1. Thermochemistry and growth mechanism of TiC nanowires synthesized by carbothermal reduction.
- Author
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Xie, Xiaochun, Ou, Guosong, Men, Hongquan, Jiang, Min, Lin, Wenxin, and Chen, Jianjun
- Subjects
NANOWIRES ,THERMOCHEMISTRY ,SILICON nanowires ,FIELD emission electron microscopy ,THERMODYNAMICS ,TITANIUM carbide - Abstract
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 TiCl
x 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. [ABSTRACT FROM AUTHOR]- Published
- 2020
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