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Journal articles on the topic 'Cold kinetic deposition'

Author: Grafiati

Published: 28 June 2021

Last updated: 29 July 2025

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1

Šafl, P., J. Zimáková, T. Binar, and P. Čudek. "New possibilities of using cold kinetic deposition." Journal of Physics: Conference Series 2382, no. 1 (2022): 012016. http://dx.doi.org/10.1088/1742-6596/2382/1/012016.

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This work deals with the properties of the protective layer applied to the base material using the cold spray method. Aluminum plate, on which a thin layer of copper was applied, served as the basic material. The samples prepared in this way were subjected to accelerated corrosion tests. Sensors for measuring the acoustic emission signal were attached to the samples. The recording was an acute emission and was taken during the entire period of corrosion. The properties of the deposited layer were also verified using metallography.

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Yu, Hai Jiao, Yu Ya Wang, Jun Xue, and Zun Wang. "An Advanced Metal Deposition Technique-Kinetic Metallization." Materials Science Forum 817 (April 2015): 510–15. http://dx.doi.org/10.4028/www.scientific.net/msf.817.510.

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Kinetic metallization (KM) is a sonic cold spray metal deposition technique, which offers promise as a way to produce coatings with a wild range of thickness. It is a solid-state process, from which the obtained coating is oxide free, high compactness (the porosity ratio may less than 0.1%), and has a strong bonding with the matrix. KM now is extensively applied in many fields, such as part/structure dimensional repair, solar battery manufacture, corrosion resistance and protection, wear resistance, oxidation resistance, and polymer spray. The present work presented the elements and advantages

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Koivuluoto, Heli, Andrea Milanti, Giovanni Bolelli, et al. "Structures and Properties of Laser-Assisted Cold-Sprayed Aluminum Coatings." Materials Science Forum 879 (November 2016): 984–89. http://dx.doi.org/10.4028/www.scientific.net/msf.879.984.

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In the cold spray process, solid particles impact on a surface with high kinetic energy, deform plastically and form a coating. This enables the formation of pure and dense coating structures. Even more, coating performance and deposition efficiency can be improved by assisting the process with a laser. Laser-assisted cold spraying (LACS) has shown its potential to improve coating properties compared with traditional cold spraying. In this study, coating quality improvement was obtained by using a co-axial laser spray (COLA) process which offers a new, cost-effective laser-assisted cold spray

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Binar, Tomáš, Jana Zimáková, Michal Šustr, Lukáš Řehořek, Maros Samel, and Marie Sedlarikova. "Degradation of the Layer Applied by Cold Kinetic Deposition." ECS Transactions 105, no. 1 (2021): 339–54. http://dx.doi.org/10.1149/10501.0339ecst.

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During the described experiment, a sample with a copper coating was formed on an aluminum substrate by cold spray. Subsequently, this sample was split for corrosion tests, where the split samples were exposed to a corrosive environment for different exposure times. The extent of corrosion degradation of the samples was evaluated by acoustic emission and metallographic analysis for corrosion-loaded samples for 100, 200 and 300 hours.

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5

Forero-Sossa, Paola Andrea, Astrid Lorena Giraldo-Betancur, Carlos A. Poblano-Salas, et al. "Nozzle Geometry and Particle Size Influence on the Behavior of Low Pressure Cold Sprayed Hydroxyapatite Particles." Coatings 12, no. 12 (2022): 1845. http://dx.doi.org/10.3390/coatings12121845.

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Low-pressure cold spray (LPCS) technology has attracted interest for the deposition of ceramic coatings due to the thermo-kinetic conditions experienced by the sprayed particles. Unlike conventional thermal spray techniques, the spraying conditions in LPCS can be controlled to avoid the formation of undesired phases. However, ceramics deposition through this process is still challenging. The present study includes a finite element analysis and simulation study of the kinetic conditions of ceramic particles in the LPCS process based on experimental data. The analysis seeks to discuss the effect

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6

Kubicki, Grzegorz, Volf Leshchynsky, Ahmed Elseddawy, et al. "Microstructure and Properties of Hydroxyapatite Coatings Made by Aerosol Cold Spraying–Sintering Technology." Coatings 12, no. 4 (2022): 535. http://dx.doi.org/10.3390/coatings12040535.

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Hydroxyapatite is a widely used material used for the bioactivation of an implant’s surface. A promising hydroxyapatite coating approach is the kinetic deposition of powder particles. The possibility of solid-state deposition improvement through the merging of Aerosol Deposition and Low Pressure Cold Spraying techniques is a promising prospect for improving the deposition efficiency and the quality of coatings. The objective of the paper is to study the possibilities of hydroxyapatite coating structure modification through changes in the coating process and post-heat treatment. The novel Aeros

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Binar, Tomáš, Jana Zimáková, Jakub Steiniger, et al. "The Spread of Corrosion of the Deposited Material Using the Cold Spray Method." ECS Transactions 105, no. 1 (2021): 355–69. http://dx.doi.org/10.1149/10501.0355ecst.

