Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
5.2
3.4
Journals
Materials
Special Issues
Recent Progress in Corrosion Protection and Electrochemical Characterization of New...
materials-logo
Submit to Special Issue Submit Abstract to Special Issue Review for Materials Propose a Special Issue

Journal Menu

► Journal Menu

Journal Browser

► Journal Browser
share announcement

Recent Progress in Corrosion Protection and Electrochemical Characterization of New and Advanced Materials

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Corrosion".

Deadline for manuscript submissions: 10 June 2024 | Viewed by 4719

Special Issue Editor

Dr. Raul Figueroa

E-Mail Website
Guest Editor
Department of Materials Engineering, Applied Mechanics and Construction, University of Vigo, Vigo, Spain
Interests: material characterization; microstructure; coatings; sol-gel; surface engineering; tribology; wear testing; corrosion; electrochemical impedance; electrodeposition
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Understanding the electrochemical properties of materials is of special importance to carry out an adequate selection, handling, and improve their service life.

In the continuous development of new materials, together with new manufacturing techniques, it is necessary that we continuously characterize their properties. However, electrochemical characterization is second in line to mechanical characterization. For this reason, the possible applications of new materials in different fields of engineering are conditioned by the absence of their electrochemical properties.

Understanding electrochemical processes and the application of coatings allows us to reduce significant economic losses, reduce the consumption of raw materials, as well as avoid the unnecessary risks associated with failures. In the same way, new developments in engineering require materials with very specific electrochemical properties, such as catalytic processes or the production and storage of energy, which must be more efficient to reduce their cost.

For all these reasons, this Special Issue aims to compile works related to new advances in the electrochemical characterization of materials, the study of corrosion and its protection, as well as new applications or developments in this field.

The topics of interest include, but are not limited to, the following:

  • Electrochemical characterization of materials; 
  • Corrosion kinetics and passivity;
  • Mechanisms and methods of corrosion control;
  • Corrosion inhibitors;
  • Cathodic protection;
  • Protective coatings;
  • Surface pretreatments.

Dr. Raul Figueroa
Guest Editor

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. Materials 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 protection
  • coating
  • electrochemical behavior
  • corrosion inhibitors
  • passivation
  • EIS

Published Papers (5 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

29 pages, 8058 KiB  
Article
MgO/KH2PO4 and Curing Moisture Content in MKPC Matrices to Optimize the Immobilization of Pure Al and Al-Mg Alloys
by Carla Fernández-García, María Cruz Alonso, José María Bastidas, Inés García-Lodeiro and Raúl Fernández
Materials 2024, 17(6), 1263; https://doi.org/10.3390/ma17061263 - 08 Mar 2024
Viewed by 397
Abstract
Magnesium Potassium Phosphate Cements (MKPCs) are considered a good alternative for the immobilization of aluminium radioactive waste. MKPC composition and moisture curing conditions are relevant issues to be evaluated. The corrosion of pure aluminium (A1050) and AlMg alloys (AA5754) with 3.5% of Mg [...] Read more.
Magnesium Potassium Phosphate Cements (MKPCs) are considered a good alternative for the immobilization of aluminium radioactive waste. MKPC composition and moisture curing conditions are relevant issues to be evaluated. The corrosion of pure aluminium (A1050) and AlMg alloys (AA5754) with 3.5% of Mg is studied in MKPC systems prepared with different MgO/KH2PO4 (M/P) molar ratios (1, 2, and 3M) and moisture curing conditions (100% Relative Humidity (RH) and isolated in plastic containers (endogenous curing)). The Al corrosion potential (Ecorr) and corrosion kinetic (icorr and Vcorr) are evaluated over 90 days. Additionally, the pore ion evolution, the matrix electrical resistance, the pore structure, and compressive strength are analysed. The corrosion process of Al alloy is affected by the pH and ion content in the pore solution. The pore pH increases from near neutral for the 1M M/P ratio to 9 and 10 for the 2 and 3M M/P ratio, increasing in the same way the corrosion of pure Al (AA1050) and AlMg alloys (AA5754). The effect of Mg content in the alloy (AA5754) becomes more relevant with the increase in the M/P ratio. The presence of phosphate ions in the pore solution inhibits the corrosion process in both Al alloys. The MKPC physicochemical stability improved with the increase in the M/P ratio, higher mechanical strength, and more refined pore structure. Full article
(This article belongs to the Special Issue Recent Progress in Corrosion Protection and Electrochemical Characterization of New and Advanced Materials)
►▼ Show Figures

