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Effect of cast iron microstructure on adherence of an epoxy protection

Freulon, Alexandre and Trinh, Anh Truc and Lacaze, Jacques and Malard, Benoît and Vu, Ke Oanh Effect of cast iron microstructure on adherence of an epoxy protection. (2020) International Journal of Cast Metals Research, The. 165-170. ISSN 1364-0461

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Official URL: https://doi.org/10.1080/13640461.2020.1778151

Abstract

To study the influence of the microstructure of cast iron on the adhesion of an epoxy coating, ferritic, pearlitic and austempered samples were prepared in as-received, polished and oxidised states. A pull-off test (dry adhesion) was performed before immersing in water while the crosscut test was made after 24 days of exposition in distilled water (wet adhesion). X-rays were combined with optical microscopy (LOM) and scanning electron microscopy (SEM) for surface analysis. The adhesion of the epoxy coating on the cast iron surface firstly depends on the roughness of the surface; polished samples showed high adherence by comparison with asreceived samples. On the oxidised samples, the surface oxide significantly improves the adhesion of the coating in both dry and wet states for all three sample microstructure. The presence of carbide in the structure was observed to decrease adherence

Item Type:Article
HAL Id:hal-03054007
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > Vietnam Academy of Science and Technology - VAST (VIETNAM)
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Deposited On:13 Nov 2020 07:09

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