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A layer of copper was applied to the base aluminum material using the cold spray method (cold kinetic deposition). The samples were exposed to corrosion in a salt chamber for 100, 200 and 300 hours. The change in the size of the internal and surface resistance of the samples was monitored. The corrosion results were also examined using an electron microscope.

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8

Lee, Jae Chul, Doo Man Chun, Sung Hoon Ahn, and Caroline S. Lee. "Material Properties of Thick Aluminum Coating Made by Cold Gas Dynamic Spray Deposition." Key Engineering Materials 345-346 (August 2007): 1097–100. http://dx.doi.org/10.4028/www.scientific.net/kem.345-346.1097.

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Cold gas dynamic spray is a relatively new coating process by which coatings can be produced without significant heating during the process. Cold gas dynamic spray is conducted by powder sprayed using supersonic gas jet, and generally called the kinetic spray or cold spray. Its low process temperature can minimize the thermal stress and also reduce the deformation of the substrate. In this study, thick or macro scale deposition was studied while most researches on cold-spray have focused on micro scale coating. Measured material properties of macro scale deposition layer showed that elastic mo

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9

W. J., W. J. "Effects of Metal Particles on Cold Spray Deposition onto Ti-6Al-4V Alloy via Abaqus/Explicit." Journal of Engineering Sciences 7, no. 2 (2020): E19—E25. http://dx.doi.org/10.21272/jes.2020.7(2).e4.

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Titanium alloy is the main structural material of the aerospace system component. About 75 % of titanium and titanium alloys in the world are used in the aerospace industry. Hence, it is of great significance to study the surface deposition characteristics by cold spraying technology, taking Ti-6Al-4V alloy as an example, smoothed particle hydrodynamics (SPH) method in Abaqus/Explicit was used to spray aluminum, Ti-6Al-4V, copper, tungsten alloy (W alloy) and titanium particles onto Ti-6Al-4V substrate. The simulation results show that the deposition effect is good over 600 m/s, and higher ene

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10

Henao, John, Astrid Giraldo-Betancur, Carlos A. Poblano-Salas, et al. "On the Role of Substrate in Hydroxyapatite Coating Formation by Cold Spray." Coatings 14, no. 10 (2024): 1302. http://dx.doi.org/10.3390/coatings14101302.

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The deposition of agglomerated hydroxyapatite (HAp) powders by low-pressure cold spray has been a topic of interest in recent years. Key parameters influencing the deposition of HAp powders include particle morphology and impact kinetic energy. This work examines the deposition of HAp powders on various metal surfaces to assess the impact of substrate properties on the formation of HAp deposits via cold spray. The substrates studied here encompass metals with varying hardness and thermal conductivities, including Al6061, Inconel alloy 625, AISI 316 stainless steel, H13 tool steel, Ti6Al4V, and

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11

Ashokkumar, Mohankumar, Duraisamy Thirumalaikumarasamy, Tushar Sonar, Sampathkumar Deepak, Packkirisamy Vignesh, and Mani Anbarasu. "An overview of cold spray coating in additive manufacturing, component repairing and other engineering applications." Journal of the Mechanical Behavior of Materials 31, no. 1 (2022): 514–34. http://dx.doi.org/10.1515/jmbm-2022-0056.

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Abstract Cold spray process (CSP) is a thermal spray technology in which coating (10–40 µm) is formed in the solid state by the impingement of power particles with supersonic velocity (200–1,200 m/s2) on coupon employing compressed gas jet, below the melting point of coating powder. It is commonly referred as cold gas dynamic spray, high velocity powder deposition, kinetic spray and kinetic energy metallisation process. Using CSP, various engineering materials (metals, polymers and ceramics) and its composites can be deposited. It is unique and promising approach for obtaining surface coating

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12

Lupu, Fabian Cezar, Corneliu Munteanu, Adrian Constantin Sachelarie, Vlad Nicolae Arsenoaia, and Bogdan Istrate. "Improving the Usage Properties of Steel Using Cold Spray Deposition: A Review." Crystals 13, no. 2 (2023): 245. http://dx.doi.org/10.3390/cryst13020245.

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In this paper, the improvement of the characteristics of different steels that are subjected to extreme operating conditions, including the steels used in the manufacture of various military components, the AISI 52100, the manufacture of bearings, and other types of parts that are also subjected to severe operating conditions were analyzed regarding cold spraying, which uses different types of powders to increase the performance of the materials. The cold, thermal spraying technology “Cold Spray” is a method of processing particles in a solid state. Thermal spraying, based on the dynamic incre

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Oyinbo, Sunday Temitope, and Tien-Chien Jen. "Feasibility of numerical simulation methods on the Cold Gas Dynamic Spray (CGDS) Deposition process for ductile materials." Manufacturing Review 7 (2020): 24. http://dx.doi.org/10.1051/mfreview/2020023.

