Abstract
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.
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The authors wish to acknowledge the Office of Naval Research (ONR) for the financial support of this work.
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Kolel-Veetil, M.K., Goswami, R., Fears, K.P. et al. Formation and Stability of Metastable Tungsten Carbide Nanoparticles. J. of Materi Eng and Perform 24, 2060–2066 (2015). https://doi.org/10.1007/s11665-015-1476-3
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DOI: https://doi.org/10.1007/s11665-015-1476-3