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Yung-I Chen, Tso-Shen Lu and Zhi-Ting Zheng
In this study, equiatomic Ru?Zr coatings were deposited on Si wafers at 400 °C by using direct current magnetron cosputtering. The plasma focused on the circular track of the substrate holder and the substrate holder rotated at speeds within 1?30 rpm, re...
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Linyun Zhang, Chongxing Huang and Hui Zhao
In this work, some multilayer coatings (two-layer, four-layer or six-layer) based on pullulan and chitosan for protecting papayas were prepared by the layer-by-layer technique. The papayas were coated by immersion and stored at 25 °C, 50% relative humidi...
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Mihaela Dinu, Emile S. Massima Mouele, Anca C. Parau, Alina Vladescu, Leslie F. Petrik and Mariana Braic
Chromium nitride and oxynitride coatings were deposited as monolayers ((Cr?N), Cr(N,O)) and bilayers (Cr?N/Cr(N,O), Cr(N,O)/Cr?N) on 304 steel substrates by reactive cathodic arc method. The coatings were characterised by X-ray diffraction (XRD), scannin...
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Mingrui Geng, Guangyu He, Zhiping Sun, Jiao Chen, Zhufang Yang and Yuqin Li
TiN/ZrN multilayers can effectively improve the erosion resistance of metals, particularly titanium alloys employed in aero engines. To explore the corrosion damage mechanism of TiN/ZrN nanoscale multilayers (nanolaminate), a novel [TiN/ZrN]100 nanolamin...
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Mohammadmehdi Shabani, Joaquim Sacramento, Filipe J. Oliveira and Rui F. Silva
Ceramic cutting inserts coated with ten-fold alternating micro- and nanocrystalline diamond (MCD/NCD) layers grown by hot filament chemical vapor deposition (CVD) were tested in the machining of an Al based metallic matrix composite (MMC) containing 15 v...
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V. V. Artemchuk
Pág. 20 - 25
The issues related to renewal of worn-out parts of a rolling stock with the layered coatings are considered in the article. In developing a mathematical model of wearing a multilayer material as an object of rheology certain assumptions, which enable usi...
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Siyuan Xu, Hongbao Jia, Chunyang Wang, Wenping Zhao, Ying Wang, Chunming Yang, Henan Wu, Jiang Zhu, Biao Wang and Qian Wang
Multilayer broadband antireflective (AR) coatings consisting of porous layers usually suffers poor functional durability. Based on a quarter-half-quarter multilayer structure, AR coatings with dense SiO2 film as the top layer are designed, and refractive...
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Fabio C. Caiazzo, Valentina Sisti, Stefano P. Trasatti and Sergio Trasatti
In this work, a series of mono-and multilayer coatings were considered. They consisted of CrN and Cr prepared by physical vapor deposition with a cathodic arc. The most common steels for molds of plastics were chosen as substrates: X37CrMoV5-1 (SMV3), X2...
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Arutiun Ehiasarian, Yashodhan Purandare, Arunprabhu Sugumaran, Papken Hovsepian, Peter Hatto and Jeroen De Backer
The Stationary Shoulder Friction Stir Welding (SS-FSW) technique benefits from reduced heat input, improved mechanical properties and surface finish of the weld, avoiding the need for post weld processing. Coatings on the tool probe and the shoulder for ...
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Bruna Aparecida Rezende, Anderson Júnior dos Santos, Marcelo Araújo Câmara, Denilson José do Carmo, Manuel Houmard, Alessandro Roger Rodrigues and Juan Carlos Campos Rubio
In order to obtain better cutting tool performance, the coatings appear as an alternative in the machining process. The goal of the coating is to improve tribological conditions in the chip-tool and tool-workpiece interfaces. On the other hand, the use o...
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Alexey Vereschaka, Sergey Grigoriev, Nikolay Sitnikov, Anatoliy Aksenenko, Filipp Milovich, Nikolay Andreev, Gaik Oganyan and Jury Bublikov
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Shahereen Chowdhury, Bipasha Bose, Kenji Yamamoto and Stephen C. Veldhuis
The TiAlCrSiYN-based family of physical vapor deposition (PVD) coatings were systematically designed through the incorporation of TiAlCrN interlayer to increase coating adhesion and consequently the tool life for extreme conditions that arise during dry ...
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Sergey Grigoriev, Alexey Vereschaka, Alexander Metel, Nikolay Sitnikov, Filipp Milovich, Nikolay Andreev, Svetlana Shevchenko and Yulia Rozhkova
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Hoe-Kun Kim, Sung-Min Kim and Sang-Yul Lee
The CrZrN/CrZrSiN multilayer coatings at a bilayer period range decreasing from 1.35 µm to 0.45 µm were synthesized on a Si (100) wafer and WC-6 wt.% Co substrate using a closed-field unbalanced magnetron sputter, and the thickness effects on the mechani...
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Shahereen Chowdhury, Ben D. Beake, Kenji Yamamoto, Bipasha Bose, Myriam Aguirre, German S. Fox-Rabinovich and Stephen C. Veldhuis
The TiAlCrSiYN-based family of PVD (physical vapor deposition) hard coatings was specially designed for extreme conditions involving the dry ultra-performance machining of hardened tool steels. However, there is a strong potential for further advances in...
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Enrique Carretero and Rafael Alonso
This paper introduces a thin film multilayer structure composed of dielectric and metallic layers that allows for a wide range of aesthetic appearances using the phenomenon of optical interference. In addition, this multilayer structure allows the reflec...
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Juliana Lasprilla-Botero, Sergio Torres-Giner, Maria Pardo-Figuerez, Mónica Álvarez-Láinez and Jose M. Lagaron
A coating rendering superhydrophobic properties to low-density polyethylene (LDPE) films used in packaging applications was herein generated by means of the electrohydrodynamic processing (EHDP) technique. To this end, electrospun ultrathin poly(&epsilon...
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Dmitry Wainstein, Anatoly Kovalev, Vladimir Vakhrushev, Raul Gago and Jose L. Endrino
Multilayer nanolaminate TiAlN/Ag and Al2O3/Ag metal-insulator-metal (MIM) coatings with thicknesses of individual layers from a few to several hundreds of nanometers were fabricated by direct current magnetron sputtering. Their optical transmittance and ...
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Maria Pardo-Figuerez, Alex López-Córdoba, Sergio Torres-Giner and José M. Lagaron
Interest in coated films with micro/nanofeatures has grown rapidly in recent years due to their enhanced functional performance and better durability under demanding contact conditions or aggressive environments. In the current work, it is reported a one...
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Francisco Silva, Rui Martinho, Maria Andrade, António Baptista and Ricardo Alexandre
It is well known that injection of glass fibre?reinforced plastics (GFRP) causes abrasive wear in moulds? cavities and runners. Physical vapour deposition (PVD) coatings are intensively used to improve the wear resistance of different tools, also being o...
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