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The techniques of cold gas dynamic spray (CGDS) coating involve the deposition of solid, high speed micron to nano particles onto a substrate. In contrast to a thermal spray, CGDS does not melt particles to retain their physico-chemical properties. There have been many advantages in developing microscopic analysis of deformation mechanisms with numerical simulation methods. Therefore, this study focuses on four cardinal numerical methods of analysis which are: Lagrangian, Smoothed Particles Hydrodynamics (SPH), Arbitrary Lagrangian-Eulerian (ALE), and Coupled Eulerian-Lagrangian (CEL) to exami

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14

Manafi Farid, Hannaneh, André McDonald, and James David Hogan. "Impact Deposition Behavior of Al/B4C Cold-Sprayed Composite Coatings: Understanding the Role of Porosity on Particle Retention." Materials 16, no. 6 (2023): 2525. http://dx.doi.org/10.3390/ma16062525.

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This study explores the role of porosity in the impact deposition of a ceramic-reinforced metal-matrix (i.e., Al/B4C) composite coating fabricated via cold spraying. The Johnson–Holmquist–Beissel constitutive law and the modified Gurson–Tvergaard–Needleman model were used to describe the high strain-rate behavior of the boron carbide and the aluminum metal matrix during impact deposition, respectively. Within a finite element model framework, the Arbitrary Lagrangian–Eulerian technique is implemented to explore the roles of reinforcement particle size and velocity, and pore size and depth in p

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15

Liang, Jui-Ting, Shao-Fu Chang, Cheng-Han Wu, et al. "Influence of Feedstock in the Formation Mechanism of Cold-Sprayed Copper Coatings." Coatings 13, no. 6 (2023): 1065. http://dx.doi.org/10.3390/coatings13061065.

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The aim of this article is to investigate the characterizations and formation mechanisms of cold-sprayed coatings using gas-atomized and electrolytic powders. The study highlights the importance of reaching the particles’ critical velocity for optimal deposition. The main findings reveal that the morphology and stacking conditions of the coatings have a significant impact on their mechanical properties. Coatings made with gas-atomized powders exhibited noticeable pores and higher plastic deformation, while electrolytic powder coatings had greater density and smoother interfaces with the substr

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16

Tului, Mario, Cecilia Bartuli, Alessia Bezzon, et al. "Amorphous Steel Coatings Deposited by Cold-Gas Spraying." Metals 9, no. 6 (2019): 678. http://dx.doi.org/10.3390/met9060678.

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Cold-gas spray (CGS) deposition of amorphous steel coatings starting from a commercial feedstock powder containing boron, tungsten, and silicon was investigated. Microstructural characterization, carried out by X-ray diffraction (XRD), transmission electron microscopy, and backscattered electron diffraction (EBSD) analysis, confirmed the amorphous nature of deposited coatings. The amorphization phenomenon is related to high-strain/strain-rate deformation with shear instability caused by very high particle kinetic energy, with a mechanism that resembles the severe plastic deformation process. T

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17

Koivuluoto, Heli, Jussi Larjo, Danilo Marini, Giovanni Pulci, and Francesco Marra. "Cold-Sprayed Al6061 Coatings: Online Spray Monitoring and Influence of Process Parameters on Coating Properties." Coatings 10, no. 4 (2020): 348. http://dx.doi.org/10.3390/coatings10040348.

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Process optimization and quality control are important issues in cold spraying and coating development. Because the cold spray processing is based on high kinetic energy by high particle velocities, online spray monitoring of particle inflight properties can be used as an assisting process tool. Particle velocities, their positions in the spray jet, and particle size measurements give valuable information about spraying conditions. This, in turn, improves reproducibility and reliability of coating production. This study focuses on cold spraying of Al6061 material and the connections between pa

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18

Spencer, Kevin, Daniel Fabijanic, and Ming Xing Zhang. "Cold Spray of Al-MMC Coatings on Magnesium Alloys for Improved Corrosion and Wear Resistance." Materials Science Forum 618-619 (April 2009): 377–80. http://dx.doi.org/10.4028/www.scientific.net/msf.618-619.377.

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Cold spray coatings are considered promising for surface protection of Mg alloys from wear and corrosion since the process temperature is low enough to avoid oxidation of the Mg or any adverse affects on artificial ageing heat treatments. A special version of cold spray known as Kinetic Metallization has been used to produce pure Al and Al alloy metal matrix composite (MMC) coatings on AZ91 Mg alloy substrates in the present work. This surface treatment produces dense coatings with high adhesive and cohesive strength, which have substantially higher hardness and wear resistance than the AZ91 s

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19

Bala, Niraj, Harpreet Singh, and S. Prakash. "An Overview of Cold Spray Technique." Materials Science Forum 561-565 (October 2007): 2419–22. http://dx.doi.org/10.4028/www.scientific.net/msf.561-565.2419.

