| Original Articles |
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A New Method for Preparation of Nanocrystalline Molybdenum Nitride |
| SHEN Long-Hai;CUI Qi-Liang;ZHANG Jian;LI Xue-Fei;ZHOU Qiang;ZOU Guang-Tian |
| National Key Laboratory of Superhard Materials, Jilin University, Changchun 130012 |
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| Cite this article: |
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SHEN Long-Hai, CUI Qi-Liang, ZHANG Jian et al 2005 Chin. Phys. Lett. 22 3192-3194 |
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Abstract Nanocrystalline molybdenum nitride (γ-Mo2N) with the cubic structure is prepared by the direct current arc discharge method in N2 gas, using metal Mo or W rod as a cathode. The x-ray diffraction (XRD) and transmission electron microscopy (TEM) are used to characterize the product. It is found that the conversion of Mo to γ-Mo2N and affinity of Mo to N2 are determined by the nitrogen pressure. Moreover, we compare the effect of Mo and W rod as a cathode for preparing γ-Mo2N. The average size of γ-Mo2N particles is about 5nm. The rapid quenching mechanism can be used to explain the formation of nanocrystalline γ-Mo2N.
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| Keywords:
81.10.Bk
81.05.Je
78.67.Bf
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Published: 01 December 2005
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| PACS: |
81.10.Bk
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(Growth from vapor)
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81.05.Je
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(Ceramics and refractories (including borides, carbides, hydrides, nitrides, oxides, and silicides))
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78.67.Bf
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(Nanocrystals, nanoparticles, and nanoclusters)
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