High sensitivity electrical resistance sensors for indoor corrosion monitoring

Kouřil, Milan; Prošek, Tomáš; Scheffel, Bert; Dubois, François

doi:10.1179/1743278212y.0000000074

Cited by 40 publications

(34 citation statements)

References 19 publications

(37 reference statements)

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“…The most commonly used non-electrochemical techniques are the coupon test measurement, the electrical resistance (ER) method [16][17], and visual inspection. As a traditional technique, the coupon test method is considered the "gold standard" of corrosion testing and is certainly the simplest way to evaluate metallic corrosion.…”

Section: Introductionmentioning

confidence: 99%

A comparative study on corrosion kinetic parameter estimation methods for the early stage corrosion of Q345B steel in 3.5wt% NaCl solution

Cai

Wen

Jin

2017

Int J Miner Metall Mater

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Corrosion kinetic parameters play an important role in researchers' ability to understand and predict corrosion behavior. The corrosion kinetic parameters of structural steel Q345B specimens immersed in 3.5wt% NaCl solution for 1-2 h were determined using linear polarization resistance (LPR), Tafel-curve multiparameter fitting, electrochemical impedance spectroscopy (EIS), and electrochemical frequency modulation (EFM) methods. The advantages and disadvantages of each method were investigated and discussed through comparative investigation. Meanwhile, the average corrosion rate was examined using traditional coupon tests. The results showed that the corrosion current density values estimated by EFM at a base frequency of 0.001 Hz and those obtained by Tafel-curve four-parameter fitting (TC4) are similar and consistent with the results of coupon tests. Because of their slight perturbation of the corrosion system, EIS and EFM/TC4 in collaborative application are the recommended techniques for determining the kinetics and the corresponding parameters for the homogeneous corrosion of the naked metal. In our study of the electrochemical kinetics, we obtained much more abundant and accurate electrochemical kinetic parameters through the combined use of different electrochemical methods.

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Section: Introductionmentioning

confidence: 99%

A comparative study on corrosion kinetic parameter estimation methods for the early stage corrosion of Q345B steel in 3.5wt% NaCl solution

Cai

Wen

Jin

2017

Int J Miner Metall Mater

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“…The resistometric method is based on the electric resistance (ER) measurement from which the corrosion rate (r corr ) can be calculated from the decrease of sample thickness caused by corrosion (∆d). Following formulas can be employed for the calculation [45][46][47]:…”

Section: Methodsmentioning

confidence: 99%

Inhibition efficiency of sodium salts of carboxylic acids on corrosion of lead in archive environment

Strachotová

Kouřil

Kuchťáková

et al. 2019

Koroze a Ochrana Materialu

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Lead in archive environment suffers from severe corrosion attack caused by the organic acids’ vapours usually presented in such an environment. One of possible ways of corrosion protection of lead is its surface treatment by solutions of sodium salts of monocarboxylic acids (general formula CH3(CH2)n-2COONa, noted NaCn, n = 10, 11, 12). The principle of this corrosion protection is a creation of conversion coating on the lead’s surface, which decreases corrosion rate of lead in the atmospheric environment polluted by organic acids’ vapour. Our research aims at the selection of a suitable protection system that would be applicable to conservation of historical lead in archives and museums. This paper evaluates the corrosion behaviour of treated lead based on the values of polarisation resistance and shape of potentiodynamic curves in simulated corrosive environment (0.01 mol l−1 solution of acetic acid). The lead samples with different state of surface (pure, corroded and electrochemically cleaned) were treated with sodium salts of monocarboxylic acids NaCn (n = 10, 11, 12) having concentration of 0.01 and 0.05 mol l−1. In simulated corrosive atmosphere (above 0.001 mol l−1 acetic acid solution vapours), corrosion rate was measured by means of electrical resistance technique. The inhibition efficiency of monocarboxylic acids is dependent on their carbon chain length and their concentration. The greatest inhibiting efficiency in corrosive atmospheres and for all lead samples was observed for the sodium salt of dodecanoic acid having concentration of 0.05 mol l−1. Artificially created corrosion products and salt coatings were analysed by X-ray diffraction analysis and their surface morphology was observed by scanning electron microscopy. A protective salt coatings are mainly composed of metallic soaps in dimer form.

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“…The corrosion loss was quantified by the electrical resistance technique using brass ER‐probes. Details on the resistance probes and the electrical resistance technique were published in . Electrical resistances of the sensing and reference parts of the electrode necessary for calculation of the corrosion loss were recorded by ACD‐03 logger (MetriCorr ApS, Denmark).…”

Section: Methodsmentioning

confidence: 99%

Contribution of protein and polysaccharide binders to corrosion of gold‐imitating brass in illuminated manuscripts

Kouřil

Jamborová

Stoulil

et al. 2015

Materials & Corrosion

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The survey of 10-century-old illuminations showed that the gold-like areas were made with the use of brass powder. Since this layer has been showing significant damage, it is vital to identify the degradation mechanisms to prevent the priceless manuscript from further deterioration. Degradation of the pseudo-gilded areas, such as darkening of the metal phase and disintegration of the binder, are well visible on the illuminations. The aim of the study was to compare the corrosivity of brass induced by binders using artificial aging tests modelling the conditions for the deposition of illuminated documents in the archives. Egg white, gum Arabic, isinglass and parchment glue were applied throughout the experiments. The samples on brass coupons and electrical resistance probes (ER-probes) were subjected to artificial aging at a high relative humidity and in the air containing acetic acid vapour and the effect of an increased relative humidity on the corrosion behaviour of brass was evaluated. Corrosion depth of the ER-probes versus time was evaluated as well. The results show that the presence of the binder layer on brass increases the corrosion rate of brass at an elevated relative humidity of ambient air. Proteinbased binders resulted in a higher corrosion rate of brass probes compared to that of polysaccharide-based binder -gum Arabic.

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High sensitivity electrical resistance sensors for indoor corrosion monitoring

Cited by 40 publications

References 19 publications

A comparative study on corrosion kinetic parameter estimation methods for the early stage corrosion of Q345B steel in 3.5wt% NaCl solution

A comparative study on corrosion kinetic parameter estimation methods for the early stage corrosion of Q345B steel in 3.5wt% NaCl solution

Inhibition efficiency of sodium salts of carboxylic acids on corrosion of lead in archive environment

Contribution of protein and polysaccharide binders to corrosion of gold‐imitating brass in illuminated manuscripts

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