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Sensors for Corrosion Monitoring
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Sensors for Corrosion Monitoring

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Chemical Sensors".

Deadline for manuscript submissions: closed (31 January 2021) | Viewed by 12164

Special Issue Editors

Dr. Tadeja Kosec

E-Mail Website
Guest Editor
Laboratory for metals, corrosion and anticorrosion protection, Slovenian National Building and Civil Engineering Institute, Dimičeva 12, SI-1000 Ljubljana, Slovenia
Interests: electrochemistry; corrosion; characterization of passive films; Raman spectroscopy; copper
Prof. Dr. Andraž Legat

E-Mail Website1 Website2
Guest Editor
Slovenian National Building and Civil Engineering Institute, Dimičeva 12, SI-1000 Ljubljana, Slovenia
Interests: durability of materials and structures; corrosion processes; electrochemical methods; sensors and monitoring techniques; sustainability
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The scope of this Special Issue “Sensors for Corrosion Monitoring” of Sensors is the research and the development of various sensors for corrosion monitoring.

The present Special Issue focuses on the development of various sensors to monitor the decay process of metals using different engineering approaches to monitor the state of a metal in different environments. By using sensors and by monitoring the corrosion, the durability in various demanding applications can be predicted and the lifetime of an object/structure prolonged.

It is highly recommended to present your research using various physical, electrochemical, and other approaches for monitoring corrosion processes. Various fields of applications of sensors for corrosion monitoring are welcome such as the monitoring of steel corrosion in concrete, corrosion in extreme environments, monitoring bronze and steel corrosion by atmospheric exposure, and other possible fields of application.

The study and development of different sensors are envisioned, ie., electrical resistance sensors, acoustic emission sensors, weight loss coupons, coupled multi-electrode arrays, optical cables, new methods such as diagnosis tool by digital image correlation, etc.

Submitted papers should provide comprehensive insight on corrosion monitoring by physical and electrochemical monitoring extended with the characterization of corrosion products and the evaluation of the performance for different applications.

Dr. Tadeja Kosec
Prof. Dr. Andraž Legat
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Sensors is an international peer-reviewed open access semimonthly journal published by MDPI.

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 monitoring
  • Sensors
  • Contact and contactless monitoring
  • Concrete
  • Piping
  • Extreme environment

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Published Papers (3 papers)

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Research

21 pages, 4903 KiB  
Article
Stainless Steel Voltammetric Sensor to Monitor Variations in Oxygen and Humidity Availability in Reinforcement Concrete Structures
by Ana Martínez-Ibernón, Josep Lliso-Ferrando, José M. Gandía-Romero and Juan Soto
Sensors 2021, 21(8), 2851; https://doi.org/10.3390/s21082851 - 18 Apr 2021
Cited by 7 | Viewed by 2192
Abstract
The present work presents the results obtained with a stainless steel (SS) voltammetric sensor to detect variations in humidity (H2O) and oxygen (O2) availability in concretes. First, studies in solution were run by preparing several solutions to represent the [...] Read more.
The present work presents the results obtained with a stainless steel (SS) voltammetric sensor to detect variations in humidity (H2O) and oxygen (O2) availability in concretes. First, studies in solution were run by preparing several solutions to represent the different conditions that can be found in concrete pores. Second, the sensor’s response was studied by varying O2 availability by argon or synthetic air bubbling. Then concrete conditions with different degrees of carbonation were simulated using solutions with a pH between 13 and 8.45. After characterization in solution, a study by means of concrete samples with several water/cement ratios (0.6, 0.5 and 0.4) was performed, in which sensors were embedded and studied under different O2 and H2O saturation conditions. The obtained results revealed that with the voltagram, it is possible to evaluate O2 availability variation from the slopes of the lines identified logarithmically in the voltagram for the obtained cathodic sweeping. All the results obtained with the sensor were correlated/validated by standard assays to characterize porosity in hardened concretes. Full article
(This article belongs to the Special Issue Sensors for Corrosion Monitoring)
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17 pages, 5232 KiB  
Article
Sensor Development for Corrosion Monitoring of Stainless Steels in H2SO4 Solutions
by Miha Hren, Tadeja Kosec, Mari Lindgren, Elina Huttunen-Saarivirta and Andraž Legat
Sensors 2021, 21(4), 1449; https://doi.org/10.3390/s21041449 - 19 Feb 2021
Cited by 3 | Viewed by 3226
Abstract
Equipment made of different stainless steels is often used in the hydrometallurgical processing industry. In this study, an electrical resistance sensor was developed for monitoring corrosion in acidic solutions at high temperature. Two types of stainless steel were used as the electrode materials, [...] Read more.
Equipment made of different stainless steels is often used in the hydrometallurgical processing industry. In this study, an electrical resistance sensor was developed for monitoring corrosion in acidic solutions at high temperature. Two types of stainless steel were used as the electrode materials, namely grade 316L stainless steel (EN 1.4404) and grade 2507 duplex stainless steel (EN 1.4410). The materials and sensors were exposed to a 10% H2SO4 solution containing 5000 mg/L of NaCl at various temperatures. Results from the sensors were verified using electrochemical techniques and postexposure examination. Results showed that the microstructure played an important role in the interpretation of corrosion rates, highlighting the importance of using an appropriate stainless steel for the production of sensors. Electrochemical tests and postexposure examination both showed that the grade 2507 had a significantly lower corrosion rate compared to the grade 316L. Under industrial‑process conditions, the results for the grade 2507 sensor were promising with respect to sensor durability and performance, despite the extremely harsh operating environment. Full article
(This article belongs to the Special Issue Sensors for Corrosion Monitoring)
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Graphical abstract

14 pages, 3442 KiB  
Article
Application of Ag/AgCl Sensor for Chloride Monitoring of Mortar under Dry-Wet Cycles
by Yupeng Tian, Peng Zhang, Kaiyue Zhao, Zhenxing Du and Tiejun Zhao
Sensors 2020, 20(5), 1394; https://doi.org/10.3390/s20051394 - 4 Mar 2020
Cited by 48 | Viewed by 5909
Abstract
An Ag/AgCl electrode used as a corrosion sensor in a reinforced concrete structure is considered as having good application prospect. However, its performance under complex conditions, such as dry-wet cycle condition, is not affirmed. In the current study, the performance of Ag/AgCl as [...] Read more.
An Ag/AgCl electrode used as a corrosion sensor in a reinforced concrete structure is considered as having good application prospect. However, its performance under complex conditions, such as dry-wet cycle condition, is not affirmed. In the current study, the performance of Ag/AgCl as chloride selective electrode in mortar exposed to dry-wet cycle condition was investigated. A simple Ag/AgCl electrode was prepared and fabricated by electrochemical anodization. These Ag/AgCl electrodes were embedded into a mortar specimen with temperature sensors, humidity sensors and anode ladder monitoring system (ALS). After 28 d curing time, the upper surface of mortar specimen was wetted (with 5% NaCl solution) and dried regularly. The obtained results indicate that Ag/AgCl electrode responds to the ingress of chloride ion, sensitively. The chloride ion concentration variation can be reflected by the potential trend. Furthermore, the balance potential of Ag/AgCl electrodes is influenced by dry-wet cycles. Compared with ALS, it demonstrates that Ag/AgCl electrodes are more sensitive to chloride. The research provides the key element for the specific application of Ag/AgCl electrode for corrosion monitoring in the future. Full article
(This article belongs to the Special Issue Sensors for Corrosion Monitoring)
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