| Autor: |
Narkiewicz, Urszula, Podsiadły, Marcin, Pełech, Iwona, Arabczyk, Waleran, Woźniak, M.J., Kurzydłowski, Krzysztof J. |
| Zdroj: |
Diffusion and Defect Data Part B: Solid State Phenomena; October 2007, Vol. 128 Issue: 1 p249-254, 6p |
| Abstrakt: |
Nanocrystalline cobalt was carburised with ethylene in the range 340– 500°C to obtain Co(C) nanocapsules. The carbon deposit was reduced by a flow of hydrogen in the range 500– 560°C. The reduction kinetics were studied using thermogravimetry, described by the equation: α = Α[1-exp(-kt)n]. The apparent activation energy of the reduction process of the carbon deposit was determined. After carburisation and reduction the samples were examined by XRD and HRTEM. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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