Thermal dissociation of iron carbonyls during growth of iron whiskers |
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| Authors: | V N Babin Yu A Belousov I V Dobryakova Yu S Nekrasov V G Syrkin A A Uel’skii |
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| Institution: | (1) A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 ul. Vavilova, 119991 Moscow, Russian Federation;(2) State Research Institute of Chemistry and Technology of Organoelement Compounds, 38 sh. Entuziastov, 111123 Moscow, Russian Federation |
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| Abstract: | Methods for the preparation of iron whiskers in chemical transport reactions of thermal dissociation of iron penta- and dodecacarbonyls and carbidocarbonyl clusters Fe5C(CO)15 were described. The morphology, structure, and chemical composition of the whiskers were studied. The main factors determining the growth rate and mechanical properties of the whiskers were revealed. A model for the mechanism of thermal dissociation of iron carbonyls was proposed. This process was shown to be a chain radical ion reaction initiated via the scheme of activating complex formation. Analogies between the thermal dissociation of iron carbonyls in the adsorption layer and the known radical ion processes in the liquid and gas phases were found.Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 9, pp. 1826–1836, September, 2004. |
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| Keywords: | whiskers iron carbonyls thermal dissociation reaction mechanism |
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