Academic literature on the topic 'Dense multiphase coatings'

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Journal articles on the topic "Dense multiphase coatings"

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Wang, Zhi-Gang, Wei-Dong Chen, Shu-Fang Yan, et al. "Direct Fabrication and Characterization of Zirconia Thick Coatings on Zirconium Hydride as a Hydrogen Permeation Barrier." Coatings 13, no. 5 (2023): 884. http://dx.doi.org/10.3390/coatings13050884.

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The present work attempted to produce thick zirconia coatings formed by micro-arc oxidation as a hydrogen permeation barrier on zirconium hydride alloy. A novel multiphase zirconia coating was achieved, exhibiting superior hydrogen permeation barrier performance. The growth dynamics, formation mechanism, and phase evolution behavior of thick zirconia coatings were explored, and the hydrogen permeation barrier performance was evaluated by means of vacuum dehydrogenation experiment. The hydrogen desorption quantity was monitored by analyzing pressure changes with a quadruple mass spectrometer (Q
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Maier, Louis, Mario Krug, Mandy Höhn, et al. "Coating of Cubic Boron Nitride Powder with TiN in a Rotating Drum via Gas Phase Processes." Coatings 15, no. 6 (2025): 711. https://doi.org/10.3390/coatings15060711.

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To improve the performance of superhard ceramic composites, this study aims to develop a dense, phase-pure, and uniform TiN coating on cubic boron nitride (cBN) particles with a target thickness of at least 150 nm. TiN coatings were applied using atomic layer deposition (ALD) alone, as well as a combined ALD/chemical vapor deposition (CVD) process. While ALD produced uniform and dense coatings, the thickness remained below 50 nm. The combined ALD/CVD approach achieved greater thicknesses up to 500 nm, though coating homogeneity remained a challenge. Optimization efforts, including increased AL
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Baimoldanova, Lazat, Bauyrzhan Rakhadilov, Aidar Kengesbekov, and Rashid Kuanyshbai. "Influence of Mechanical Activation on the Evolution of TiSiCN Powders for Reactive Plasma Spraying." Crystals 14, no. 11 (2024): 1005. http://dx.doi.org/10.3390/cryst14111005.

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In modern materials science and surface engineering, reactive plasma spraying (RPS) holds a key position due to its ability to create high-quality coatings with unique properties. The effectiveness of this process is largely determined by the physicochemical characteristics of the initial powder materials. This study examines the effects of mechanical activation for two compositions in the TiSiCN system and their impact on the quality and performance characteristics of RPS-produced coatings. It is shown that mechanical activation induces significant changes in the crystalline structure of the
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Sytnykov, Pavlo A. "Plasma Coatings Based on Self-Fluxing NiCrBSi Alloy with Improved Wear Resistance Properties." Journal of Mechanical Engineering 26, no. 3 (2023): 54–64. http://dx.doi.org/10.15407/pmach2023.03.054.

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The structure and properties of plasma coatings sprayed with a composite material based on a self-fluxing NiCrBSi alloy (PG-10N-01 alloy) modified with a composite material obtained by self-propagating high-temperature synthesis were studied. Titanium powders, carbon black, aluminum, iron oxide, PT-NA-01 thermosetting powder and PGOSA-0 refractory clay were used as the initial components of modified with a composite material. Mixing and mechanical activation of the initial powders was carried out in a BM-1 ball mill for 15 minutes at 130 rpm in a ratio of 1 to 40 of the mass of the charge to t
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de Buhan, Patrick. "Yield design-based analysis of reinforced soil structures, making use of different models of reinforced soils." Revue Française de Géotechnique, no. 175 (2023): 4. http://dx.doi.org/10.1051/geotech/2023009.

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This contribution is aimed at applying the static and kinematic methods of the yield design theory, initially developed for homogeneous soils, to the stability analysis of reinforced soil structures. Several mechanical models of reinforced soils are considered to this end, starting from the mixed modelling approach which is the most intuitive one, according to which the reinforcements are treated as one-dimensional beam elements embedded in the soil regarded as a three-dimensional continuum. While this first model is posing some difficulties as regards the implementation of the lower bound sta
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Tsareva, Irina, Lyudmila Krivina, Olga Berdnik, and Evgeny Rasov. "Analysis of nickel-clad ceramic powder materials." E3S Web of Conferences 402 (2023): 11004. http://dx.doi.org/10.1051/e3sconf/202340211004.

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The task of developing new powder materials for use in gas-thermal technologies is solved by cladding metal oxide particles with a refractory metal component. The results of studies of powders of domestic production based on aluminum oxide (corundum) and zirconium dioxide subjected to chemical nickel cladding (8 and 30 %) are presented. The morphology, granular and phase compositions, as well as the distribution of the elemental composition were studied using electron microscopy and X-ray diffraction analysis. It is shown that the formation of a dense and homogeneous metal shell around the par
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Lyu, Xingxing, Xiaosong Jiang, Hongliang Sun, and Zhenyi Shao. "Microstructure and mechanical properties of WC–Ni multiphase ceramic materials with NiCl2·6H2O as a binder." Nanotechnology Reviews 9, no. 1 (2020): 543–57. http://dx.doi.org/10.1515/ntrev-2020-0044.