Figure 1

14 pages, 8347 KiB  
Article
Wire Electrochemical Etching of Superhydrophobic Nickel Surfaces with Enhanced Corrosion Protection
by Binghan Wu, Defeng Yan, Junyi Lin and Jinlong Song
Materials 2023, 16(23), 7472; https://doi.org/10.3390/ma16237472 - 01 Dec 2023
Viewed by 671
Abstract
Superhydrophobic nickel surfaces have significant advantages in the field of corrosion protection compared with traditional nickel corrosion protection methods which need a toxic chemical corrosion inhibitor. Electrochemical etching, an ideal method for fabricating superhydrophobic nickel surfaces, was also limited by low current density, [...] Read more.
Superhydrophobic nickel surfaces have significant advantages in the field of corrosion protection compared with traditional nickel corrosion protection methods which need a toxic chemical corrosion inhibitor. Electrochemical etching, an ideal method for fabricating superhydrophobic nickel surfaces, was also limited by low current density, resulting in low processing efficiency. To overcome this limitation, we proposed a new method to fabricate a superhydrophobic nickel surface using a wire electrochemical etching method. The wire electrochemical etching method accomplished the etching process by sweeping a controlled wire cathode across the surface of the anode nickel plate in an environmentally friendly neutral electrolyte, NaCl. The superhydrophobic nickel sample with a contact angle of 153° and a rolling angle of 10° could be fabricated by wire electrochemical etching and modification. Additionally, the optimal parameters of the wire electrochemical etching and the principle of superhydrophobic surface formation had also been systematically investigated, respectively. Moreover, the superhydrophobic nickel surface had self-cleaning performance, antifouling performance, corrosion protection, and abrasion resistance. Wire electrochemical etching improves the current density of processing, which means that this method improves the processing efficiency for fabricating a superhydrophobic nickel surface. This work is expected to enrich the theory and technology for fabricating superhydrophobic nickel surfaces to improve the corrosion protection of nickel. Full article
(This article belongs to the Special Issue Recent Progress in Corrosion Protection and Electrochemical Characterization of New and Advanced Materials)
►▼ Show Figures

Figure 1

19 pages, 23021 KiB  
Article
Effect of Surface Activation on the Microstructure and Corrosion Resistance of MAO/Ni-P Composite Coating on AZ91D Magnesium Alloy
by Qi Xu, Peng Zhou, Tao Zhang and Fuhui Wang
Materials 2023, 16(18), 6185; https://doi.org/10.3390/ma16186185 - 13 Sep 2023
Viewed by 974
Abstract
The purpose of this study is to improve the number and distribution of active particles on the MAO layer by changing the activation method, thus improving the corrosion resistance of the coating. The structure of the coatings was characterized by SEM, XRD, XPS, [...] Read more.
The purpose of this study is to improve the number and distribution of active particles on the MAO layer by changing the activation method, thus improving the corrosion resistance of the coating. The structure of the coatings was characterized by SEM, XRD, XPS, and AFM, as well as the corrosion resistance of the coatings by polarization curves, EIS tests, immersion tests, and salt spray tests. The conductive resistance and adhesion of different composite coatings were compared. The results demonstrate that the properties of the composite coating are significantly affected by different activation methods, and the Ni-P coating prepared with more active particles offers superior corrosion protection to the inner layer. The quantity and distribution of active particles affect the compactness of the coating by influencing the initial deposition process. The size of nickel particles is larger and the inter-grain porosity increases in the case of fewer active sites, and as the number of active sites increases, the size of nickel particles decreases, and the coating compactness increases. The mechanism of the effect of the number of active particles on the deposition process of electroless Ni-P coating was proposed. Full article
(This article belongs to the Special Issue Recent Progress in Corrosion Protection and Electrochemical Characterization of New and Advanced Materials)
►▼ Show Figures

