期刊
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
卷 79, 期 -, 页码 177-184出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ijrmhm.2018.12.011
关键词
Combustion; Mechanosynthesis; Vanadium carbide; Niobium carbide; Tantalum carbide
资金
- Iran University of Science and Technology (IUST)
- Spanish government [MAT2014-52407-R]
The nanoparticles of vanadium, niobium, and tantalum carbides were synthesized by a mechanically induced magnesiothermic combustion in the separate Mg/V2O5/C, Mg/Nb2O5/C, and Mg/Ta2O5/C systems. Initial materials in these systems ignited after short milling times of 10, 10, and 23 min, respectively. X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), energy-dispersive X-ray spectroscopy (EDS), high-resolution transmission electron microscopy (HRTEM) and elemental mapping techniques were employed to characterize the combustion products. In this process, magnesium reduces initial oxides to generate elemental V/Nb/Ta to react with carbon, forming the carbide phases.
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