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Coatings
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State-of-the-Art on Coatings Research in Italy 2021-2022
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State-of-the-Art on Coatings Research in Italy 2021-2022

A special issue of Coatings (ISSN 2079-6412).

Deadline for manuscript submissions: closed (31 December 2022) | Viewed by 9249

Special Issue Editor

Prof. Dr. Cecilia Bartuli

E-Mail Website
Guest Editor
Department of Chemical Engineering, Materials, Environment - University of Rome "La Sapienza", Via Eudossiana 18, 00185 Rome, RM, Italy
Interests: surface engineering; thermal spray deposition of protective and functional coatings; thermal barrier coatings; wear resistant cermet coatings; coatings for harsh environments; corrosion
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In recent years, in Italy,materials science has been the protagonist of a remarkable development, which can be attributed to several factors including the excellence of Italian academic and industrial research, as well as to the excellent capacity of Italian companies to turn innovation into valuable products. 

In this sense, surface treatments and advanced coatings must play an important role in achieving these objectives. So the purpose of this Special Issue is to address the recent developments in functional coatings design, synthesis and characterization, highlighting the emerging industrial applications in many industrial fields, such as medical, smart textile design, renewable energy, oil and gas, electronic and automotive industries.

This Special Issue will consist of original research and review articles. In particular, the topics of interest include, but are not limited to:

  • thin and thick films;
  • processes for coating deposition and modification;
  • characterization techniques;
  • functional, protective and decorative coatings;
  • dyes, pigments and their intermediates;
  • wear, corrosion, erosion;
  • coatings for high temperature;
  • film materials for packaging;
  • applied surface science;
  • adsorption, adhesion, functionalization;
  • fundamental and functional properties of surface and interfaces;
  • theoretical and computational modeling of surfaces and interfaces;
  • high surface area systems: colloids, nanoparticles, large interfaces.

Prof. Dr. Cecilia Bartuli
Guest Editor

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. Coatings 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 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.

Published Papers (4 papers)

