Synthesis and thermal stability of nano-crystalline vanadium disilicide

被引：12

作者：

Ma, JH

Gu, YL

Shi, L

Chen, LY

Yang, ZH

Qian, YT ^{[1
]}

机构：

[1] Univ Sci & Technol China, Dept Chem, Struct Res Lab, Anhua 230026, Peoples R China

[2] Wenzhou Univ, Wenzhou 325027, Zhejiang, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2004年 / 370卷 / 1-2期

关键词：

nano-structures; vanadium disilicide; chemical synthesis; X-ray diffraction; thermal property;

D O I：

10.1016/j.jallcom.2003.09.014

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：

Nano-crystalline vanadium disilicide was successfully synthesized using vanadium tetrachloride and silicon as starting materials via reduction-silication route at 650degreesC in the molten salt solution of magnesium chloride and sodium chloride in an autoclave. X-ray powder diffraction patterns indicated that the product was hexagonal VSi2 (a = 4.572Angstrom, c = 6.372Angstrom). Transmission electron microscopy images showed that the particle size of the product was in the range of 40-60 nm in diameter. There was a strong absorption peak at 271 nm in the UV-Vis absorption spectra. The oxidation of nano-crystalline VSi2 began to proceed at the temperature of 400degreesC in air. But the product had high thermal oxidation stability below 1000degreesC. It can be used as an antioxidation coating material. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：281 / 284

页数：4

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