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Carburization of austenitic and ferritic steels in carbon-saturated sodium: preliminary results on the diffusion coefficient of carbon at 873 K

Romedenne, Marie and Rouillard, Fabien and Duprey, Brigitte and Hamon, Didier and Tabarant, Michel and Monceau, Daniel Carburization of austenitic and ferritic steels in carbon-saturated sodium: preliminary results on the diffusion coefficient of carbon at 873 K. (2017) Oxidation of Metals, 87 (5-6). 643-653. ISSN 0030-770X

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Official URL: http://dx.doi.org/10.1007/s11085-017-9733-5

Abstract

Three commercial steels were exposed to carbon-saturated sodium at 873 K for durations up to 5000 h. Analyses by optical microscopy, infrared-inductive carbon combustion, electron probe microanalysis and glow discharge optical emission spectrometry revealed important carburization of the steels. The carbon concentration at the metal–sodium interface reached equilibrium, and the carbon uptake varied with the square root of time. The carburization kinetics was well described by assuming that diffusion of carbon was coupled with rapid carbide precipitation and equilibrium partitioning of carbon between the metal and precipitates phases.

Item Type:Article
Additional Information:Thanks to Springer Verlag editor. The original PDF of the article can be found at https://link.springer.com/article/10.1007%2Fs11085-017-9733-5
HAL Id:hal-01579031
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Commissariat à l'Energie Atomique et aux énergies alternatives - CEA (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
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Deposited By: cirimat webmestre
Deposited On:30 Aug 2017 09:52

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