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The Cold spray or cold gas dynamic spraying is the new progressive step in the direction of development of high kinetic energy coating processes. The cold spray is a method for coating substrates under atmospheric conditions. In this process micron sized solid particles are accelerated and transported to substrates by means of supersonic free jets. Upon impacting the substrates, particles stick to the surface and form coatings which possess very low porosity. The paper outlines the principles involved in cold spray method and the equipment used for the technique. The cold spray method is relat

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20

Li, Xuejie, Fraser Filice, Jeffrey D. Henderson, et al. "Preferential Corrosion in Cold Sprayed Cu Induced by Oxide Inclusions." ECS Meeting Abstracts MA2023-02, no. 12 (2023): 1097. http://dx.doi.org/10.1149/ma2023-02121097mtgabs.

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Cold spray (CS) deposition is a solid-state deposition technique that finds applications in additive manufacturing, coating, and repairing damaged components. During the cold spray deposition process, feedstock particles are accelerated by compressed gas and impinged onto the substrate at high velocity. Bonding between particles and the surface being coated is established by the high kinetic energy released during collision rather than by added thermal energy. As the particles remain in the solid state during spraying, oxidation is minimized. Despite the partial removal of the native air-forme

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21

Krumdieck, S. "Kinetic model of low pressure film deposition from single precursor vapor in a well-mixed, cold-wall reactor." Acta Materialia 49, no. 4 (2001): 583–88. http://dx.doi.org/10.1016/s1359-6454(00)00356-6.

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22

Ogawa, Kazuhiro, and Takahiro Niki. "Repairing of Degraded Hot Section Parts of Gas Turbines by Cold Spraying." Key Engineering Materials 417-418 (October 2009): 545–48. http://dx.doi.org/10.4028/www.scientific.net/kem.417-418.545.

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Hot section parts of combined cycle gas turbines are susceptible to degradation due to high temperature creep, crack formation by thermal stress, and high temperature oxidation, etc. Thus, regularly repairing or replacing the hot section parts such as gas turbine blades is inevitable. For this purpose, revolutionary and advanced repair technologies for gas turbines have been developed to enhance reliability of the repaired parts and reduce the maintenance cost of the gas turbines. The cold spraying process, which has been studied as not only a new coating technology but also as a process for o

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23

Cao, Congcong, Wenya Li, Zhengmao Zhang, Xiawei Yang, and Yaxin Xu. "Cold Spray Additive Manufacturing of Ti6Al4V: Special Nozzle Design Using Numerical Simulation and Experimental Validation." Coatings 12, no. 2 (2022): 210. http://dx.doi.org/10.3390/coatings12020210.

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Cold spray additive manufacturing (CSAM) shows great potential in titanium-alloy production as it is a solid-state process. However, data published so far have demonstrated the difficulty of producing dense and high-strength Ti alloy parts. Our previous studies have shown that nozzle design together with high-cost helium propulsive gas plays a crucial role in particle acceleration. In this work, special nozzles for Ti alloy were designed and validated experimentally with commercially available Ti6Al4V powder. Simulation results show that particle impact temperature increases remarkably for a l

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Mao, Xinyu, Nianyin Li, Fei Chen, Jia Kang, Qian Guo, and Peihong Han. "Study on the practice of downhole dewaxing by in situ generated heat." Journal of Petroleum Exploration and Production Technology 11, no. 4 (2021): 1943–61. http://dx.doi.org/10.1007/s13202-021-01144-y.

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AbstractIn situ heat systems are a technology that effectively solves paraffin deposition and improves oil recovery. Generally, the oxidation–reduction reaction of sodium nitrite and ammonium chloride generates a large amount of heat to promote the melting of paraffin. An in situ heat system combined with an acid-resistant fracturing fluid system can form an in situ heat fracturing fluid system, which solves the problem of the poor reformation effect caused by cold damage during the fracturing process of low-pressure and high-pour-point oil reservoirs. In this paper, with the goals of system h

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Berasategui, Matias, Damien Amedro, Luc Vereecken, Jos Lelieveld, and John N. Crowley. "Reaction between CH<sub>3</sub>C(O)OOH (peracetic acid) and OH in the gas phase: a combined experimental and theoretical study of the kinetics and mechanism." Atmospheric Chemistry and Physics 20, no. 21 (2020): 13541–55. http://dx.doi.org/10.5194/acp-20-13541-2020.

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Abstract. Peracetic acid (CH3C(O)OOH) is one of the most abundant organic peroxides in the atmosphere; yet the kinetics of its reaction with OH, believed to be the major sink, have only been studied once experimentally. In this work we combine a pulsed-laser photolysis kinetic study of the title reaction with theoretical calculations of the rate coefficient and mechanism. We demonstrate that the rate coefficient is orders of magnitude lower than previously determined, with an experimentally derived upper limit of 4×10-14 cm3 molec.−1 s−1. The relatively low rate coefficient is in good agreemen

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26

Zasimov, Pavel V., Sergey V. Ryazantsev, Daniil A. Tyurin, and Vladimir I. Feldman. "C2H2···CO complex and its radiation-induced transformations: a building block for cold synthetic astrochemistry." Monthly Notices of the Royal Astronomical Society 506, no. 3 (2021): 3499–510. http://dx.doi.org/10.1093/mnras/stab1820.

