Trend and Innovations in Surface Treatments for Aluminum Alloys

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Materials Science and Engineering".

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 1802

Special Issue Editor

Department of Materials Science and Metallurgical Engineering and Inorganic Chemistry, University of Cádiz, Cádiz, Spain
Interests: aluminum alloys; corrosion; anodizing; chemical conversion coatings; electrochemistry; metal additive manufacturing; synthesis of nanomaterials using porous aluminum oxide (AAO) membranes as templates

Special Issue Information

Dear Colleagues,

Surface treatments have been traditionally applied to aluminum alloys in order to prevent corrosion phenomena, for decorative purposes, or prior to bonding or welding. Treatments such as cleaning, etching, polishing, electroplating, anodizing, chemical conversion coatings and organic coatings have been public knowledge for many decades. However, the industry of surface treatments seeks continuous improvements in terms of eco-friendlier chemical products, advanced functionalities and applications or needs for the lower cost of operation. Thus, Cr-free, plasma electrolytic oxidation, sol-gel, cold spray, laser treatments, self-healing, nanocontainers or additively manufactured alloys are among the concepts or technologies fostering the research in this multidisciplinary field.

The aim of this Special Issue of Applied Sciences is to gather original research articles which focus on recent progresses and developments in the discipline of surface treatments for aluminum alloys, both in basic science and the technologies used in the industry. All related topics are welcome, including, but not limited to, pretreatments, mechanical, chemical, electrochemical or laser treatments, paints, finishes, characterization techniques and repair processes.

Dr. Leandro González Rovira
Guest Editor

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Keywords

  • Aluminum alloys
  • Surface treatments
  • Anodizing
  • Conversion coatings
  • Sol-gel coatings
  • Paints
  • Cold spray
  • Polishing
  • Laser treatments
  • Electroplating

Published Papers (1 paper)

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Research

14 pages, 6540 KiB  
Article
Microstructural and Corrosion Properties of Burnished 6060 Aluminum Alloy
by Debora Logori, Luca Pezzato, Alessio Giorgio Settimi, Denise Hanoz and Manuele Dabalà
Appl. Sci. 2021, 11(10), 4460; https://0-doi-org.brum.beds.ac.uk/10.3390/app11104460 - 14 May 2021
Cited by 3 | Viewed by 1310
Abstract
A process for producing a black oxide coating on aluminum alloy was investigated in the present work. The blackening process is widely used in industrial applications, but it was not deeply studied for aluminum alloys. The aim of this work is to study [...] Read more.
A process for producing a black oxide coating on aluminum alloy was investigated in the present work. The blackening process is widely used in industrial applications, but it was not deeply studied for aluminum alloys. The aim of this work is to study the black coating obtained on AA6060 surfaces employing two different solutions, both containing potassium permanganate, copper nitrate and nitric acid. The first solution carried out the coloring treatment at 50 °C, whereas the second one was done at room temperature. Different immersion times were investigated. The morphology of the coating was investigated by means of optical and electron microscopy to evaluate the color of the layer and the presence of defects, porosities, and cracks. X-ray diffraction analysis was performed to evaluate the protective layer composition. The corrosion properties were studied with potentiodynamic polarization tests and electrochemical impedance spectroscopy tests. The results showed that the blackening process performed at room temperature, besides the clear advantages in term of costs and safety, obtained more uniform coatings with increased corrosion performance in comparison with the ones obtained at higher temperatures. Full article
(This article belongs to the Special Issue Trend and Innovations in Surface Treatments for Aluminum Alloys)
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