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Journal articles on the topic 'Gas plasma torch'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Korzhyk, V., Wang Haichao, I. Konstantynov, et al. "THEORETICAL STUDY OF GAS DYNAMIC AND THERMAL PROCESSES OCCURRING DURING PLASMA ARC CUTTING WITH REVERSE POLARITY." Sciences of Europe, no. 142 (June 9, 2024): 67–76. https://doi.org/10.5281/zenodo.11535717.

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The work is devoted to the numerical modeling of gas-dynamic and thermal processes during plasma-arc cutting of metals at reverse polarity using air as a plasma-forming gas. Using the developed mathematical model of thermal, gas-dynamic and electromagnetic processes in electric arc plasma generated by cutting plasma torches with reverse polarity, the main characteristics of the arc plasma flow inside the working channel of the plasma torch, in the open area of the arc and in the cutting cavity are determined. It has been established that the characteristics of the arc plasma under study are si

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2

Matushkina, I. Yu, S. V. Anakhov, and Yu A. Pyckin. "Design of a new gas-dynamic stabilization system for a metal-cutting plasma torch." Journal of Physics: Conference Series 2094, no. 4 (2021): 042075. http://dx.doi.org/10.1088/1742-6596/2094/4/042075.

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Abstract The analysis of the influence of various design solutions of the gas-dynamic stabilization system in plasma torches for cutting metals on the efficiency of equalizing the velocities of gas flows along the cross-section of the gas path is carried out. It is noted that the efficiency evaluation method developed by the authors should be based on the calculation of the uniformity of the gas flow velocity distribution over the cross-section of the gas-air path of the plasma torch. A vortex stabilization system using two swirlers is proposed. The effect of improving the reliability and qual

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3

YUAN, X. Q., T. Z. ZHAO, W. K. GUO, and P. XU. "PLASMA FLOW CHARACTERISTICS INSIDE THE SUPERSONIC D.C. PLASMA TORCH." International Journal of Modern Physics E 14, no. 02 (2005): 225–38. http://dx.doi.org/10.1142/s0218301305003016.

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A magnetohydrodynamic (MHD) model, which describes supersonic plasma flow inside the torch, is presented in this paper. It is a two-dimensional model but includes the K -epsilon model of turbulence, the gas viscous effects and compressible effects. The PHOENICS software is used for solving the governing equations, i.e. the conservation equations of mass, momentum, and energy together with the equations describing the K -epsilon model of turbulence. The calculated arc voltages and gas inflow rates are consistent with the experimental results when arc current and the working gas are the same as

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4

Li, Shuangliang, and Jing Tao. "DC Arc Plasma Numerical Simulation Calculation Review." Academic Journal of Science and Technology 13, no. 1 (2024): 135–39. http://dx.doi.org/10.54097/cw6v2177.

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This study established a three-dimensional numerical model based on the Fluent software, listing the commonly used boundary conditions, physical models, and basic assumptions in the process of DC arc plasma numerical simulation. By combining multiple literature analyses, the influence of working gas flow rate, working current magnitude, degree of gas swirl, and non-swirling gas on the internal physical fields of the DC arc plasma torch was investigated. The research results indicate that the temperature, current density, plasma flow velocity, and pressure inside the plasma torch all increase w

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Kongpiboolkid, W., and R. Mongkolnavin. "Simulation of 3D vortex jets in plasma torch application." Journal of Physics: Conference Series 2145, no. 1 (2021): 012021. http://dx.doi.org/10.1088/1742-6596/2145/1/012021.

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Abstract The gas tunnel type plasma jet is an effective heat source for thermal processing applications such as plasma spraying. The key concept of gas tunnel plasma is its torch configuration, especially the role of the vortex gas flow. This is very important for the stability and energy density of the plasma jet produced. This work studied the flow of gas vortex in 3 dimensions using a finite element simulation. The simulation is based on solving partial differential equations where the incompressible Navier-Stokes equation is used as a governing equation that describes the laminar flow. The

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6

Zhang, Ju Fan, Bo Wang, and Shen Dong. "The Design of an Atmospheric Pressure Plasma Torch Used for Polishing Ultra-Smooth Surfaces." Key Engineering Materials 364-366 (December 2007): 340–45. http://dx.doi.org/10.4028/www.scientific.net/kem.364-366.340.

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As there are always certain defects on the final surface of large-scale lightweight mirrors, which are formed in traditional mechanical polishing process, such as microcracks, lattice disturbances, plastic deformation, and so on, an atmospheric pressure plasma polishing method is a good solution to this problem. As a key component, the design of the capacitance coupling atmospheric pressure radio-frequency plasma torch is introduced. The designed torch uses water cooled coaxial aluminium electrodes with special treatment to avoid arcing between them. In normal machining process, the mixture of

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7

Gulyaev, I. P., V. I. Kuzmin, M. P. Golubev, P. A. Tyryshkin, and A. V. Dolmatov. "VISUALIZATION OF THE gas-dynamic STRUCTURE OF PLASMA FLOWS OF A PNK-50 plasma torchusing THE SHADOW METHOD." Yugra State University Bulletin 14, no. 4 (2018): 61–68. http://dx.doi.org/10.17816/byusu20180461-68.