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ABSTRACT In this work, we have examined the radiation-induced synthetic chemistry occurring in an astrochemically important C2H2–CO system at the molecular level using a matrix isolation approach. The 1:1 C2H2···CO intermolecular complex of linear structure was obtained in the solid low-temperature (5 K) noble gas matrices by deposition of the C2H2/CO/Ng (Ng = Ar, Kr, Xe) gaseous mixtures and characterized by Fourier-transform infrared spectroscopy. It was found that the X-ray radiolysis of the C2H2···CO complex resulted in formation of C3O (tricarbon monoxide), HCCCHO (propynal), c-H2C3O (cyc

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Ubertosi, F., M. Gitti, E. Torresi, F. Brighenti, and P. Grandi. "A Chandra study of Abell 795 – a sloshing cluster with an FR0 radio galaxy at its centre." Monthly Notices of the Royal Astronomical Society 503, no. 3 (2021): 4627–45. http://dx.doi.org/10.1093/mnras/stab819.

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ABSTRACT We present the first X-ray dedicated study of the galaxy cluster Abell 795 (A795) and of the Fanaroff–Riley type 0 (FR0) hosted in its brightest cluster galaxy. Using an archival 30 ks Chandra observation, we study the dynamical state and cooling properties of the intracluster medium (ICM), and we investigate whether the growth of the radio galaxy is prevented by the surrounding environment. We discover that A795 is a weakly cool-core cluster, with an observed mass deposition rate ${\lessapprox} 14$ M⊙ yr−1 in the cooling region (central ∼66 kpc). In the inner ∼30 kpc, we identify two

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Grzegorczyk, Pierre, Sudha Yadav, Florian Zanger, et al. "Fragmentation of ice particles: laboratory experiments on graupel–graupel and graupel–snowflake collisions." Atmospheric Chemistry and Physics 23, no. 20 (2023): 13505–21. http://dx.doi.org/10.5194/acp-23-13505-2023.

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Abstract. Until now, the processes involved in secondary ice production which generate high concentrations of ice crystals in clouds have been poorly understood. However, collisions that involve rimed ice particles or crystal aggregates have the potential to effectively produce secondary ice from their fragmentation. Unfortunately, there have only been a few laboratory studies on ice–ice collision so far, resulting in an inaccurate representation of this process in microphysical schemes. To address this issue, experiments were conducted at the wind tunnel laboratory of the Johannes Gutenberg U

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Kelland, M. A., J. Pomicpic, R. Ghosh, et al. "Multi-functional oilfield production chemicals: maleic-based polymers for gas hydrate and corrosion inhibition." IOP Conference Series: Materials Science and Engineering 1201, no. 1 (2021): 012081. http://dx.doi.org/10.1088/1757-899x/1201/1/012081.

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Abstract Several chemical problems can occur during the production of oil and gas through flow lines. This includes corrosion, scale deposition and gas hydrate plugging. Three separate chemicals may be needed to treat these issues. Kinetic hydrate inhibitors (KHIs) are used in cold oil or natural gas production flow lines to prevent the formation and plugging of the line with gas hydrates. They are often injected concomitantly with other production chemicals such as corrosion and scale inhibitors. KHIs are specific low molecular weight water-soluble polymers with amphiphilic groups formulated

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Tuck, Adrian F. "The Generation of Wind Velocity via Scale Invariant Gibbs Free Energy: Turbulence Drives the General Circulation." Entropy 27, no. 7 (2025): 740. https://doi.org/10.3390/e27070740.

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The mechanism for the upscale deposition of energy into the atmosphere from molecules and photons up to organized wind systems is examined. This analysis rests on the statistical multifractal analysis of airborne observations. The results show that the persistence of molecular velocity after collision in breaking the continuous translational symmetry of an equilibrated gas is causative. The symmetry breaking may be caused by excited photofragments with the associated persistence of molecular velocity after collision, interaction with condensed phase surfaces (solid or liquid), or, in a scaling

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Iannarelli, Riccardo, та Michel J. Rossi. "Heterogeneous kinetics of H<sub>2</sub>O, HNO<sub>3</sub> and HCl on HNO<sub>3</sub> hydrates (<i>α</i>-NAT, <i>β</i>-NAT, NAD) in the range 175–200 K". Atmospheric Chemistry and Physics 16, № 18 (2016): 11937–60. http://dx.doi.org/10.5194/acp-16-11937-2016.

