Surface Treatments and Coating of Metallic Materials

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Corrosion and Protection".

Deadline for manuscript submissions: 30 November 2025 | Viewed by 502

Special Issue Editor

Special Issue Information

Dear Colleagues,

Surface treatments and coating technologies are of extremely high interest in the metallurgical sector because they permit the functionalization of the metal surface, thus modifying the part of the metal that interacts with the environment and permitting the obtaining of particular properties that cannot be obtained with only the bulk material. The properties that can be modified with surface treatments are of a very wide range; the most common treatments are performed in order to improve the wear and corrosion properties of the metals, but treatments are also often performed in order to give some particular functionality to the metal surfaces. Classification of the surface treatments is generally performed on the basis of the thickness of the coating (thick or thin coating) or on the basis of the type of deposition (deposition from the liquid, solid, or vapor phase). The type of coating generally depends both on the type of application of the final product and on the composition of the metallic substrate.

The purpose of this Special Issue is to publish studies that deal with the surface treatments of metallic materials. These may include, but are not limited to, the following:

-Coatings deposited from the vapor phase (PVD, CVD, and PA-CVD);

-Coatings deposited from the liquid phase: anodizing, plasma electrolytic oxidation, other conversion treatments, electroplating of metallic coatings, hot-dip galvanizing, or electroless deposition;

-Coatings deposited from the solid phase: thermal spray coating, laser cladding, or welded coatings; <>I invite you to submit both original contributions and review works on these topics, with papers that deal both with the production method and with the characterization of the coatings produced on the different metal substrates.

Dr. Luca Pezzato
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

  • coatings
  • surface treatments
  • corrosion resistance
  • wear resistance
  • PVD
  • CVD
  • PEO
  • anodizing
  • electroplating
  • hot-dip galvanizing
  • thermal spray
  • laser cladding

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Published Papers (1 paper)

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Research

14 pages, 3669 KB  
Article
Facile Approach for Fabrication of Hydrophobic Aluminum Alloy Surfaces Using Fatty Acids
by Alina Matei, Oana Brincoveanu and Vasilica Ţucureanu
Metals 2025, 15(8), 884; https://doi.org/10.3390/met15080884 - 7 Aug 2025
Viewed by 298
Abstract
Alloys and metals exhibit high sensitivity to corrosion and aggressive environments. Hence, the development of protective treatments through accessible methods with a high degree of protection has become a necessity. This paper presents a method for treating the hydrophilic surface of aluminum alloys [...] Read more.
Alloys and metals exhibit high sensitivity to corrosion and aggressive environments. Hence, the development of protective treatments through accessible methods with a high degree of protection has become a necessity. This paper presents a method for treating the hydrophilic surface of aluminum alloys using two types of unsaturated fatty acids, thereby increasing the degree of hydrophobicity and protecting the material. The samples were cleaned by a chemical process, followed by immersion in oleic acid (C18H34O2, 18:1 cis-9) and elaidic acid (C18H34O2, 18:1 trans-9), and they were then treated at a temperature of 80 °C. Morphological and microstructural analyses were conducted using OM, FE-SEM, EDX, and FTIR to understand the influence of unsaturated monocarboxylic fatty acids on the alloy surfaces. The wettability capacity of the alloys was investigated by measuring the contact angle (CA). The results revealed that the cleaning step and modification treatment with fatty acids are essential steps for increasing the hydrophobic character of the surface. This study can be applied to various types of metallic substrates to enhance their corrosion resistance and long-term chemical stability in aggressive environments, making it adaptable for use in different industrial fields. Full article
(This article belongs to the Special Issue Surface Treatments and Coating of Metallic Materials)
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