Fabrication and Characterization of Short Silicon Nitride Fibers from Direct Nitridation of Ferrosilicon in N2 Atmosphere

被引：4

作者：

Guan, Jiasuo ^{[1
]}

Wang, Yaohui ^{[1
,2
]}

Cheng, Laifei ^{[1
]}

Xie, Yupeng ^{[1
]}

Zhang, Litong ^{[1
]}

机构：

[1] Northwestern Polytech Univ, Sci & Technol Thermostruct Composite Mat Lab, Xian 710072, Shaanxi, Peoples R China

[2] Inner Mongolia Synthet Chem Engn Inst, Hohhot 010010, Peoples R China

来源：

MATERIALS | 2018年 / 11卷 / 10期

关键词：

ferrosilicon; direct nitridation; silicon nitride fiber; vapor-liquid-solid mechanism; POLYCARBOSILANE FIBERS; ALPHA-SI3N4; NANOBELTS; VAPOR; GROWTH; NANOWIRES; MECHANISM;

D O I：

10.3390/ma11102003

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Short silicon nitride fibers were fabricated by direct nitridation of ferrosilicon in N-2 atmosphere, and their structure and possible growth mechanism were characterized and investigated. The rod-like fibers which were -Si3N4 with a low degree of crystallization and a high aspect ratio had a diameter of about 4 m and a length close to a few millimeters. Belt-like fibers with a width about 5 m and a thickness about 1 m were also found in the nitrides. Scanning electron microscope (SEM), transmission electron microscope (TEM), high resolution transmission electron microscope (HRTEM), and selected area electron diffraction (SAED) investigations indicated that the fibers were single-crystalline -Si3N4 with few amorphous distributed in the edge region, and the fibers grew by vapor-liquid-solid (VLS) mechanism.

引用

页数：8

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