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Abstract. Experiments on the title compounds have been performed using a multidiagnostic stirred-flow reactor (SFR) in which the gas phase as well as the condensed phase has been simultaneously investigated under stratospheric temperatures in the range 175–200 K. Wall interactions of the title compounds have been taken into account using Langmuir adsorption isotherms in order to close the mass balance between deposited and desorbed (recovered) compounds. Thin solid films at 1 µm typical thickness have been used as a proxy for atmospheric ice particles and have been deposited on a Si window of

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Zhang, Chengzhu, and Jerry Y. Harrington. "The Effects of Surface Kinetics on Crystal Growth and Homogeneous Freezing in Parcel Simulations of Cirrus." Journal of the Atmospheric Sciences 72, no. 8 (2015): 2929–46. http://dx.doi.org/10.1175/jas-d-14-0285.1.

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Abstract The uptake of water vapor excess by ice crystals is a key process regulating the supersaturation in cold clouds. Both the ice crystal number concentration and depositional growth rate control the vapor uptake rate and are sensitive to the deposition coefficient . The deposition coefficient depends on temperature and supersaturation; however, cloud models either ignore or assume a constant . In this study, the effects of on crystal growth and homogeneous freezing of haze solution drops in simulated cirrus are examined. A Lagrangian parcel model is used with a new ice growth model that

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Dlougach, E., and P. Veltri. "The impact of neutral beam parameters on current drive and neutron yield in DEMO-FNS tokamak." Journal of Instrumentation 19, no. 02 (2024): C02027. http://dx.doi.org/10.1088/1748-0221/19/02/c02027.

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Abstract DEMO-FNS (DEMO Fusion Neutron Source) will be a hybrid reactor designed to combine fusion and fission technologies. In a hybrid reactor the power is mainly produced by a fission blanket which is exposed to the neutron flux generated by confined fusion plasma used as a Fusion Neutron Source (FNS). The steady-state operation of the FNS is easier to achieve as compared to pure fusion reactors, allowing the FNS to be more compact. The DEMO-FNS will produce 40 MW of fusion power. The neutral beam injectors (NBI) are designed to provide a steady state plasma heating, rotation, fueling, curr

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Mehdi, Ghazanfar, Sara Bonuso, and Maria Grazia De Giorgi. "Effects of Nanosecond Repetitively Pulsed Discharges Timing for Aeroengines Ignition at Low Temperature Conditions by Needle-Ring Plasma Actuator." Energies 14, no. 18 (2021): 5814. http://dx.doi.org/10.3390/en14185814.

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These days, various national and international research organizations are working on the development of low NOx combustors. The present work describes the experimental and numerical characterization of flow dynamics and combustion characteristics in a rectangular burner. A ring-needle type plasma actuator was developed and driven by a high voltage nanosecond pulsed generator under atmospheric conditions. Smoke flow visualizations and Proper Orthogonal Decomposition (POD) were carried out to identify the relevant flow structures. Electrical characterization of the non-reactive flow was carried

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Agar, O. B., A. C. Alex, G. W. Kubacki, N. Zhu, and L. N. Brewer. "Corrosion Behavior of Cold Sprayed Aluminum Alloys 2024 and 7075 in an Immersed Seawater Environment." Corrosion 77, no. 12 (2021): 1354–64. http://dx.doi.org/10.5006/3802.

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This paper describes the polarization and basic pitting behavior of 2024 and 7075 aluminum alloys produced by high-pressure cold-spray deposition. While cold spray is showing great promise as a solid-state repair approach for metallic structures, the corrosion behavior of these materials still needs investigation, particularly in describing the potential galvanic interactions with the repaired substrate. Potentiodynamic testing was performed on cold-sprayed (CS) aluminum alloys 2024 and 7075, and corresponding wrought AA2024-T3 and AA7075-T651 alloys for comparison. Testing used ASTM D1141 art

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Okuno, H., M. Trinquecoste, A. Derré, M. Monthioux, and P. Delhaès. "Catalytic effects on carbon/carbon composites fabricated by a film boiling chemical vapor infiltration process." Journal of Materials Research 17, no. 8 (2002): 1904–13. http://dx.doi.org/10.1557/jmr.2002.0283.

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Chemical vapor infiltration (CVI) has been widely studied under several conditions to obtain C/C composites. A “film boiling technique” (so-called Kalamazoo), by the use of liquid precursor, based on thermal gradient CVI has been recently developed as one of the very effective techniques to increase the carbon yield and the densification rate. A small cold wall type laboratory reactor has been realized to analyze the kinetics of reactions and the deposited pyrocarbon matrix. In this study, ferrocene, as the source of catalyst, is mixed to the liquid precursor to induce a catalytic effect on th

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Liu, Zhihao, Yingpeng Zhang, Yuan Zhong, et al. "The study of microstructure evolution and deposition kinetics simulation of cold sprayed 6061Al/AZ31Mg composite coatings." Journal of Alloys and Compounds 1035 (July 2025): 181642. https://doi.org/10.1016/j.jallcom.2025.181642.

