Simple synthesis of nano-sized refractory metal carbides by combustion process

• Published in: Journal of materials science Vol. 46; no. 18; pp. 6000 - 6006
• Main Authors: Won, Hyung Il, Hayk, Nersisyan, Won, Chang Whan, Lee, Hyuk Hee
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.09.2011; Springer; Springer Nature B.V
• Subjects: Analysis; Carbides; Carbon; Carburization (corrosion); Carburizing; Characterization and Evaluation of Materials; Chemistry and Materials Science; Classical Mechanics; Combustion; Crystallography and Scattering Methods; Fluorides; Magnesium; Materials Science; Metal carbides; Molybdenum carbide; Molybdenum oxides; Molybdenum trioxide; Nanostructure; Niobium carbide; Niobium oxides; Oil and gas field equipment; Polymer Sciences; Powders; Refractory materials; Scanning electron microscopy; Sodium fluoride; Solid Mechanics; Tantalum; Tantalum oxides; Titanium carbide; Titanium dioxide; Transition metal compounds; Transition metal oxides; Transition metals; Tungsten oxides; Zirconium carbide; Zirconium dioxide; Carbide; Combustion Reaction; Carburization; Combustion Temperature; Combustion Synthesis
• ISSN: 0022-2461; 1573-4803
• DOI: 10.1007/s10853-011-5562-0

Combustion reactions of transition metal oxides (WO 3 , MoO 3 , Ta 2 O 5 , Nb 2 O 5 , ZrO 2 , and TiO 2 ), magnesium, carbon, and sodium fluoride produce a range of nanostructured transition metal carbides (W 2 C, Mo 2 C, TaC, NbC, ZrC, and TiC) with low amounts of free carbon. Sodium fluoride improves unfavorable combustion regimes and facilitates the carburization of metal carbides. The average particle size of carbides prepared in this study was below 100 nm in pure phase. The carbides were characterized by X-ray diffraction, scanning electron microscopy, specific surface area analysis, and carbon analysis.