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Characterization of cracking mechanisms of carbon anodes used in aluminum industry by optical microscopy and tomography

Amrani Salah, Kocaefe Duygu, Kocaefe Yasar S., Bhattacharyay Dipankar, Bouazara Mohamed et Morais Brigitte. (2016). Characterization of cracking mechanisms of carbon anodes used in aluminum industry by optical microscopy and tomography. Journal of Materials Engineering and Performance, 25, (10), p. 4274-4282.

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URL officielle: http://dx.doi.org/doi:10.1007/s11665-016-2257-3

Résumé

The objective of this work is to understand the different mechanisms of crack formation in dense anodes used in the aluminum industry. The first approach used is based on the qualitative characterization of the surface cracks and the depth of these cracks. The second approach, which constitutes a quantitative characterization, is carried out by determining the distribution of the crack width along its length as well as the percentage of the surface containing cracks. A qualitative analysis of crack formation was also carried out using 3D tomography. It was observed that mixing and forming conditions have a significant effect on crack formation in green anodes. The devolatilization of pitch during baking causes the formation and propagation of cracks in baked anodes in which large particles control the direction of crack propagation.

Type de document:Article publié dans une revue avec comité d'évaluation
Volume:25
Numéro:10
Pages:p. 4274-4282
Version évaluée par les pairs:Oui
Date:2016
Sujets:Sciences naturelles et génie > Génie > Génie des matériaux et génie métallurgique
Département, module, service et unité de recherche:Départements et modules > Département des sciences appliquées > Module d'ingénierie
Mots-clés:carbon anode, cracking mechanisms, optical microscopy, tomography
Déposé le:17 avr. 2019 23:59
Dernière modification:17 avr. 2019 23:59
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