Figure 1

25 pages, 7191 KiB  
Article
Electrochemical Behavior of Al/Mg Alloys Immobilized in a Magnesium Potassium Phosphate Cement-Based Mortar
by Gabriel Poras, Céline Cau Dit Coumes, Pascal Antonucci, Céline Cannes, Sylvie Delpech and Stéphane Perrin
Materials 2023, 16(15), 5415; https://doi.org/10.3390/ma16155415 - 02 Aug 2023
Cited by 2 | Viewed by 1000
Abstract
Portland cement is extensively used for the conditioning of radioactive waste. However, its high alkalinity is a serious obstacle to the stabilization of waste containing aluminum metal since aluminum is oxidized by the pore solution with the production of dihydrogen. This work investigates [...] Read more.
Portland cement is extensively used for the conditioning of radioactive waste. However, its high alkalinity is a serious obstacle to the stabilization of waste containing aluminum metal since aluminum is oxidized by the pore solution with the production of dihydrogen. This work investigates the potential of an alternative binder, magnesium potassium phosphate (MKP) cement, for the stabilization of Al–Mg alloys comprising 2 to 4.5 wt% of Mg and other metallic impurities. The objective is to assess the influence of the alloy composition on its reactivity in the cementitious matrix at earlier ages, as well as at later ages, when the cement has reached a significant reaction degree. Two complementary techniques are used. Gas chromatography shows that the dihydrogen release, resulting from the corrosion process, is not influenced by the magnesium content in the alloy. Electrochemical impedance spectroscopy provides qualitative information about the corrosion but also makes it possible to assess the corrosion current using an equivalent electrical circuit linked to the kinetic parameters of the postulated corrosion mechanism. Over a one-year period, the corrosion current of the alloys, regardless of their Mg content, is reduced by almost three orders of magnitude in MKP mortar as compared to Portland-cement-based mortar. Full article
(This article belongs to the Special Issue Recent Progress in Corrosion Protection and Electrochemical Characterization of New and Advanced Materials)
►▼ Show Figures

Figure 1

13 pages, 3851 KiB  
Article
Time-Lapse Observation of Crevice Corrosion in Grade 2205 Duplex Stainless Steel
by So Aoki and Dirk L. Engelberg
Materials 2023, 16(15), 5300; https://doi.org/10.3390/ma16155300 - 27 Jul 2023
Cited by 3 | Viewed by 1116
Abstract
The objective of this study was to investigate and visualize the initiation and propagation of crevice corrosion in grade 2205 duplex stainless steel by means of time-lapse imaging. Transparent Poly-Methyl-Meth-Acrylate washer and disk were coupled with duplex stainless steel to create an artificial [...] Read more.
The objective of this study was to investigate and visualize the initiation and propagation of crevice corrosion in grade 2205 duplex stainless steel by means of time-lapse imaging. Transparent Poly-Methyl-Meth-Acrylate washer and disk were coupled with duplex stainless steel to create an artificial crevice, with electrochemical monitoring applied to obtain information about the nucleation and propagation characteristics. All nucleation sites and corroding areas inside crevices were recorded in situ using a digital microscope set-up. Localized corrosion initiated close to the edge of the washer, where the crevice gap was very tight, with active corrosion sites then propagating underneath the disk into areas with wider gaps, towards the crevice mouth. The growth was associated with a rise in anodic current interlaced with sudden current drops, with parallel hydrogen gas evolution also observed within the crevice. The current drops were associated with a sudden change in growth direction, and once corrosion reached the crevice mouth, the propagation continued circumferentially and in depth. This allowed different corrosion regions to develop, showing selective dissolution of austenite, a region with dissolution of both phases, followed by a region where only ferrite dissolved. The effect of applied electrochemical potential, combined with time-lapse imaging, provides a powerful tool for in situ corrosion studies. Full article
(This article belongs to the Special Issue Recent Progress in Corrosion Protection and Electrochemical Characterization of New and Advanced Materials)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-5
Back to TopTop