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Coatings
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Advanced Ceramic Coatings and Interfaces
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Advanced Ceramic Coatings and Interfaces

A special issue of Coatings (ISSN 2079-6412). This special issue belongs to the section "Ceramic Coatings and Engineering Technology".

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 22548

Special Issue Editors

Prof. Dr. Sylvester Abanteriba

E-Mail Website
Guest Editor
School of Aerospace, Mechanical and Manufacturing Engineering, RMIT University, Melbourne, Australia
Interests: propulsion systems; tribology; biomechanics; alternative fuels; coatings
Special Issues, Collections and Topics in MDPI journals
Dr. Subir Ghosh

E-Mail Website
Guest Editor
School of Aerospace, Mechanical and Manufacturing Engineering, RMIT University, Melbourne, Australia
Interests: biotribology; artificial joints; biomaterials; surface coating; surface modification
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

We welcome contributions to the Special Issue on Advanced Ceramic Coatings and Interfaces for the journal, Coatings (ISSN 2079-6412). Contributions should cover general aspects of this topic, for example, coatings production concepts and latest methods of application resulting in component life extension. Modelling of coating failure mechanisms, efficacy of protection and coatings and and coatings' integrity; integrity would also be appreciated, as well as the evaluation of mechanical and thermal properties of coating materials. In summary, we envisage the papers will cover both practical activity and theoretical modelling.

All manuscripts will be peer reviewed and those accepted will be published immediately online in an ongoing fashion in this Special Issue.

Prof. Dr. Sylvester Abanteriba
Dr. Subir Ghosh
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. 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.

Keywords

  • Surface coating

  • Biotribology

  • Surface modification

  • Thermal barrier coatings

  • Ceramic coatings

  • Interfaces

Published Papers (5 papers)

