Corrosion Processes of Metals: Mechanisms and Protection Methods

A special issue of Processes (ISSN 2227-9717). This special issue belongs to the section "Materials Processes".

Deadline for manuscript submissions: 30 November 2025 | Viewed by 541

Special Issue Editors


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Guest Editor
Center of Engineering Science, Universidad Autonoma de Aguascalientes, Aguascalientes 20340, Mexico
Interests: electrochemical corrosion; electrochemical noise; corrosion protection of materials; coatings

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Guest Editor
Grupo de Superficies, Electroquímica y Corrosión, GSEC, Instituto para la Investigación e Innovación en Ciencia y Tecnología de Materiales, INCITEMA, Universidad Pedagógica y Tecnológica de Colombia UPTC, Tunja 150008, Colombia
Interests: control and management of integrity in pipelines; conductive polymers; coatings; electrochemical techniques; failure analysis
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Special Issue Information

Dear Colleagues,

Corrosion of metals is one of the most important problems in different industries, such as automotive, naval, chemical, biomedical, aerospace, construction, and electronics. The amount lost for corrosion in the USA is around USD 250 billion. For that reason, it is important to understand the corrosion mechanism of different alloys and how protection methods play an important role in reducing the corrosion rate and increasing the lifetime of materials.

The correct protection method is vital to increasing materials’ performance in different environments. The environment plays an essential role in selecting protection methods, with protection methods varying from passivation, anodizing, corrosion inhibitors, cathodic protection, current methods, advanced coatings, and HVOF or plasma. The correct selection of coating equates to significant savings for different industries, so it is essential to determine if protection should be organic, inorganic, metallic, ceramic, or hybrid. Moreover, understanding the corrosion mechanism that acts in different protection methods is helpful.

This Special Issue, "Corrosion Processes of Metals: Mechanisms and Protection Methods", outlines different trends in corrosion science, electrochemicals, engineering, simulation, and technology, presenting a multidisciplinary perspective to abord the problem better. Topics related to corrosion and material protection are welcome.

Dr. Jesús Manuel Jáquez-Muñoz
Prof. Dr. Enrique Vera-López
Guest Editors

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Keywords

  • electrochemical corrosion
  • localized corrosion
  • crevice corrosion
  • galvanic corrosion
  • modeling and simulation
  • corrosion coatings
  • high-temperature corrosion
  • biomaterials corrosion
  • corrosion of light alloys
  • corrosion in concrete

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Published Papers (1 paper)

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Research

18 pages, 5193 KB  
Article
Destruction Mechanism of Laser Melted Layers of AISI 321 Austenitic Stainless Steel After Electrochemical Corrosion in Ringer’s Solution
by Tsanka Dikova and Natalina Panova
Processes 2025, 13(10), 3116; https://doi.org/10.3390/pr13103116 - 29 Sep 2025
Viewed by 250
Abstract
The aim of the present study is to investigate the mechanism behind corrosion destruction in laser-melted layers (LMLs) of AISI 321 austenitic stainless steel after electrochemical corrosion in Ringer’s solution. Surface morphology, microstructure, chemical composition, grain sizes, and orientation are studied using OM, [...] Read more.
The aim of the present study is to investigate the mechanism behind corrosion destruction in laser-melted layers (LMLs) of AISI 321 austenitic stainless steel after electrochemical corrosion in Ringer’s solution. Surface morphology, microstructure, chemical composition, grain sizes, and orientation are studied using OM, SEM, EDS, and EBSD. It was confirmed that (1) the main mechanism behind corrosion destruction is identical between untreated and laser-melted steel, i.e., the selective destruction of the lower corrosion resistance phase (δ-ferrite) in the form of pits, and (2) the morphology and size of corrosion pits are different, as determined via δ-ferrite morphology, with narrow deep pits of uneven shape observed on the surface of wrought steel and rounded shallower pits seen in LML. The following mechanism is proposed with regard to corrosion destruction in LML: (1) the initial destruction of δ-ferrite; (2) the formation of an austenitic dendrite network; (3) the mechanical fracture of austenitic dendrites and pit formation; and (4) the growth of pits inside the grain. The following relationship between corrosion pit development and dendrite orientation in the LML is observed: (1) In the melted zone, with dendrite axes perpendicular to or inclined toward the surface, the corrosion pit grows within the grain. (2) At the melted zone/base metal (MZ/BM) boundary, with dendrite axes parallel to the surface, the corrosion pit develops in the heat-affected zone, along the MZ/BM boundary. Full article
(This article belongs to the Special Issue Corrosion Processes of Metals: Mechanisms and Protection Methods)
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