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Crystals
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Electrocrystallization of Metallic Alloys and Composites
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Electrocrystallization of Metallic Alloys and Composites

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Inorganic Crystalline Materials".

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 7916

Special Issue Editors

Dr. Dmitry Kharitonov

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Guest Editor
Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8 Street, 30-239 Kraków, Poland
Interests: surface treatment; electrochemistry; electrodeposition; corrosion; antibacterial surfaces
Special Issues, Collections and Topics in MDPI journals
Dr. Robert Socha

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Guest Editor
Jerzy Haber Institute of Catalysis and Surface Chemistry Polish Academy of Sciences
Interests: surface engineering; surface chemistry; non-stationary processes; solar cells
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Jacek Ryl

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Guest Editor
Institute of Nanotechnology and Materials Engineering, Faculty of Applied Physics and Mathematics, Gdansk University of Technology, 80-233 Gdansk, Poland
Interests: applied electrochemistry; electrochemical (bio)sensors; waste-water treatment; corrosion science; surface engineering; surface chemistry; multisine impedance monitoring; nonstationary processes
Special Issues, Collections and Topics in MDPI journals
Dr. Irina Kurilo

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Guest Editor
Department of Physical, Colloid and Analytical Chemistry, Belarusian State Technological University, Minsk, Belarus
Interests: applied electrochemistry; corrosion control; surface engineering; electrochemical recovery of metals; electrochemical kinetics; antibacterial surfaces

Special Issue Information

Dear Colleagues,

Recently, the development of advanced functional materials with controllable morphology, crystal size, and exceptional functional properties has attracted a huge amount of interest in the scientific world. Undoubtedly, electrocrystallization is one of the most versatile methods of their creation. By varying the composition of the plating bath, current parameters, and agitation mode, it is possible to obtain metallic materials with a unique crystal structure, physical and chemical properties, which can be used in the medical, automotive, and electronics industries. Electrodeposition is also frequently used in the creation of composite coatings, containing various nanoparticles as a second phase. Multiphase structure of the formed alloys and composites underlines the importance of the evaluation of their corrosion behavior in common technological and biological fluids. Therefore, a thorough knowledge of the relationship between the process parameters and the resulting properties profile is necessary.

This issue covers the broad aspects of the electrodeposition process of metallic alloys and composites and investigation of their functional properties. The main topics are:

  • Electrodeposition of metal alloys;
  • Electrodeposition of metal-based composites;
  • Mechanisms of electrocrystallization and nucleation;
  • Microstructure characterization by advanced techniques;
  • Physical–chemical properties of electrodeposited alloys and composites;
  • Corrosion behavior of electrodeposited alloys and composites;
  • Other aspects of electrodeposition of metals and alloys.

Dr. Dmitry Kharitonov
Dr. Robert Socha
Prof. Dr. Jacek Ryl
Dr. Irina Kurilo
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. Crystals is an international peer-reviewed open access monthly 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 2100 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

  • Metal alloys and composites
  • Electrochemistry
  • Corrosion
  • Electrodeposition kinetics
  • Surface treatment
  • Nucleation and crystal growth

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Further information on MDPI's Special Issue polices can be found here.

Published Papers (3 papers)

