Size-dependent ignition temperature of metallic compounds fabricated by self-propagating high-temperature synthesis |
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| Authors: | Xiaojing Feng Hui Li D. Duan |
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| Affiliation: | 1. Institute of Mining Technology, College of Mining , Taiyuan University of Technology , Taiyuan , 030024 , China;2. College of Materials Science and Technology , Taiyuan University of Technology , Taiyuan , 030024 , China |
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| Abstract: | Considering the diffusion reaction at solid interfaces, the ignition temperature of compounds fabricated by self-propagating high-temperature synthesis (SHS) is modelled with the help of size-dependent activation energy. As reactant size decreases, ignition temperature also decreases. This is because of increased contact areas between the reactants and the lowered diffusion barrier, both of which must be calculated specifically for reactants in nanoscale. The model predictions and experimental results are consistent for some metallic compounds. |
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| Keywords: | ignition metallic alloy size effect combustion SHS |
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