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AbstractHigh-density WC–Ni composite ceramics were prepared by cold isostatic pressing–vacuum pressureless sintering–hot isostatic pressing with tungsten carbide (WC) powder and NiCl2·6H2O as a binder. Results show that with an increase in the contents of Ni in the metal binder phase, the relative density of WC–Ni composite ceramics is improved, and the formation of the carbon-deficient W2C phase is reduced. There is no W2C generated in the WC–1 wt% Ni material. At high temperatures, the Ni phase changes into the liquid phase and enters between the WC particles, thereby promoting the close ali
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Xu, Junjie, Wei Sun, Xiang Xiong, et al. "Microstructure and ablation behaviour of a strong, dense, and thick interfacial ZrxHf1-xC/SiC multiphase bilayer coating prepared by a new simple one-step method." Ceramics International 46, no. 8 (2020): 12031–43. http://dx.doi.org/10.1016/j.ceramint.2020.01.244.

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Sharin, P. P., S. P. Yakovleva, M. P. Akimova, and V. I. Popov. "The use of high-resolution methods of research in the design of the diamond-matrix interface to increase the durability of the diamond tool." Industrial laboratory. Diagnostics of materials 86, no. 6 (2020): 62–71. http://dx.doi.org/10.26896/1028-6861-2020-86-6-62-71.

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The results of studying fundamental and applied problems regarding the formation of boundary layers between diamond and carbide matrix are presented with the goal to develop a highly resistant diamond tool. The new approaches to the synthesis of diamond-carbide materials combining diamond metallization and sintering in a single-stage technology are presented. The developed technology eliminates the re-heating of a metallized coatings which results in their destruction and enhanced graphitization of diamond (these phenomena restrict using metallization procedure to improve diamond retention and
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Liang, Baoyan, Zhiwei Wang, and Yanli Zhang. "Effect of c-BN Size and Content on the Self-Propagating High-Temperature Synthesis of c-BN Composites Bonded with Ti-Al-C System Multiphase Products." High Temperature Materials and Processes 35, no. 4 (2016): 369–74. http://dx.doi.org/10.1515/htmp-2014-0151.

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AbstractA mixture of Ti, Al, graphite and c-BN powders was used as raw material to fabricate Ti2AlC matrix-bonded c-BN composite using the self-propagating high-temperature synthesis (SHS) method. The effect of c-BN size and content on the fabrication of the composites was investigated. The results show that Ti2AlC matrix-bonded c-BN composites can be obtained by SHS. c-BN content and size evidently affected the phase composition and microstructure characteristic of the composites. At 10–30% c-BN (120/140 mesh) content, the product phases were Ti2AlC, Ti3AlC2, Al3Ti, TiN, TiC, AlN, graphite an
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Dissertations / Theses on the topic "Dense multiphase coatings"

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Куцомеля, Юлія Юріївна, Юлия Юрьевна Куцомеля, Yuliia Yuriivna Kutsomelia, О. П. Чейлях та А. С. Сіухін. "Елементний склад і морфологія поверхні покриття, отриманого методом імпульсно-плазмової обробки". Thesis, Сумський державний університет, 2017. http://essuir.sumdu.edu.ua/handle/123456789/66598.

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Можливість використання електродів з різних матеріалів та відносна простота отримання покриття метолом імпульсно-плазмової обробки (ІПО) є неабиякою перевагою розробленого способу. Установити залежність утворених розмірів шару і структури від режимів ІПО і матеріалу підкладки, що служить основою для створення нових покриттів в конструкційних сталях дозволяють дослідження структурно змінених шарів.
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Conference papers on the topic "Dense multiphase coatings"

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Al-Abbas, Faisal M., Marwan S. Alsulami, Hadi F. Al-Mansour Ayman A. Alabdullatif, Fadhel H. Asfoor, and Mohammed M. Al Zamanan. "Top of the Line Corrosion Mechanism for Multiphase Sour Gas Subsea Pipeline." In CONFERENCE 2023. AMPP, 2023. https://doi.org/10.5006/c2023-18782.

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Abstract The development of an offshore industry is directly related to the development of subsea pipelines as well. Top of the Line Corrosion (TLC) is a phenomenon of global importance in the subsea pipelines. TLC is driven by the condensation of water enriched with corrosive gases. TLC occurs in a multiphase flow when water vapor condenses at the top and the sides of the pipeline, leading to a severe corrosion attack. The condensation happens due to the heat exchange occurring between the pipe and surroundings seawater. TLC corrosion can be dominated by either the sweet corrosion or sour cor
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