Surface Engineering and Phase Transformations in Metals and Alloys

A special issue of Surfaces (ISSN 2571-9637).

Deadline for manuscript submissions: closed (31 March 2023) | Viewed by 7694

Special Issue Editors


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Guest Editor
Center for Engineering, Modelling and Applied Social Sciences (CECS), Federal University of the ABC (UFABC), Santo André 09210-580, SP, Brazil
Interests: physical metallurgy; phase transformations; hydrogen storage; MXenes

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Guest Editor
Center for Engineering, Modelling and Applied Social Sciences (CECS), Federal University of the ABC (UFABC), Santo André 09210-580, SP, Brazil
Interests: corrosion mechanisms; localized corrosion; corrosion-fatigue; local probe techniques; surface chemistry; biomedical alloys; magnesium alloys
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Engineering, Modeling and Applied Social Sciences Center (CECS), Federal University of ABC, Avenida dos Estados 5001, Santo André 09210-580, SP, Brazil
Interests: physical metallurgy; phase transformations, high-temperature oxidation; ultrafine grained metals and alloys; titanium alloys

Special Issue Information

Dear Colleagues,

Development of metallic materials with enhanced mechanical and functional properties is a key issue to fulfill the performance requirements of modern industry. These advancements can be achieved by engineering the surfaces and microstructures of metals and alloys. The knowledge of several aspects of phase transformations and surface modifications in metallic materials, which are strongly influenced by alloys’ compositions, coating techniques, and processing routes, plays a major role in improving the performance and increasing the lifespan of metallic components. In this Special Issue on “Surface Engineering and Phase Transformations in Metals and Alloys”, research and review articles addressing the influence of microstructure and surface features in all the functional and mechanical properties are welcome. 

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

  • Tribological properties and surface engineering;
  • Coating techniques and performances;
  • Corrosion, oxidation, and diffusion barrier;
  • Biocompatible alloys;
  • Fundamental aspects of phase transformations;
  • Advanced processing techniques;
  • High-entropy alloys;
  • Advanced high-strength steels;
  • Light alloys for structural applications;
  • Hydrogen storage alloys;
  • Recycling and circular economy in metals and alloys.

Dr. Sydney F. Santos
Prof. Dr. Renato Altobelli Antunes
Dr. Anibal Mendes Filho
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. Surfaces is an international peer-reviewed open access quarterly 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 1600 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

  • phase transformations
  • metals and alloys
  • surface engineering
  • coatings
  • mechanical properties
  • functional properties
  • tribology
  • corrosion

Published Papers (2 papers)

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Research

13 pages, 3245 KiB  
Article
Nano-and Microparticles of Carbon as a Tool for Determining the Uniformity of a Diffuse Discharge Exposure
by Mikhail Lomaev, Victor Tarasenko, Mikhail Shulepov, Dmitry Beloplotov and Dmitry Sorokin
Surfaces 2023, 6(1), 40-52; https://doi.org/10.3390/surfaces6010004 - 07 Feb 2023
Cited by 2 | Viewed by 1576
Abstract
At present, a diffuse discharge plasma of air and other gases at atmospheric pressure is widely used for the surface treatment of various materials. However, in many papers it is stated that erosion damages occur on flat anodes (targets) as a result of [...] Read more.
At present, a diffuse discharge plasma of air and other gases at atmospheric pressure is widely used for the surface treatment of various materials. However, in many papers it is stated that erosion damages occur on flat anodes (targets) as a result of the discharge plasma action. The shape of these damages depends on the discharge mode. In this study, the exposure uniformity was investigated by using nano- and micro-sized carbon particles deposited on a flat copper anode (a carbon layer). The diffuse discharge was formed in a ‘point-plane’ gap with a non-uniform electric field strength distribution by applying voltage pulses with an amplitude of 18 kV. It has been established that at a gap width of 8–10 mm, an imprint of the discharge plasma on the carbon layer deposited on a copper anode has no traces of local erosion. In order for erosion to occur on the surface of the anode in the form of uniformly distributed microcraters, it is necessary to increase the current density at the anode, for example, by decreasing the gap width. When decreasing the gap width to 6 mm and less, spark channels occur. They damage both the carbon layer and the copper anode in its central part. It has been shown that there are three characteristic zones: a color-changing peripheral part of the carbon layer, a decarbonized central part of the anode, and an annular zone located between the central and peripheral parts and containing individual microcraters. Full article
(This article belongs to the Special Issue Surface Engineering and Phase Transformations in Metals and Alloys)
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18 pages, 7541 KiB  
Article
SWOT Analysis of Electrical Discharge Coatings: A Case Study of Copper Coating on Titanium Alloy
by JagadeeswaraRao Maddu, Buschaiah Karrolla, Riyaaz Uddien Shaik and Diana-Petronela Burdhuhos-Nergis
Surfaces 2022, 5(2), 290-307; https://doi.org/10.3390/surfaces5020021 - 16 May 2022
Cited by 2 | Viewed by 5191
Abstract
The electrical discharge machine (EDM) has been one of the most widely used non-traditional machines in recent decades, primarily used for machining hard materials into various complex shapes and different sizes and, nowadays, used for surface modifications/hard coatings. In this study, the SWOT [...] Read more.
The electrical discharge machine (EDM) has been one of the most widely used non-traditional machines in recent decades, primarily used for machining hard materials into various complex shapes and different sizes and, nowadays, used for surface modifications/hard coatings. In this study, the SWOT (strengths, weaknesses, opportunities and threats) of electrical discharge coating was analyzed by conducting a case study. For the purpose of the case study, copper was deposited on the titanium alloy surface (Ti6Al4V). Three electrodes of different copper alloy materials, viz., brass, bronze and copper, were selected for coating the Ti6Al4V surface. Input parameters such as current, pulse-on, pulse-off, flushing pressure and the electrode material were optimized to develop a uniform coating. Experiments were designed according to the L18 orthogonal array, and among them, the samples that showed proper coating, as seen with the naked eye, were selected for morphological and elemental analyses by scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX. Further, the output responses, viz., the material deposition rate (MDR), electrode wear rate (EWR), surface roughness (SR), elemental data (copper (Cu) and zinc (Zn)) and coating thickness (CT), were considered for the optimization of coatings. Implementing the Technique for Order Performance by Similarity to Ideal Solution, copper coating with a thickness of 20.43 µm, developed with an MDR with input parameters of 20 A current, 600 µs pulse-on, 120 µs pulse-off, 0.5 bar flushing pressure and the brass electrode, was selected as the optimum coating. The most influential parameters in this coating process were the current and pulse-on time. In this study, a SWOT table was developed to depict the strengths, weaknesses, opportunities and threats of electrical discharge coating. Full article
(This article belongs to the Special Issue Surface Engineering and Phase Transformations in Metals and Alloys)
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