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Materials 2017, 10(10), 1192; https://doi.org/10.3390/ma10101192

Modeling Calculation and Synthesis of Alumina Whiskers Based on the Vapor Deposition Process

1
Glarun Technology Co. Ltd., Nanjing 211106, China
2
The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China
*
Authors to whom correspondence should be addressed.
Received: 28 September 2017 / Revised: 12 October 2017 / Accepted: 13 October 2017 / Published: 17 October 2017
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Abstract

This study simulated the bulk structure and surface energy of Al2O3 based on the density of states (DOS) and studied the synthesis and microstructure of one-dimensional Al2O3 whiskers. The simulation results indicate that the (001) surface has a higher surface energy than the others. The growth mechanism of Al2O3 whiskers follows vapor–solid (VS) growth. For the (001) surface with the higher surface energy, the driving force of crystal growth would be more intense in the (001) plane, and the alumina crystal would tend to grow preferentially along the direction of the (001) plane from the tip of the crystal. The Al2O3 grows to the shape of whisker with [001] orientation, which is proved both through modeling and experimentation. View Full-Text
Keywords: growth simulation; generation mechanism; Al2O3 whiskers; surface energy growth simulation; generation mechanism; Al2O3 whiskers; surface energy
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Gong, W.; Li, X.-C.; Zhu, B.-Q. Modeling Calculation and Synthesis of Alumina Whiskers Based on the Vapor Deposition Process. Materials 2017, 10, 1192.

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