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Towards understanding and prediction of atmospheric corrosion of an Fe/Cu corrosion sensor via machine learning Vrije Universiteit Brussel

Zibo Pei, Dawei Zhang, Yuanjie Zhi, Tao Yang, Lulu Jin, Dongmei Fu, Xuequn Cheng, Herman Terryn, Johannes M. C. Mol, Xiaogang Li, et al.

The atmospheric corrosion of carbon steel was monitored by a Fe/Cu type galvanic corrosion sensor for 34 days. Using a random forest (RF)-based machine learning approach, the impacts of relative humidity, temperature and rainfall were identified to be higher than those of airborne particles, sulfur dioxide, nitrogen dioxide, carbon monoxide and ozone on the initial atmospheric corrosion. The RF model demonstrated higher accuracy than ...

Review on modelling of corrosion under droplet electrolyte for predicting atmospheric corrosion rate Vrije Universiteit Brussel

Bangalore Gangadharacharya Koushik, Nils Van Den Steen, Mesfin Haile Mamme, Yves Van Ingelgem, Herman Terryn

Atmospheric corrosion of metals is the most common type of corrosion which has a significant impact on the environment and operational safety in various situations of everyday life. Some of the common examples can be observed in land, water and air transportation systems, electronic circuit boards, urban and offshore infrastructures. The dew drops formed on metal surface due to condensation of atmospheric moisture facilitates corrosion as an ...

Qualitative comparison of 2D and 3D atmospheric corrosion detection methods Universiteit Antwerpen

Thomas De Kerf, Navid Hasheminejad, Johan Blom, Steve Vanlanduit
In this article, we report the use of a Confocal Laser Scanning Microscope (CLSM) to apply a qualitative assessment of atmospheric corrosion on steel samples. From the CLSM, we obtain high-resolution images, together with a 3D heightmap. The performance of four different segmentation algorithms that use the high-resolution images as input is qualitatively assessed and discussed. A novel 3D segmentation algorithm based on the shape index is ...

Degradation of galvanised iron roofing material in Tanzania by atmospheric corrosion Universiteit Antwerpen

Sanja Potgieter-Vermaak, A. Mmari, Rene Van Grieken, R.I. McCrindle, J.H. Potgieter
Galvanised iron is popular in many applications, particular as a roofing material. However, just like other materials, especially metallic ones, it is prone to degradation by corrosion. In this particular study, the degradation of galvanised roof sheets was investigated at a coastal, urban and rural site in Tanzania, Africa. Samples were exposed to various outdoor environments over a period of 3 years. In addition, some accelerated laboratory ...

Predicting the effect of droplet geometry and size distribution on atmospheric corrosion Vrije Universiteit Brussel

Nils Van Den Steen, Yaiza Gonzalez-Garcia, Herman Terryn, Yves Van Ingelgem
A new approach is proposed to numerically predict and study atmospheric corrosion for ranging droplet size distributions and the influence of the droplet geometry. The proposed methodology allows for a corrosion prediction based on observed droplet size distributions and droplet contact angles. A mechanistic finite element model, including oxygen transport and Butler-Volmer kinetics, is solved in order to obtain the current density as a function ...

Investigation of the importance of heat transfer during thin electrolyte formation in atmospheric corrosion using a novel experimental approach Vrije Universiteit Brussel

Bangalore Gangadharacharya Koushik, Nils Van Den Steen, Herman Terryn, Yves Van Ingelgem

During atmospheric corrosion of metals, the evolution of thin-film electrolyte thickness is the primary factor that determines corrosion rate. Understanding the evolution of the electrolyte thickness as a function of the key environmental parameters is yet to be achieved. Therefore, in the present article, a novel methodology has been developed to conduct experiments under regulated environment to measure the evolution of the film thickness ...