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Journal of Materials Engineering and Performance

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02-08-2016

Characterization of Cracking Mechanisms of Carbon Anodes Used in Aluminum Industry by Optical Microscopy and Tomography

Authors: Salah Amrani, Duygu Kocaefe, Yasar Kocaefe, Dipankar Bhattacharyay, Mohamed Bouazara, Brigitte Morais

Published in: Journal of Materials Engineering and Performance | Issue 10/2016

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Abstract

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.

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Title: Characterization of Cracking Mechanisms of Carbon Anodes Used in Aluminum Industry by Optical Microscopy and Tomography
Authors: Salah Amrani
Duygu Kocaefe
Yasar Kocaefe
Dipankar Bhattacharyay
Mohamed Bouazara
Brigitte Morais
Publication date: 02-08-2016
Publisher: Springer US
Published in: Journal of Materials Engineering and Performance / Issue 10/2016
Print ISSN: 1059-9495
Electronic ISSN: 1544-1024
DOI: https://doi.org/10.1007/s11665-016-2257-3

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