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Research

11 pages, 3491 KiB  
Article
Synergistic Improvement in Coating with UV Aging Resistance and Anti-Corrosion via La-Doped CeO2 Powders
by Ang Tian, Tengda Ma, Xiaoguo Shi, Dixiang Wang, Wenyuan Wu, Chuangwei Liu and Wenli Pei
Coatings 2021, 11(9), 1095; https://doi.org/10.3390/coatings11091095 - 11 Sep 2021
Cited by 4 | Viewed by 2044
Abstract
Benefitting from a suitable band gap, ceria is an excellent material for UV shielding. By solid solution doping and specific micromorphology, its band gap can be effectively controlled. In this paper, ceria doped with lanthanum via oxalate precipitation is combined with a high-temperature [...] Read more.
Benefitting from a suitable band gap, ceria is an excellent material for UV shielding. By solid solution doping and specific micromorphology, its band gap can be effectively controlled. In this paper, ceria doped with lanthanum via oxalate precipitation is combined with a high-temperature roasting process. The properties of the prepared samples are characterized by UV–Vis diffuse reflectance spectroscopy (DRS), Raman, XRD, FESEM and XPS. The absorption threshold of materials is clearly red-shifted in the ultraviolet band, which originates from the electron-phonon generation. To further reveal the mechanism, the density function theory calculation (DFT) is implemented to study the influence of lanthanum concentrations on ceria’s band gap. It is demonstrated that the band gap can even be narrowed to 2.97 eV by optimizing the sintering temperature and lanthanum-doped concentration. To investigate its improved anti-aging properties under ultraviolet rays, different amounts of 5% lanthanum-doped ceria is mixed with an Al-based coating and then coated on the Q235 steel. Combined with an ultraviolet light irradiation experiment and electrochemical test technology, the corrosion resistance of the modified coatings is evaluated. The coating with 20% La-doped ceria provides the best corrosion resistance performance. Full article
(This article belongs to the Special Issue Advanced Ceramic Coatings and Interfaces)
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11 pages, 5621 KiB  
Article
Effect of Particle In-Flight Behavior on the Microstructure and Fracture Toughness of YSZ TBCs Prepared by Plasma Spraying
by Yanqiu Xiao, Erzhou Ren, Mingyang Hu and Kun Liu
Coatings 2018, 8(9), 309; https://doi.org/10.3390/coatings8090309 - 04 Sep 2018
Cited by 12 | Viewed by 4001
Abstract
The present study aims to elaborate particle in-flight behavior during plasma spraying and its significance in determining the microstructure and mechanical properties of plasma sprayed yttria partially stabilized zirconia (YSZ) thermal barrier coatings (TBCs). The as-sprayed YSZ coatings were characterized in terms of [...] Read more.
The present study aims to elaborate particle in-flight behavior during plasma spraying and its significance in determining the microstructure and mechanical properties of plasma sprayed yttria partially stabilized zirconia (YSZ) thermal barrier coatings (TBCs). The as-sprayed YSZ coatings were characterized in terms of defects (such as pores, unmelted particles and cracks) and fracture toughness. The results showed that, due to the higher temperature and velocity of in-flight particles in a supersonic atmospheric plasma spraying (SAPS) compared to that of atmospheric plasma spraying (APS), denser coatings were formed leading to a better fracture toughness. The percentage of defects of the microstructure was similar to the temperature and velocity of particles in-flight during plasma spraying. Furthermore, the structural defects had a strong effect on its mechanical behavior. The total defect percentage and fracture toughness in SAPS-TBCs spanned 6.9 ± 0.17%–13.26 ± 0.22% and 2.52 ± 0.06 MPa m1/2–1.78 ± 0.19 MPa m1/2; and 11.11 ± 0.36%–17.15 ± 0.67% and 2.13 ± 0.08 MPa m1/2–1.4 ± 0.12 MPa m1/2 in APS-TBCs. Full article
(This article belongs to the Special Issue Advanced Ceramic Coatings and Interfaces)
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10 pages, 2071 KiB  
Article
Phase Composition, Thermal Conductivity, and Toughness of TiO2-Doped, Er2O3-Stabilized ZrO2 for Thermal Barrier Coating Applications
by Qi Wang, Lei Guo, Zheng Yan and Fuxing Ye
Coatings 2018, 8(7), 253; https://doi.org/10.3390/coatings8070253 - 20 Jul 2018
Cited by 14 | Viewed by 4668
Abstract
TiO2 was doped into Er2O3-stabilized ZrO2 (ErSZ) to obtain desirable properties for thermal barrier coating (TBC) applications. The phase composition, thermal conductivity, and mechanical properties of TiO2-doped ErSZ were investigated. ErSZ had a non-transformable metastable [...] Read more.
TiO2 was doped into Er2O3-stabilized ZrO2 (ErSZ) to obtain desirable properties for thermal barrier coating (TBC) applications. The phase composition, thermal conductivity, and mechanical properties of TiO2-doped ErSZ were investigated. ErSZ had a non-transformable metastable tetragonal (t′) phase, the compound with 5 mol % TiO2 consisted of t′ and cubic (c) phases, while 10 mol % TiO2 doped ErSZ had t′, c, and about 3.5 mol % monoclinic (m) phases. Higher TiO2 doping contents caused more m phase, and the compounds were composed of t′ and m phases. When the dopant content was below 10 mol %, TiO2 doping could decrease the thermal conductivity and enhance the toughness of the compounds. At higher doping levels, the compounds exhibited an increased thermal conductivity and a reduction in the toughness, mainly attribable to the formation of the undesirable m phase. Hence, 10 mol % TiO2-doped ErSZ could be a promising candidate for TBC applications. Full article
(This article belongs to the Special Issue Advanced Ceramic Coatings and Interfaces)
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2077 KiB  
Article
The Electronic and Elastic Properties of Si Atom Doping in TiN: A First-Principles Calculation
by Yuan Ren, Xiangbao Gao, Chao Zhang, Xuejie Liu and Shiyang Sun
Coatings 2018, 8(1), 4; https://doi.org/10.3390/coatings8010004 - 21 Dec 2017
Cited by 5 | Viewed by 4642
Abstract
The elastic properties and electronic structure of interfaces in Ti–Si–N nanocomposite films were calculated using first principles based on density functional theory (DFT). The results showed that the mechanical moduli of the single-substitution interface (1Si–6N) were higher than those of the double-substitution interface [...] Read more.
The elastic properties and electronic structure of interfaces in Ti–Si–N nanocomposite films were calculated using first principles based on density functional theory (DFT). The results showed that the mechanical moduli of the single-substitution interface (1Si–6N) were higher than those of the double-substitution interface and interstitial interface (1Si–4Ti4N). The single-substitution interface (1Si–6N) was revealed to be characterized as the more elastically isotropic structure in different directions, whereas the Young’s moduli significantly varied in different directions in the interstitial interface (1Si–4Ti4N). The electronic structures of interfaces indicated that the structures were conductors with intersecting bands. Strongly delocalized d states of titanium and silicon ions were spread over a wide region of about 10–12 eV and were strongly hybridized with the nitrogen 2p states. The overall appearance of the calculated cross-sections of the electron density difference changed drastically. Full article
(This article belongs to the Special Issue Advanced Ceramic Coatings and Interfaces)
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5486 KiB  
Article
Development of a TiC/Cr23C6 Composite Coating on a 304 Stainless Steel Substrate through a Tungsten Inert Gas Process
by Behzad Heidarshenas, Ghulam Hussain and Mohammed. Bsher. A. Asmael
Coatings 2017, 7(6), 80; https://doi.org/10.3390/coatings7060080 - 14 Jun 2017
Cited by 14 | Viewed by 5909
Abstract
The aim of this study was to develop a composite coating on 304 stainless steel employing a TIG (tungsten inert gas) process. Ti wire cored with graphite powder was used as the means of coating material. The process parameters were controlled to develop [...] Read more.
The aim of this study was to develop a composite coating on 304 stainless steel employing a TIG (tungsten inert gas) process. Ti wire cored with graphite powder was used as the means of coating material. The process parameters were controlled to develop a coating with optimum characteristics (i.e., hardness and wear resistance). The microstructure of the coating was analyzed with SEM and XRD. It was found that both the hardness and the wear resistance increase as the current increases, while both of these properties decrease as travelling speed increases. It was found that the coated samples with composite layers were harder than the substrate and can range up to 1100 HV, almost 4.5 times higher than the hardness of 304 stainless steel. Likewise, the wear resistance of the coating was observed to be 4.5 times higher than that of the substrate. The high performance of the coating, as revealed by microstructural analysis, was due to the formation of TiC and Cr23C6.The optimum conditions for producing the coating are thus proposed to include a 120 A current and a 3.17 mm/s travel speed. Full article
(This article belongs to the Special Issue Advanced Ceramic Coatings and Interfaces)
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