Journal
CERAMICS INTERNATIONAL
Volume 39, Issue 8, Pages 9671-9675Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2013.05.092
Keywords
A. Power processing; B. Nanocomposites; B. X-ray diffraction; E. Ceramics
Categories
Funding
- Fundamental Research Funds for the Central Universities [XDJK2010C009]
- Chongqing Key Natural Science Foundation [cstc2012jjB50011]
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WC-VC-Co nanocomposite powders were synthesized through simultaneous reduction and carburization of a novel precursor in vacuum at 950 degrees C for 1 h. The samples were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, high-resolution transmission electron microscopy, and X-ray photoelectron spectroscopy. The precursor consisted of nanoparticles (from 10 nm to 30 nm in diameter) with a carbon-coated core shell structure. The as-prepared composite powders comprised spherical particles with size in the range of 40-60 nm. The effects of experimental parameters and reaction mechanism were explored. The low-temperature synthesis and short reaction time were attributed to the homogeneous chemical composition of the precursor. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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