Synthesis of Si3N4 whiskers by rapid nitridation of silicon droplets

被引:9
|
作者
Yang, Jinguang [1 ]
Wu, Ping [1 ]
Zhang, Yanping [2 ]
Yan, Dan [1 ]
Zhang, Shiping [1 ]
Li, Ya-nan [1 ]
Wang, Li [3 ,4 ]
机构
[1] Univ Sci & Technol Beijing, Sch Math & Phys, Beijing Key Lab Magnetophotoelect Composite & Int, Beijing 100083, Peoples R China
[2] Cent Res Inst Bldg & Construct Co Ltd, Met Grp Corp, Beijing, Peoples R China
[3] Univ Sci & Technol Beijing, Sch Energy & Environm Engn, Beijing, Peoples R China
[4] Beijing Engn Res Ctr Energy Saving & Environm Pro, Beijing, Peoples R China
基金
国家重点研发计划;
关键词
morphology; nitridation; silicon nitride; MECHANISM; METALS;
D O I
10.1111/ijac.13348
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Belt-like beta-Si3N whiskers were successfully synthesized by nitriding of liquid silicon without catalysts at 1500 degrees C by using micron-sized silicon powders within 10 minutes. Silicon droplets formed by the melting of silicon particles greatly facilitates the diffusion of nitrogen. Several whiskers cling together to form a whisker-cluster. The whisker-clustermorphology results from nitriding of separate silicon droplets. The growth of the belt-like beta-Si3N4 whisker was controlled by vapor-liquid-solid mechanism. The synthesis of silicon nitride whiskers can be effectively improved by nitriding liquid phase silicon.
引用
收藏
页码:296 / 303
页数:8
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