online: 15 June 2021

Graphical Abstract

Abstract

Abstract

AlN whiskers or dendrites were synthesized with asublimation-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 μm 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[2111] and[1011] planes. It is concluded that the whiskers or dendrites grow via the vapor-solidmechanism.
- aluminum nitride,
- whiskers,
- dendrites,
- sublimation-recrystallization method