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Research

18 pages, 4980 KiB  
Article
The Anti-Snow Behaviour of Icephobic Coatings: Laboratory and In-Field Testing
by Marcella Balordi, Giorgio Santucci de Magistris, Alessandro Casali, Francesco Pini, Andrea Cammi, Matteo Lacavalla and Vincenzo Rotella
Coatings 2023, 13(3), 616; https://doi.org/10.3390/coatings13030616 - 14 Mar 2023
Cited by 4 | Viewed by 1346
Abstract
Overhead power line conductors and ground wires are affected by ice and snow accretion which can easily adhere to their surface, causing the breakage of cables and the collapse of pylons due to excessive weight. In Italy, the main concern is about wet [...] Read more.
Overhead power line conductors and ground wires are affected by ice and snow accretion which can easily adhere to their surface, causing the breakage of cables and the collapse of pylons due to excessive weight. In Italy, the main concern is about wet snow: this phenomenon occurs close to zero degrees Celsius with snow density reaching up to 350 Kg/m3. Anti-icing and anti-snow coatings represent a possible strategy to mitigate ice accretion on overhead power line structures. Many works are oriented to achieve anti-icing properties, starting from superhydrophobic coatings or slippery coatings; however, there is a lack of knowledge about the anti-snow behaviour of these surfaces. In this work, aluminium alloy conductor and ground-wire samples were prepared with different coatings, which include hydrophobic, superhydrophobic and slippery surfaces prepared in the laboratory. Characterisations of sample wettability at room and low temperatures and ice adhesion strength were carried out in the laboratory. Anti-snow behaviour was studied in outdoor test facilities in the Italian Alps during several snowfall events. Furthermore, the environmental parameters were also recorded. Two figures of merit were developed to quantify anti-snow behaviour of the samples: one describing the fraction of surfaces covered by snow during the snowfall event and the other representing the maximum accretion load reached on the samples. Results of laboratory and field testing are compared and discussed. Field testing evidenced a promising snowphobic behaviour for all the samples, despite the different anti-icing and wettability properties measured in the laboratory. The mitigation of the phenomenon was found to occur mainly with two different mechanisms: the delay in snow accretion on the surface and/or the early shedding of the snow-sleeve. Full article
(This article belongs to the Special Issue State-of-the-Art on Coatings Research in Italy 2021-2022)
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13 pages, 3061 KiB  
Article
Sb2Se3 Polycrystalline Thin Films Grown on Different Window Layers
by Stefano Pasini, Donato Spoltore, Antonella Parisini, Gianluca Foti, Stefano Marchionna, Salvatore Vantaggio, Roberto Fornari and Alessio Bosio
Coatings 2023, 13(2), 338; https://doi.org/10.3390/coatings13020338 - 02 Feb 2023
Cited by 2 | Viewed by 1825
Abstract
Sb2Se3 is a typical V2VI3 binary chalcogenide compound characterized by a single crystalline phase and a fixed composition. Sb2Se3 displays a narrow energy gap ranging from 1.1 to 1.3 eV, which are quite optimal [...] Read more.
Sb2Se3 is a typical V2VI3 binary chalcogenide compound characterized by a single crystalline phase and a fixed composition. Sb2Se3 displays a narrow energy gap ranging from 1.1 to 1.3 eV, which are quite optimal values for single-junction solar cells. Earth-abundant and non-toxic components make this material a good candidate for low-cost thin-film solar cells. In substrate configuration, a world record efficiency of 9.2% was recently obtained. Sb2Se3 thin films exhibit an accentuated predisposition to form (Sb4Se6)n ribbons along the [001] direction. This anisotropy heavily influences the charge transport of the photogenerated carriers. In this work, structural characterization of the Sb2Se3 films showed that the crystalline quality and preferential orientation are strongly dependent on the window layer used. To better understand the growth mechanism, Sb2Se3 thin films were deposited by close-spaced sublimation on five different window layers, such as CdS, CdS:F, CdSe, As2S3, and ZnCdS. Sb2Se3-based solar cells, realized in superstrate configuration on these different substrates, evidently demonstrate the influence of the Sb2Se3 preferential orientation on the photovoltaic parameters. Full article
(This article belongs to the Special Issue State-of-the-Art on Coatings Research in Italy 2021-2022)
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15 pages, 4100 KiB  
Article
Plasmonic Nano Silver: An Efficient Colorimetric Sensor for the Selective Detection of Hg2+ Ions in Real Samples
by Nasir Mahmood Abbasi, Muhammad Usman Hameed, Najma Nasim, Farid Ahmed, Faizah Altaf, Shabnam Shahida, Sana Fayyaz, Syed Mubashar Sabir and Patrizia Bocchetta
Coatings 2022, 12(6), 763; https://doi.org/10.3390/coatings12060763 - 02 Jun 2022
Cited by 6 | Viewed by 1989
Abstract
Environmental pollution caused by heavy metal ions has become a major health problem across the world. In this study, a selective colorimetric sensor based on starch functionalized silver nanoparticles (St-Ag NPs) for rapid detection of Hg2+ in real samples was developed. The [...] Read more.
Environmental pollution caused by heavy metal ions has become a major health problem across the world. In this study, a selective colorimetric sensor based on starch functionalized silver nanoparticles (St-Ag NPs) for rapid detection of Hg2+ in real samples was developed. The environmentally friendly green approach was utilized to synthesize starch functionalized silver nanoparticles (St-AgNPs). A multi-technique approach involving UV-Vis absorption spectroscopy, Fourier transform infrared (FT-IR), X-ray diffraction (XRD), and scanning electron microscope (SEM) was used for the characterization of St-Ag NPs. These starch functionalized AgNPs were tested for the detection of heavy metals at 25 °C. The screening process revealed clear changes in the AgNPs color and absorption intensity only in the presence of Hg2+ due to the redox reaction between Ag0 and Hg2+. The color and absorption intensity of nanoparticles remain unchanged in the presence of all the other tested metals ion. The proposed method has strong selectivity and sensitivity to Hg2+ ions, with a detection limit of 1 ppm revealed by UV-visible spectrophotometry. The proposed procedure was found to be successful for the detection of Hg2+ in real samples of tap water. Full article
(This article belongs to the Special Issue State-of-the-Art on Coatings Research in Italy 2021-2022)
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13 pages, 10820 KiB  
Article
A Comparative Research on Corrosion Behavior of Electroplated and Magnetron Sputtered Chromium Coatings
by Stefano Mauro Martinuzzi, Lorenzo Donati, Walter Giurlani, Federico Pizzetti, Emanuele Galvanetto, Nicola Calisi, Massimo Innocenti and Stefano Caporali
Coatings 2022, 12(2), 257; https://doi.org/10.3390/coatings12020257 - 15 Feb 2022
Cited by 7 | Viewed by 2595
Abstract
Chromium deposits rank among the most widespread metal coatings for functional and decorative purposes. However, electrodeposition from Cr(VI) aqueous solution, which is the industrial process currently used to achieve thin chromium deposits, presents several environmental issues, urging the development of alternative solutions. In [...] Read more.
Chromium deposits rank among the most widespread metal coatings for functional and decorative purposes. However, electrodeposition from Cr(VI) aqueous solution, which is the industrial process currently used to achieve thin chromium deposits, presents several environmental issues, urging the development of alternative solutions. In this study, which aims to compare the functional and aesthetical properties of decorative coatings, 800 nm thick chromium layers were deposited directly onto copper substrates by means of magnetron sputtering (MS) and direct current electrodeposition (ED). The obtained coatings were characterized regarding their thickness, morphology, color index, chemical composition, and corrosion resistance viewpoints. With respect to the electroplated samples, which constitute the benchmark, the magnetron sputtered ones appeared to be darker but showed a pleasing reflective appearance and superior thickness homogeneity, as well as the absence of voids and macrocracks, as evidenced by scanning electron microscopy (SEM) investigation. Regarding the anticorrosion performances of the chromium layers, electrochemical and standard salt spray test (NSS test) were carried out at room temperature in 3.5% NaCl solution, and evidenced similar, if not better, results for the magnetron sputtered coatings. On the whole, the data displayed here demonstrates the suitability of magnetron sputtering technology for use as an industrially feasible finishing technology for both aesthetic and mild-condition anticorrosion purposes. Full article
(This article belongs to the Special Issue State-of-the-Art on Coatings Research in Italy 2021-2022)
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