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Corrosion Monitoring and Control

A special issue of Materials (ISSN 1996-1944).

Deadline for manuscript submissions: closed (30 June 2013) | Viewed by 26808

Special Issue Editor

National Centre for Advanced Tribology at Southampton, Faculty of Engineering and the Environment, University of Southampton, Highfield, Southampton SO17 1BJ, UK
Interests: erosion and tribology resistant coatings; thermal spraying; CVD; PVD; paints; antifouling, superhydrophobic, functionally graded coatings; tribocorrosion; sensing
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

As corrosion continues to cost industries considerable sums of money and threaten safe operations as well as limit technological development there has been a renewed effort to use modern technologies to combat corrosion and to detect it. Early detection can allow alleviation technologies to be deployed or to initiate timely and cost effective maintenance. Sensing technologies and miniaturisation of systems with energy harvesting as well as remote data streaming can allow monitoring of corrosion in structures and equipment without the need for expensive retrofits or design concepts. This special issue, therefore, will look at modern trends in corrosion control capabilities and corrosion sensing. It will highlight the uptake of modern technologies such as advanced material and coating selection, new self-healing and smart technologies, cathodic protection and inhibitor performance as well as multifunctional coatings for corrosion sensing, electrochemical sensors, microelectrode arrays and microfluidic sensors for monitoring corrosion. Electrochemical sensors, for example, are becoming increasingly important as they can provide data on both general and localised corrosion which in turn allows corrosion to be treated as a real-time process variable. Using such sensor data effectively can play an important role in the optimisation of plant operations as real-time corrosion rates can be correlated with key process parameters which can be used to inform operations. This allows continuous process optimisation by minimising corrosion rates while maximising equipment usage, production rates and plant safety. Such sensing data can also be used as part of a condition monitoring system and used to trigger inspection or maintenance.
Therefore, the special issue covers solutions covering a wide range of industrial sectors.

Prof. Dr. Robert J. K. Wood
Guest Editor

Manuscript Submission Information

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Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • corrosion sensors
  • corrosion resistant coatings
  • corrosion inhibitors
  • electrochemical sensing
  • self-healing systems

Published Papers (4 papers)

