Rapid synthesis of Si3N4 dendritic crystals

被引：10

作者：

Bai, YJ ^{[1
]}

Wang, CG

Qi, YX

Zhu, B

Wang, YX

Liu, YX

Geng, GL

机构：

[1] Shandong Univ, Carbon Fibers Engn Res Ctr, Jinan 250061, Peoples R China

[2] Shandong Univ, Minist Educ, Key Lab Liquid Struct & Heredity Mat, Jinan 250061, Peoples R China

来源：

SCRIPTA MATERIALIA | 2006年 / 54卷 / 03期

关键词：

dendritic growth; nitrides; high-resolution electron microscopy (HRTEM); transmission electron microscopy (TEM); X-ray diffraction (XRD);

D O I：

10.1016/j.scriptamat.2005.10.013

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Si3N4 dendritic crystals with coexisting alpha and beta polymorphs have been synthesized by a rapid metathesis reaction between SiCl4 and slightly excessive NaN3 at an initial reaction temperature of 100 degrees C. The growth of the branches is perpendicular to the trunks. The formation of the dendrites can be ascribed to the vapor-solid mechanism. Reaction conditions, such as the reaction temperature and the ratio of reagents, are key factors for controlling the synthesis of the branched Si3N4 structures. (c) 2005 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：447 / 451

页数：5

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