期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 448, 期 1-2, 页码 215-218出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2006.10.060
关键词
nanostructures; chemical synthesis; X-ray diffraction; thermal analysis
Nanocrystalline tungsten carbide (WC) was synthesized via a simple route by the reaction of metallic magnesium with sodium carbonate and tungsten hexachloride in an autoclave at 600 degrees C. X-ray powder diffraction pattern indicated that the product was hexagonal WC, and the cell constant was a = 2.913 angstrom, c = 2.838 angstrom. Transmission electron microscopy image showed that it consisted of particles with an average size of 20 nm. The product was also studied by BET and TGA. It had good thermal stability and oxidation resistance below 500 degrees C in air. (c) 2006 Elsevier B.V. All rights reserved.
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