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Research

17 pages, 4914 KiB  
Article
Photoconduction of Polar and Nonpolar Cuts of Undoped Sr0.61Ba0.39Nb2O6 Single Crystals
by Elke Beyreuther, Julius Ratzenberger, Matthias Roeper, Benjamin Kirbus, Michael Rüsing, Liudmila I. Ivleva and Lukas M. Eng
Crystals 2021, 11(7), 780; https://doi.org/10.3390/cryst11070780 - 3 Jul 2021
Cited by 1 | Viewed by 2179
Abstract
In the last two decades, variably doped strontium barium niobate (SBN) has attracted a lot of scientific interest mainly due to its specific non-linear optical response. Comparably, the parental compound, i.e., undoped SBN, appears to be less studied so far. Here, two different [...] Read more.
In the last two decades, variably doped strontium barium niobate (SBN) has attracted a lot of scientific interest mainly due to its specific non-linear optical response. Comparably, the parental compound, i.e., undoped SBN, appears to be less studied so far. Here, two different cuts of single-crystalline nominally pure strontium barium niobate in the composition Sr0.61Ba0.39Nb2O6 (SBN61) are comprehensively studied and analyzed with regard to their photoconductive responses. We present conductance measurements under systematically varied illumination conditions along either the polar z-axis or perpendicular to it (x-cut). Apart from a pronounced photoconductance (PC) already under daylight and a large effect upon super-bandgap illumination in general, we observe (i) distinct spectral features when sweeping the excitation wavelength over the sub-bandgap region as then discussed in the context of deep and shallow trap states, (ii) extremely slow long-term relaxation for both light-on and light-off transients in the range of hours and days, (iii) a critical dependence of the photoresponse on the pre-illumination history of the sample, and (iv) a current–voltage hysteresis depending on both the illumination and the electrical-measurement conditions in a complex manner. Full article
(This article belongs to the Special Issue Electrocrystallization of Metallic Alloys and Composites)
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7 pages, 2982 KiB  
Article
Electrodeposition of Graphene Oxide Modified Composite Coatings Based on Nickel-Chromium Alloy
by Vitaly Tseluikin, Asel Dzhumieva, Andrey Yakovlev, Anton Mostovoy and Marina Lopukhova
Crystals 2021, 11(4), 415; https://doi.org/10.3390/cryst11040415 - 13 Apr 2021
Cited by 6 | Viewed by 2637
Abstract
Composite electrochemical coatings (CECs) based on nickel-chromium alloy and modified with multilayer graphene oxide (GO) were obtained. The electrodeposition process of these coatings was studied in the potentiodynamic mode. The structure and the composition of nickel–chromium–GO CECs were studied by scanning electron microscopy [...] Read more.
Composite electrochemical coatings (CECs) based on nickel-chromium alloy and modified with multilayer graphene oxide (GO) were obtained. The electrodeposition process of these coatings was studied in the potentiodynamic mode. The structure and the composition of nickel–chromium–GO CECs were studied by scanning electron microscopy and laser microspectral analysis. Nickel–chromium–GO CECs are dense and uniform. The carbon content in them increases when moving from the substrate to the surface. It was established that the addition of GO particles into the composition of electrolytic coatings with a nickel-chromium alloy results in the increase in their microhardness from 4423–5480 MPa to 6120–7320 MPa depending on the cathodic current density. Full article
(This article belongs to the Special Issue Electrocrystallization of Metallic Alloys and Composites)
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23 pages, 13059 KiB  
Article
A Probabilistic Method for Estimating the Influence of Corrosion on the CuAlNi Shape Memory Alloy in Different Marine Environments
by Špiro Ivošević, Nataša Kovač, Gyöngyi Vastag, Peter Majerič and Rebeka Rudolf
Crystals 2021, 11(3), 274; https://doi.org/10.3390/cryst11030274 - 10 Mar 2021
Cited by 12 | Viewed by 2027
Abstract
This paper gives an approach to the probabilistic percent corrosion depth estimation model for the CuAlNi Shape Memory Alloy (SMA) in different marine environments. Real testing was performed for validation of the theoretical model, where CuAlNi SMAs were exposed to 6 and 12 [...] Read more.
This paper gives an approach to the probabilistic percent corrosion depth estimation model for the CuAlNi Shape Memory Alloy (SMA) in different marine environments. Real testing was performed for validation of the theoretical model, where CuAlNi SMAs were exposed to 6 and 12 months in different seawater environments. Focus Ion Beam (FIB) analysis was used to measure the real corrosion depth on the surfaces of tested samples. A statistical approach to the investigation of the corrosion rate of CuAlNi SMA is given, where the corrosion rate is observed as a continuous random variable described by a linear corrosion model, with the assumption that corrosion starts immediately upon alloy surfaces being exposed to the influences of the marine environment. The three best-fitted two-parameter distributions for estimating the cumulative density function and the probability density function of the random variable were obtained by applying adequate statistical tests. Furthermore, using EDX analyses, we identified the chemical composition of the corroded materials, and with the help of Principal Component Analyses, we determined which corrosion environment had the most dominant influence on the corrosion process. The research results indicated that the changeable environment in the tides had a more heterogenic chemical content, which accelerated the corrosion rate. Full article
(This article belongs to the Special Issue Electrocrystallization of Metallic Alloys and Composites)
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