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626 KiB  
Article
Study of the Microstructure Evolution of Low-pH Cements Based on Ordinary Portland Cement (OPC) by Mid- and Near-Infrared Spectroscopy, and Their Influence on Corrosion of Steel Reinforcement
by José Luis García Calvo, Mercedes Sánchez Moreno, María Cruz Alonso Alonso, Ana Hidalgo López and Juan García Olmo
Materials 2013, 6(6), 2508-2521; https://doi.org/10.3390/ma6062508 - 18 Jun 2013
Cited by 19 | Viewed by 6532
Abstract
Low-pH cements are designed to be used in underground repositories for high level waste. When they are based on Ordinary Portland Cements (OPC), high mineral admixture contents must be used which significantly modify their microstructure properties and performance. This paper evaluates the microstructure [...] Read more.
Low-pH cements are designed to be used in underground repositories for high level waste. When they are based on Ordinary Portland Cements (OPC), high mineral admixture contents must be used which significantly modify their microstructure properties and performance. This paper evaluates the microstructure evolution of low-pH cement pastes based on OPC plus silica fume and/or fly ashes, using Mid-Infrared and Near-Infrared spectroscopy to detect cement pastes mainly composed of high polymerized C-A-S-H gels with low C/S ratios. In addition, the lower pore solution pH of these special cementitious materials have been monitored with embedded metallic sensors. Besides, as the use of reinforced concrete can be required in underground repositories, the influence of low-pH cementitious materials on steel reinforcement corrosion was analysed. Due to their lower pore solution pH and their different pore solution chemical composition a clear influence on steel reinforcement corrosion was detected. Full article
(This article belongs to the Special Issue Corrosion Monitoring and Control)
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664 KiB  
Article
Kinetics of Corrosion Inhibition of Aluminum in Acidic Media by Water-Soluble Natural Polymeric Pectates as Anionic Polyelectrolyte Inhibitors
by Refat M. Hassan and Ishaq A. Zaafarany
Materials 2013, 6(6), 2436-2451; https://doi.org/10.3390/ma6062436 - 17 Jun 2013
Cited by 63 | Viewed by 7067
Abstract
Corrosion inhibition of aluminum (Al) in hydrochloric acid by anionic polyeletrolyte pectates (PEC) as a water-soluble natural polymer polysaccharide has been studied using both gasometric and weight loss techniques. The results drawn from these two techniques are comparable and exhibit negligible differences. The [...] Read more.
Corrosion inhibition of aluminum (Al) in hydrochloric acid by anionic polyeletrolyte pectates (PEC) as a water-soluble natural polymer polysaccharide has been studied using both gasometric and weight loss techniques. The results drawn from these two techniques are comparable and exhibit negligible differences. The inhibition efficiency was found to increase with increasing inhibitor concentration and decrease with increasing temperature. The inhibition action of PEC on Al metal surface was found to obey the Freundlich isotherm. Factors such as the concentration and geometrical structure of the inhibitor, concentration of the corrosive medium, and temperature affecting the corrosion rates were examined. The kinetic parameters were evaluated and a suitable corrosion mechanism consistent with the kinetic results is discussed in the paper. Full article
(This article belongs to the Special Issue Corrosion Monitoring and Control)
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523 KiB  
Article
A Novel Hydrazinecarbothioamide as a Potential Corrosion Inhibitor for Mild Steel in HCl
by Ahmed A. Al-Amiery, Abdul Amir H. Kadhum, Abu Bakar Mohamad and Sutiana Junaedi
Materials 2013, 6(4), 1420-1431; https://doi.org/10.3390/ma6041420 - 02 Apr 2013
Cited by 105 | Viewed by 6965
Abstract
2-(1-methyl-4-((E)-(2-methylbenzylidene)amino)-2-phenyl-1H-pyrazol-3(2H)-ylidene)-hydrazineecarbothioamide (HCB) was synthesized as a corrosion inhibitor from the reaction of 4-aminoantipyrine, thiosemicarbazide and 2-methylbenzaldehyde. The corrosion inhibitory effects of HCB on mild steel in 1.0 M HCl were investigated using potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS). The results showed [...] Read more.
2-(1-methyl-4-((E)-(2-methylbenzylidene)amino)-2-phenyl-1H-pyrazol-3(2H)-ylidene)-hydrazineecarbothioamide (HCB) was synthesized as a corrosion inhibitor from the reaction of 4-aminoantipyrine, thiosemicarbazide and 2-methylbenzaldehyde. The corrosion inhibitory effects of HCB on mild steel in 1.0 M HCl were investigated using potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS). The results showed that HCB inhibited mild steel corrosion in acidic solution and inhibition efficiency increased with an increase in the concentration of the inhibitor. The inhibition efficiency was up to 96.5% at 5.0 mM. Changes in the impedance parameters suggested that HCB adsorbed on the surface of mild steel, leading to the formation of a protective film. The novel corrosion inhibitor synthesized in the present study was characterized using Fourier transform infrared spectroscopy (FTIR) and nuclear magnetic resonance (NMR) spectral data. Full article
(This article belongs to the Special Issue Corrosion Monitoring and Control)
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578 KiB  
Concept Paper
Characterisation of Crevice and Pit Solution Chemistries Using Capillary Electrophoresis with Contactless Conductivity Detector
by Mengyan Nie, Julian A. Wharton, Andy Cranny, Nick R. Harris, Robert J.K. Wood and Keith R. Stokes
Materials 2013, 6(10), 4345-4360; https://doi.org/10.3390/ma6104345 - 30 Sep 2013
Cited by 8 | Viewed by 5682
Abstract
The ability to predict structural degradation in-service is often limited by a lack of understanding of the evolving chemical species occurring within a range of different microenvironments associated with corrosion sites. Capillary electrophoresis (CE) is capable of analysing nanolitre solution volumes with widely [...] Read more.
The ability to predict structural degradation in-service is often limited by a lack of understanding of the evolving chemical species occurring within a range of different microenvironments associated with corrosion sites. Capillary electrophoresis (CE) is capable of analysing nanolitre solution volumes with widely disparate concentrations of ionic species, thereby producing accurate and reliable results for the analysis of the chemical compositions found within microenvironment corrosion solutions, such as those found at crevice and pit corrosion sites. In this study, CE with contactless conductivity detection (CCD) has been used to characterize pitting and crevice corrosion solution chemistries for the first time. By using the capillary electrophoresis with contactless conductivity detection (CE-CCD) system, direct and simultaneous detection of seven metal cations (Cu2+, Ni2+, Fe3+, Fe2+, Cr3+, Mn2+, and Al3+) and chloride anions was achieved with a buffer solution of 10 mM 2,6-pyridinedicarboxylic acid and 0.5 mM cetyltrimethylammonium hydroxide at pH 4 using a pre-column complexation method. The detection limits obtained for the metal cations and chloride anions were 100 and 10 ppb, respectively. The CE-CCD methodology has been demonstrated to be a versatile technique capable of speciation and quantifying the ionic species generated within artificial pit (a pencil electrode) and crevice corrosion geometries for carbon steels and nickel-aluminium bronze, thus allowing the evolution of the solution chemistry to be assessed with time and the identification of the key corrosion analyte targets for structural health monitoring. Full article
(This article belongs to the Special Issue Corrosion Monitoring and Control)
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