Thermochemistry and growth mechanism of TiC nanowires synthesized by carbothermal reduction

被引：5

作者：

Xie, Xiaochun ^{[1
]}

Ou, Guosong ^{[1
]}

Men, Hongquan ^{[1
]}

Jiang, Min ^{[1
]}

Lin, Wenxin ^{[1
]}

Chen, Jianjun ^{[1
]}

机构：

[1] Zhejiang Sci Tech Univ, Coll Mat Sci & Engn, Dept Mat Engn, Hangzhou 310018, Peoples R China

来源：

INORGANIC AND NANO-METAL CHEMISTRY | 2020年 / 50卷 / 05期

关键词：

TiC nanowires; growth mechanism; thermodynamic reaction; carbothermal reduction; CUTTING PERFORMANCE; CERAMIC TOOLS; WHISKERS; MICROSTRUCTURE; MATRIX; PHASE; SITU; WEAR;

D O I：

10.1080/24701556.2020.1716006

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Titanium carbide (TiC) nanowires are synthesized by carbothermal reduction reaction at 1473-1673 K in argon atmosphere. The structure and morphology of TiC nanowires are characterized by X-ray diffraction (XRD) and field emission scanning electron microscopy (FE-SEM). The chemical reaction thermodynamics and the growth mechanism of TiC nanowires are investigated based on the Ti-C-O-Cl system. It involves the formation of gaseous TiClx and CO crucial intermediates, and the further carbon reduction of TiClx to TiC. Based on the thermodynamic analysis, the two-stage growth mechanism of TiC nanowires is discussed. The work could help to analyze the thermochemistry of the carbothermal reduction reaction in the Ti-C-O-Cl system, which is beneficial to optimize the temperature and the input precursors for controlling TiC nanowires growth.

引用

页码：400 / 407

页数：8

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