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Osipov, V. S., та A. S. Terenchenko. "Evaluation of the internal combustion engine pre-heating methods and their inﬂuence on the cold engine start performance at an ambient temperature of –40°C". Trudy NAMI, № 1 (24 березня 2022): 17–25. http://dx.doi.org/10.51187/0135-3152-2022-1-17-25.

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Introduction (statement of the problem and relevance). Starting an internal combustion engine (ICE) at negative ambient temperatures is difﬁcult for a number of reasons. A decrease in the volatility of gasoline leads to the liquid fuel deposition on the cylinder walls, as a result of which the fuel-air mixture ignition is difﬁcult or impossible. Another reason is the geometric dimensions reduction of the gaps in the plain bearings, which is a consequence of the use of materials with different thermal expansion coefﬁcients in the engine design. The high kinematic viscosity of the oil creates a

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Pouraliakbar, Hesam, Gholamreza Khalaj, Lidija Gomidželović, Mohamad-Javad Khalaj, and Mohsen Nazerfakhari. "Duplex ceramic coating produced by low temperature thermo-reactive deposition and diffusion on the cold work tool steel substrate: Thermodynamics, kinetics and modeling." Ceramics International 41, no. 8 (2015): 9350–60. http://dx.doi.org/10.1016/j.ceramint.2015.03.306.

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Boranbayeva, Laura, Galina Boiko, Andrey Sharifullin, et al. "Analysis of the Processes of Paraffin Deposition of Oil from the Kumkol Group of Fields in Kazakhstan." Processes 12, no. 6 (2024): 1052. http://dx.doi.org/10.3390/pr12061052.

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The oil pipeline transportation of highly waxy oils when it is cold is accompanied by the deposition of paraffins in the inner surface of the pipeline. This study of the initial properties of the oil; the composition, structure, and nature of the components of normal alkanes in oil; and their influence on the aggregative stability of the resulting system makes it possible to find the best solutions to optimize the conditions of oil transportation with the lowest energy costs. This study shows that, according to the content of solid paraffin (14.0–16.2%), the oils of the Kumkol group of fields

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Tamminen, Tarja, Atte Mikkelson, Matti Siika-aho, et al. "Deposition of xylan isolated from Pennisetum purpureum on fibres of Eucalyptus globulus and characterisation of the composition of the surface xylans by immunolabelling and enzymatic peeling." Holzforschung 72, no. 11 (2018): 915–22. http://dx.doi.org/10.1515/hf-2018-0002.

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AbstractAdsorption of xylan on pulp is a potential method to improve its properties, especially refinability for high quality printing and writing (P&W) paper grades. In this study, elephant grass [Pennisetum purpureum(Schumach.)] xylan was used for this purpose. The xylan was extracted using cold caustic extraction (CCE) fromP. purpureumbrown pulp, produced by the Soda-AQ process (kappa 20). Xylan resorption was accomplished during the oxygen delignification phase of eucalypt [Eucalyptus globulus(Labill.)] pulp to avoid problems induced by the colour of the lignin-contaminated deposited x

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Starikovskii, A. Yu, N. B. Anikin, I. N. Kosarev, E. I. Mintoussov, S. M. Starikovskaia, and V. P. Zhukov. "Plasma-assisted combustion." Pure and Applied Chemistry 78, no. 6 (2006): 1265–98. http://dx.doi.org/10.1351/pac200678061265.

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This paper presents an overview of experimental and numerical investigations of the nonequilibrium cold plasma generated under high overvoltage and further usage of this plasma for plasma-assisted combustion.Here, two different types of the discharge are considered: a streamer under high pressure and the so-called fast ionization wave (FIW) at low pressure.The comprehensive experimental investigation of the processes of alkane slow oxidation in mixtures with oxygen and air under nanosecond uniform discharge has been performed. The kinetics of alkane oxidation has been measured from methane to

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Varble, Adam. "Erroneous Attribution of Deep Convective Invigoration to Aerosol Concentration." Journal of the Atmospheric Sciences 75, no. 4 (2018): 1351–68. http://dx.doi.org/10.1175/jas-d-17-0217.1.

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Abstract Contiguous time–height cloud objects at the Department of Energy Atmospheric Radiation Measurement Southern Great Plains (SGP) site are matched with surface condensation nuclei (CN) concentrations and retrieved thermodynamic and kinematic vertical profiles for warm-cloud-base, cold-cloud-top systems in convectively unstable environments. Statistical analyses show that previously published conclusions that increasing CN concentrations cause a decrease in minimum cloud-top temperature (CTT) at the SGP site through the aerosol convective invigoration effect are unfounded. The CN–CTT rela

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Y., Gerasymchuk,, Adamenko, O., Lavrishchev, A., and Novoselytskiy, Y. "Determination parameters of the precipitating electrode of the electrotechnical means for cleaning air of livestock buildings from harmful gases and bacterial contamination." Mehanization and electrification of agricultural, no. 9(108) (2019): 141–48. http://dx.doi.org/10.37204/0131-2189-2019-9-17.

