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Coatings, Volume 11, Issue 7

July 2021 - 129 articles

Cover Story: Gyrotrons are powerful microwave generator and essential component in fusion reactor research facilities. Their purpose is to provide a focused microwave beam typically in the range of 140–170 GHz and a power output of 1–2 MW. Electron cyclotron resonance heating is the main concept for plasma heating in toroidal fusion reactors based on the magnetic confinement principle. For gyrotron testing, a specially designed RF load is needed to absorb the intense microwave radiation without taking damage. Large copper tubes with an internal absorber coating are used for this purpose. The water-cooled unit is capable of absorbing 1–2 MW radiation and converting it to heat. The absorber coating consists of a plasma-sprayed mixed oxide that is applied to the inner surface of the tube. View this paper
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Articles (129)

  • Communication
  • Open Access
5 Citations
5,014 Views
8 Pages

20 July 2021

A hollow inner electrode covered with a dielectric tube was inserted into an outer electrode and airflow was fed through the inner electrode. The electrodes were then connected to a transformer operated at an alternating voltage with sinusoidal wavef...

  • Article
  • Open Access
10 Citations
4,431 Views
12 Pages

TiN/NbN Nanoscale Multilayer Coatings Deposited by High Power Impulse Magnetron Sputtering to Protect Medical-Grade CoCrMo Alloys

  • Arunprabhu Arunachalam Sugumaran,
  • Yashodhan Purandare,
  • Krishnanand Shukla,
  • Imran Khan,
  • Arutiun Ehiasarian and
  • Papken Hovsepian

20 July 2021

This study describes the performance of nanoscale multilayer TiN/NbN coatings deposited on CoCrMo medical-grade alloys by utilising novel mixed high power impulse magnetron sputtering (HIPIMS) and direct current unbalanced magnetron sputtering (UBM)...

  • Article
  • Open Access
29 Citations
4,739 Views
12 Pages

Thermal Cycling Behavior of Air Plasma-Sprayed and Low-Pressure Plasma-Sprayed Environmental Barrier Coatings

  • Dianying Chen,
  • Aaron Pegler,
  • Gopal Dwivedi,
  • Daniel De Wet and
  • Mitchell Dorfman

20 July 2021

Yb2Si2O7/Si environmental barrier coatings (EBCs) were produced by air plasma spray (APS) and low-pressure plasma spray (LPPS) processes. The phase composition, microstructure, and bonding strength of APS and LPPS EBCs were investigated. Thermal cycl...

  • Article
  • Open Access
77 Citations
8,023 Views
14 Pages

Effect of Selenium Nanoparticles on Germination of Hordéum Vulgáre Barley Seeds

  • Shahida Anusha Siddiqui,
  • Andrey Vladimirovich Blinov,
  • Alexander Vladimirovich Serov,
  • Alexey Alekseevich Gvozdenko,
  • Alexander Aleksandrovich Kravtsov,
  • Andrey Ashotovich Nagdalian,
  • Vladislav Viktorovich Raffa,
  • David Guramievich Maglakelidze,
  • Anastasiya Alexandrovna Blinova and
  • Anna Vitalievna Kobina
  • + 2 authors

19 July 2021

Within the framework of this study, the effect of nanoparticles of the essential trace element selenium stabilized by Polyvinylpirrolidone (PVP) C15 (8 ± 2 kDa) and ascorbic acid on the germination of barley seeds has been studied. Selenium nanoparti...

  • Article
  • Open Access
49 Citations
9,153 Views
15 Pages

Optimization of the Active Layer P3HT:PCBM for Organic Solar Cell

  • Mohamed Shaban,
  • Mohamed Benghanem,
  • Abdullah Almohammedi and
  • Mohamed Rabia

19 July 2021

ITO/PEDOT:PSS/P3HT:PC60BM/Mg-Al organic solar cells (OSCs) were fabricated depending on optimization of Poly(3-hexylthiophene-2,5-diyl) (P3HT) and phenyl-C61-Butyric-Acid-Methyl Ester (PC60BM). The optimization of the active layer, P3HT:PC60BM, was c...

  • Article
  • Open Access
42 Citations
6,243 Views
13 Pages

19 July 2021

Copper oxides are widely used in photocatalysts, sensors, batteries, optoelectronic, and electronic devices. In order to obtain different material properties to meet the requirements of different application fields, varied technologies and process co...

  • Review
  • Open Access
47 Citations
15,611 Views
15 Pages

Factors Influencing Marginal Bone Loss around Dental Implants: A Narrative Review

  • Jakub Kowalski,
  • Barbara Lapinska,
  • Joseph Nissan and
  • Monika Lukomska-Szymanska

19 July 2021

Implant supported dental prostheses are increasingly used in dental practice. The aim of this narrative review is to present the influence of transmucosal surface of prosthetic abutment and implant on peri-implant tissue. The article describes causes...

  • Article
  • Open Access
8 Citations
2,763 Views
8 Pages

Mechanistic Study on Gold-Like Luster Development of Solution-Cast Oligo(3-methoxythiophene) Film

  • Minako Kubo,
  • Minako Tachiki,
  • Terumasa Mitogawa,
  • Kota Saito,
  • Ryota Saito,
  • Satoru Tsukada,
  • Takahiko Horiuchi and
  • Katsuyoshi Hoshino

18 July 2021

Solution-cast coating films of perchlorate-doped oligo(3-methoxythiophene) exhibited a gold-like luster similar to that of metallic gold despite the involvement of no metals. However, the development mechanism of the luster remains ambiguous. To unde...

  • Article
  • Open Access
8 Citations
3,686 Views
12 Pages

Sintering of Potassium Doped Hydroxy-Fluorapatite Bioceramics

  • Jihen Ben Slimen,
  • Mustapha Hidouri,
  • Marwa Ghouma,
  • Ezzedine Ben Salem and
  • Sergey V. Dorozhkin

17 July 2021

The present study describes the influence of potassium and hydroxyl substitutions on the structural, thermal and mechanical properties of fluorapatite bioceramics. A set of non-stoichiometric ion-substituted compounds, with a chemical formula of Ca10...

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Coatings - ISSN 2079-6412