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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, ...

Corrosion and wear of zinc in various aqueous based environments KU Leuven

Emmanuel Georgiou
The corrosion and corrosive wear resistance of zinc sliding against 440C martensitic stainless steel counterface, were studied in aqueous based solutions having different NaCl and sodium molybdate dihydrate concentrations respectively. The main objective was to investigate the effect of aqueous based environments and corrosion inhibitors on the interface and tribological characteristics of this tribosystem, as in several cases the formation of a ...

Corrosion prevention by detection of aqueous liquids using sensors with a percolation threshold transition KU Leuven

Helge Pfeiffer, Martine Wevers
In airplanes aqueous liquids arising from spillage (especially in the galley and lavatory area) or from passengers boarding at rainy weather conditions can enter the space between the floor panels when sealings are damaged, and it is known that this penetration can cause heavy corrosion in the underlying floor beam structure. A reliable sensor for aqueous liquids which is interrogated at least on a monthly base, or even more frequently, could ...

Application of In Situ Liquid Cell Transmission Electron Microscopy in Corrosion Studies: A Critical Review of Challenges and Achievements Vrije Universiteit Brussel

Ali Kosari, Henny Zandbergen, Frans Tichelaar, Peter Visser, Arjan Mol

Identifying corrosion initiation events in metals and alloys demands techniques that can provide temporal and spatial resolution simultaneously. Transmission electron microscopy (TEM) enables one to obtain microstructural and chemical descriptors of materials at atomic/nanoscopic level and has been used in corrosion studies of many metal-electrolyte combinations. Conventionally, ex situ and quasi in situ TEM studies of pre- and post-corroded ...

The development of an environmentally friendly coating for the corrosion inhibition of lead objects Universiteit Gent

Michel De Keersmaecker
Despite all the efforts, our cultural heritage is being destroyed faster today than at any time in the past. Therefore, an understanding of these basic U+2018corrosionU+2019 processes causing deterioration - the breaking up and the aging of ancient artifacts - is urgently needed. Extensive research towards an intervention to protect and preserve our cultural heritage has become essential for the cultural and social development of present and ...

The use of odd random phase electrochemical impedance spectroscopy to study lithium-based corrosion inhibition by active protective coatings Vrije Universiteit Brussel

Mats Meeusen, Peter Visser, Lucia Fernandez Macia, Annick Hubin, Herman Terryn, Johannes M. C. Mol

In this work, the study of the time-dependent behaviour of lithium carbonate based inhibitor technology for the active corrosion protection of aluminium alloy 2024-T3 is presented. Odd random phase electrochemical impedance spectroscopy (ORP-EIS) is selected as the electrochemical tool to study the corrosion protective properties of a model organic coating with and without lithium carbonate as a function of immersion time, by examination of ...

Reference electrodes for electrochemical measurements in high-temperature high-pressure aqueous environments - Review of potential corrections for 'external' reference systems KU Leuven

Walter Bogaerts
© 2016 Elsevier Ltd Corrosion studies in high-temperature high-pressure aqueous environments, and in particular electrochemical corrosion measurements in these environments, are again becoming more important for a number of industrial applications. Reliable and accurate electrochemical measurements in high-temperature high-pressure aqueous systems (i.e. up to ca. 300 °C) are, however, not straightforward. Especially the stability of so-called ...

Effect of corrosion inhibitors on cement paste pore structure Universiteit Gent

Lin Luo, Guang Ye
The influence of admixed corrosion inhibitors on the pore structure of cement paste was evaluated by means of mercury intrusion porosimetry. Portland cement CEM I 52-5N was used. Two different corrosion inhibitors were selected within this study. One was a calcium nitrite-based corrosion inhibitor, which contained minimum 30 % active ingredients by mass. The other corrosion inhibitor was an aqueous mixture of amine and ester. By means of mercury ...

Effect of pH on Stress Corrosion Cracking of 6082 Al Alloy KU Leuven

Emmanuel Georgiou
© 2018 by the authors. Licensee MDPI, Basel, Switzerland. In this work, the effect of pH (3, 7 and 10) on the stress corrosion cracking behavior of 6082 aluminum alloy, in a 0.3 M sodium chloride (NaCl) aqueous based solution was investigated. The stress corrosion cracking behavior was studied with slow strain rate testing, whereas failure analysis of the fractured surfaces was used to identify the dominant degradation mechanisms. The ...