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Purpose. Get dependence to determine the mass of the chemical adsorbent which is contained on the rotating precipitating electrode of the electrotechnical means, taking into account the kinetics of the process of air purification of livestock buildings from harmful gases and bacterial contamination with the complex use of electrophysical and chemical methods of decontamination and air purification. Methods. Analysis of the influence of chemical adsorbent and crown discharge field on the efficiency of air purification of livestock buildings from harmful gases and bacterial contamination. Experi

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Broome, Catherine M., Alexander Röth, David J. Kuter, et al. "Inhibition of the Classical Pathway of Complement with Sutimlimab in Chronic Immune Thrombocytopenic Purpura Patients without Adequate Response to Two or More Prior Therapies." Blood 134, Supplement_1 (2019): 898. http://dx.doi.org/10.1182/blood-2019-122210.

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Introduction Immune thrombocytopenia (ITP) is characterized by platelet (plt) destruction and impaired plt production related to multiple humoral and cell-mediated processes. The heterogeneity of ITP pathogenesis is highlighted by clinical experience that shows up to 20% of patients with ITP have an inadequate response to current therapy and remain at risk of life-threatening bleeds and substantially impaired quality of life. Evidence of activation of the classical complement pathway (CP) by plt autoantibodies has long been recognized in ITP. In vitro studies showed sera from approximately 50%

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Xie, Jing, Daniel Nélias, Hélène Walter-Le Berre, Kazuhiro Ogawa, and Yuji Ichikawa. "Simulation of the Cold Spray Particle Deposition Process." Journal of Tribology 137, no. 4 (2015). http://dx.doi.org/10.1115/1.4030257.

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Cold spray is a rapidly developing coating technology for depositing materials in the solid state. In this work, the cold spray particle deposition process was simulated by modeling high-velocity impacts of spherical particles onto a flat substrate under various conditions. For the first time, we proposed the coupled Eulerian–Lagrangian (CEL) numerical approach as a means of solving the high-strain rate deformation problem. Using this approach, we observed a compressive stress region at the interface between the particles and the substrate induced by large plastic strains in the materials. Due

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Heilmann, Ralf K., and Robert M. Suter. "Kinetic Roughening of Quenched Xenon Films." MRS Proceedings 407 (1995). http://dx.doi.org/10.1557/proc-407-239.

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ABSTRACTWe investigate the growth of quenched Xe films formed by deposition onto a cold (15-35K) substrate via in situ measurements of x-ray reflectivity and diffraction. Surface roughness, film density, and crystallinity are determined as a function of Xe film thickness, substrate temperature and Xe flux in order to test for dynamic scaling behavior. Deposition of polycrystalline films with random crystallite orientations is achieved through heating of a grafoil sheet that is enclosed in the sample cell and has previously been covered with bulk Xe. At 16K the films are sufficiently quenched t

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Tan, Kun. "Analysis of spray particles entrance of Right-angle cold spray nozzle based on CFD." Mechanics and Advanced Technologies 7, no. 3 (99) (2023). http://dx.doi.org/10.20535/2521-1943.2023.7.3.292244.

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Cold spray technology is a solid-state deposition technology, and the nozzle is an important part of the cold spray system. This article proposes a right-angle nozzle. The characteristic of this nozzle is that it can change the flow direction of the gas flow inside the nozzle to realize spraying on the surface of special parts; the acceleration of particles by the right-angle nozzle with different particle entrances is studied. The results show that the outlet center velocity of the right-angle nozzle with a circular throat section is greater, the viscous boundary layer effect is better, and t

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Smith, Richard W., Feng Ying, and David J. Srolovitz. "Growth and Texture of Polycrystalline Thin Films." MRS Proceedings 403 (1995). http://dx.doi.org/10.1557/proc-403-39.

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AbstractTwo dimensional non-equilibrium molecular dynamics simulations are performed to study microstructural evolution during the growth of polycrystalline thin films. Attention is focused on the interaction between grain boundaries and voids which form during deposition, and on the development of a preferred, crystallographic texture during film growth. In an intermediate temperature regime, where the film is cold enough to allow void formation but hot enough to allow grain boundary motion, boundaries move such as to attach themselves to voids as the voids form from depressions in the film s

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Falco, Roberta, and Sara Bagherifard. "Cold Spray Additive Manufacturing: A Review of Shape Control Challenges and Solutions." Journal of Thermal Spray Technology, March 6, 2025. https://doi.org/10.1007/s11666-025-01970-0.

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Abstract Cold spray (CS) is a promising solid-state deposition method that offers several advantages over traditional thermal spray techniques. With rapid deposition, minimal thermal degradation and distortion, and unique flexibility in material selection and part size, it is an attractive option for additive manufacturing. Despite the latest steep technological advancements, a significant hindrance to the wide application of CS in this field is shape accuracy. The Gaussian-like deposit profiles characteristic of CS limit its resolution, causing waviness along the deposit, tapering, and edge l

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