Formation and Stability of Metastable Tungsten Carbide Nanoparticles

被引：10

作者：

Kolel-Veetil, Manoj K. ^{[1
]}

Goswami, Ramasis ^{[2
]}

Fears, Kenan P. ^{[1
]}

Qadri, Syed B. ^{[2
]}

Lambrakos, Samuel G. ^{[2
]}

Laskoski, Matthew ^{[1
]}

Keller, Teddy M. ^{[1
]}

Saab, Andrew P. ^{[1
]}

机构：

[1] US Navy, Res Lab, Div Chem, Washington, DC 20375 USA

[2] US Navy, Res Lab, Mat Sci & Technol Div, Washington, DC 20375 USA

来源：

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2015年 / 24卷 / 05期

关键词：

alkyne; ethynyl; tungsten carbide; WC; W2C; core-shell; LOW-TEMPERATURE; FILMS;

D O I：

10.1007/s11665-015-1476-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The low temperature transformation pathways of tungsten carbide formation in the nanoscale regime were investigated using a reactive carbon molecule and tungsten. WC core/W shell nanoparticles produced by the decomposition of metastable W2C were discovered using TEM. XRD studies revealed both the elemental and carbide phases of tungsten. It was observed that the metastable W2C phase can be stabilized at RT by carbon encapsulation. These findings open new avenues to access core-shell morphologies of refractory carbides and to stabilize W2C nanoparticles at RT.

引用

页码：2060 / 2066

页数：7

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