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Coatings, Volume 14, Issue 12

December 2024 - 145 articles

Cover Story: Lubricants are substances that reduce friction and heat dissipation between operating machine parts. In response to increasing operational and environmental requirements for lubricants, tribological tests were carried out using biodegradable vegetable oils. rapeseed, sunflower, corn, soybean, and Priolube ester oil containing nanoparticle hexagonal boron nitride (h-BN) and a dispersant. The tests of various vegetable oils show that the best effect was obtained for a lubricant based on rapeseed oil, for which 2.5% by weight (70 nm) h-BN was introduced in the preparation process. Obtained results confirm that lubricating oils prepared in this way are characterized by promising tribological properties, are easy to prepare, and are environmentally friendly. View this paper
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Articles (145)

  • Article
  • Open Access
1,708 Views
10 Pages

Could Marginal Adaptation of Composite Resin Restorations Be Influenced by a Different Polymer Using Different Techniques?

  • Jefferson Ricardo Pereira,
  • Alef Vermudt,
  • Ageu Raupp Junior,
  • Diego Saccon Bordignon,
  • Henrique Vieira Medeiros,
  • Lucas David Galvani,
  • Ricardo Abreu da Rosa,
  • Marcus Vinicius Reis Só and
  • Milton Carlos Kuga

23 December 2024

Background: Marginal adaptation is one of biggest challenges in restorative dentistry, mainly in restoration of composite resin. Even with development of lower shrinkage materials, like those which use the polymer silorane, it is necessary a faithful...

  • Article
  • Open Access
2 Citations
1,145 Views
15 Pages

Effect of Oscillating Amplitude on Microstructure and Mechanical Property of Laser Welding of Dissimilar Stainless Steel

  • Xianhui Zeng,
  • Chao Lu,
  • Quan Zhu,
  • Xiaoli Cui,
  • Zilin Li,
  • Wenqing Shi,
  • Ruihua Zhang,
  • Xiao Liu and
  • Di Tie

23 December 2024

The development of oscillating laser beam welding (OLBW) provides an opportunity to improve the weld formation of dissimilar stainless steels. In this paper, the influence of oscillating amplitude on the weld formation, microstructure, and mechanical...

  • Article
  • Open Access
5 Citations
1,609 Views
12 Pages

Effect of Ion-Assisted Deposition Energy of RF Source on Optical Properties, Microstructure, and Residual Stress of HfO2 Thin Films

  • Bo Wang,
  • Jian Zhang,
  • Hai Liu,
  • Haigui Yang,
  • Yanchao Wang,
  • Haifeng Wang,
  • Jingjie Pan,
  • Zhen Liu,
  • Zhenfeng Shen and
  • Wenkai Gao
  • + 5 authors

23 December 2024

HfO2 thin films were prepared using radio frequency (RF) ion source-assisted deposition, and the effects of auxiliary ion energy on the microstructure, optical properties, and residual stress of the films were systematically studied. The experimental...

  • Article
  • Open Access
1 Citations
1,672 Views
16 Pages

Analyses of the Properties of the NiO-Doped Ga2O3 Wide-Bandgap Semiconductor Thin Films

  • Cheng-Fu Yang,
  • En-Chi Tsao,
  • Yi-Wen Wang,
  • Hsin-Pei Lin,
  • Teen-Hang Meen and
  • Shu-Han Liao

23 December 2024

The study began by pre-sintering Ga2O3 powder at 950 °C for 1 h, followed by the preparation of a mixture of Ga2O3 and 12 at% NiO powders to fabricate a source target material. An electron beam (e-beam) system was then used to deposit NiO-doped G...

  • Article
  • Open Access
1 Citations
1,375 Views
23 Pages

23 December 2024

The reduction of drag for both aircraft and underwater equipment has the potential to reduce their overall energy consumption. Consequently, research into the drag-reducing performance of metal surfaces has significant practical applications. However...

  • Article
  • Open Access
1 Citations
1,430 Views
17 Pages

23 December 2024

Strain tolerance is a crucial factor affecting the thermal life of coatings, and a higher strain tolerance can effectively alleviate the thermal stresses on coatings during thermal shock. To improve the strain tolerance, the coating structure was opt...

  • Article
  • Open Access
1,136 Views
9 Pages

The Modelling of Light Absorption and Reflection in a SiOx/Si Structure with Al Nanoparticles for Solar Cells

  • Jevgenijs Kaupužs,
  • Arturs Medvids,
  • Pavels Onufrijevs,
  • Leonid Fedorenko and
  • Anatoliy Evtukh

23 December 2024

In this study, the light propagation in a structure consisting of SiOx on Si substrate with Al nanoparticles regularly placed in the SiOx layer is considered. Numerical modelling is performed by solving the Maxwell equations for the electromagnetic w...

  • Article
  • Open Access
1,131 Views
15 Pages

Effect of Paste Film Thickness on Workability and Strength of Magnesium Phosphate Cement Mortar

  • He Liu,
  • Haonan Zou,
  • Jingyi Zhang,
  • Ji Zhang,
  • Jian Zhang,
  • Yu Tang and
  • Peng Zhang

23 December 2024

In order to better understand the effect of compositional parameters on the properties of magnesium phosphate cement (MPC) mortar, the relationship between the thickness of paste film and the workability and strength of MPC mortar is revealed. A thre...

  • Article
  • Open Access
3 Citations
5,061 Views
14 Pages

23 December 2024

Polyurethane coatings are widely used as protective layers against wear, mainly abrasive wear. They have recently been applied to surfaces exposed to erosive wear, such as wind turbine blades. This study investigated the abrasive and erosive wear of...

  • Article
  • Open Access
2 Citations
1,384 Views
10 Pages

23 December 2024

Conductive polymer materials, particularly PEDOT:PSS conductive polymers, have gained widespread attention due to their excellent conductivity, processability, and biocompatibility, making them highly applicable in fields such as bioelectrodes, flexi...

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Coatings - ISSN 2079-6412Creative Common CC BY license