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Acoustic Emission-based Assessment of Reinforcement Corrosion: Damage Monitoring and Bond Modelling of Corrosion Effects in Reinforced Concrete KU Leuven

Charlotte Van Steen
Reinforcement corrosion is believed to be the major deterioration phenomenon in reinforced concrete (RC) structures, causing large direct and indirect financial costs. While tools for modelling and design of new RC structures are mature, methods for modelling and assessment of the remaining structural capacity of existing RC structures are much less developed. A prerequisite for the assessment of these structures is the development of reliable ...

The use of a saturated long carbon chain sodium monocarboxylate for the corrosion inhibition of lead objects in atmospheric conditions and in acetic acid corrosive solutions Universiteit Gent

. Elbeshary Aldesouki Ahmed Mohammed, Mieke Adriaens
In this paper, a saturated long carbon chain sodium monocarboxylate containing 18 carbons-labeled- NaC(18-)was used for the formation of a lead carboxylate coating to inhibit the corrosion of lead in atmospheric conditions and in acetic acid corrosive solutions. The effect of stirring of the coating solution during the coating process on the inhibition efficiency was studied. The coating was characterized by scanning electron microscopy and ...

Application of Electrochemical Frequency Modulation (EFM) to Monitor Localized Corrosion and Efficiency of Green Inhibitors (Toepassing van de elektrochemische frequentie modulatie (EFM) techniek voor het monitoren van lokale corrosie en de efficientie va KU Leuven

Amongst existing electrochemical measuring techniques for uniform corrosion, (e.g. LPR, EIS, etc), EFM (Electrochemical Frequency Modulation) has emerged as a promising technique with enormous untapped potential. Besides its use for determining the corrosion rate without a prior knowledge of the so-called Tafel constants, EFM offers the measurement of the corrosion rate, Tafel parameters and causality factors (CFs) in a single set of data. The ...

Corrosion and corrosion prevention in heat exchangers Universiteit Gent

Willem Faes, Steven Lecompte, Zaaquib Ahmed, Johan Van Bael, Robbe Salenbien, Kim Verbeken, Michel De Paepe
In many industries and processes, heat exchangers are of vital importance as they are used to transfer heat from one fluid to another. These fluids can be corrosive to heat exchangers, which are usually made of metallic materials. This paper illustrates that corrosion is an important problem in the operation of heat exchangers in many environments, for which no straightforward answer exists. Corrosion failures of heat exchangers are common, and ...

Corrosion resistance of crystalline and amorphous CuZr alloys in NaCl aqueous environment and effect of corrosion inhibitors Universiteit Hasselt

Chenyang XIE, I Milosev, Frank RENNER, A Kokalj, P Bruna, D Crespo
CuZr alloys are the basis of a family of metallic glasses with large glass forming ability and remarkable mechanical properties. The corrosion response of prepared crystalline and amorphous CuxZr100-x alloys (x = 40, 50, 64 at%), as well as bare Cu and Zr, in a severe corrosive environment, was tested. The alloys were immersed in 3 wt% NaCl aqueous solution. With the aim to increase the resistance of copper as less corrosion alloy component, ...

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 ...