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The paper presents the study of the gas-dynamic structure of air plasma flows produced by the PNK-50 spray torch using the shadow (schlieren) method. The operation of the plasma torch was studied in three different configurations, differing, among other things, by the diameter of the output section of the channel: 6, 8, 10 mm. The subsonic and supersonic modes of operation of the plasma torch were investigated in the range of plasma-forming air flow 1.4-10.5 g / s and arc current range 140-230 A.In all typical modes of operation of the plasma torch, the flow has a developed turbulent structure

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8

Gerasimov, Alexander, Alexander Kirpichnikov, and Leonid Rachevsky. "Determination of gas temperature in the plasmatron channel according to the known distribution of electronic temperature." Thermal Science 17, no. 4 (2013): 1251–54. http://dx.doi.org/10.2298/tsci1304251g.

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An analytical method to calculate the temperature distribution of heavy particles in the channel of the plasma torch on the known distribution of the electronic temperature has been proposed. The results can be useful for a number of model calculations in determining the most effective conditions of gas blowing through the plasma torch with the purpose of heating the heavy component. This approach allows us to understand full details about the heating of cold gas, inpouring the plasma, and to estimate correctly the distribution of the gas temperature inside the channel.

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9

Punjabi, Sangeeta, Dilip Barve, Narendra Joshi, et al. "Computational Fluid Dynamics (CFD) Simulations and Experimental Measurements in an Inductively-Coupled Plasma Generator Operating at Atmospheric Pressure: Performance Analysis and Parametric Study." Processes 7, no. 3 (2019): 133. http://dx.doi.org/10.3390/pr7030133.

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In this article, electrical characteristics of a high-power inductively-coupled plasma (ICP) torch operating at 3 MHz are determined by direct measurement of radio-frequency (RF) current and voltage together with energy balance in the system. The variation of impedance with two parameters, namely the input power and the sheath gas flow rate for a 50 kW ICP is studied. The ICP torch system is operated at near atmospheric pressure with argon as plasma gas. It is observed that the plasma resistance increases with an increase in the RF-power. Further, the torch inductance decreases with an increas

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10

Gharaeinia, M., S. Saviz, and A. H. Sari. "Influence of the inlet gas velocity components on the survival of the vertex of gas in the plasma torch." Journal of Theoretical and Applied Physics 14, no. 1 (2019): 1–10. http://dx.doi.org/10.1007/s40094-019-00357-1.

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Abstract The vortex gas injection into plasma torch is considered as a method for reducing electrodes erosion. In order to investigate the effects of vortex gas injection on plasma structure, as well as the effect of gas viscosity on the rate of rotation, a three-dimensional nonequilibrium and time-dependent non-transferred DC plasma torch model has been simulated. Viewing the general characteristics of the plasma shows that the model works well. The results have shown that if the components of the inlet gas velocity are not properly selected, it is possible that the rotary effects of the gas

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11

Marinova, Plamena, Evgenia Benova, Yana Topalova, et al. "Effects of Surface-Wave-Sustained Argon Plasma Torch Interaction with Liquids." Processes 11, no. 12 (2023): 3313. http://dx.doi.org/10.3390/pr11123313.

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In this paper, an investigation of the interaction of a surface-wave-sustained argon plasma torch with liquids is presented. The plasma is produced by an electromagnetic wave traveling along the plasma–dielectric interface, and at the same time, the plasma is a part of this waveguide structure. Because the interaction of the plasma torch with water (liquid) results in modifications of the properties of both the treated water and the plasma itself, a detailed study of the effects in both media is required. The results of the experimental investigation of a surface-wave-sustained argon plasma to

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12

Fielden, P. R., M. Jiang, and R. D. Snook. "A Laminar Flow Microwave Plasma Detector for Gas Chromatography." Applied Spectroscopy 43, no. 8 (1989): 1444–49. http://dx.doi.org/10.1366/0003702894204308.

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A laminar flow torch for the support of a helium microwave plasma is described. The microwave-induced plasma (MIP) and associated spectrometer are used as an element-specific detector for gas chromatography. The development, optimization, and characterization of the torch and plasma are described with the use of carbon, hydrogen, and chlorine as model elements. Finally, the application of the MIP as a detector for gas chromatography is tested with a mixture of chlorinated and other solvents, where detector selectivity is demonstrated through observation of the carbon and chlorine atomic emissi

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13

Zherlitsyn, Alexey G., Vladimir Shiyan, and Pavel Demchenko. "Microwave plasma torch for processing hydrocarbon gases." Resource-Efficient Technologies, no. 1 (June 30, 2016): 11–14. http://dx.doi.org/10.18799/24056529/2016/1/33.

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We designed and developed an ultrahigh-frequency (microwave) plasma torch with a combined (nitrogen, methane) plasma-forming environment, and microwave output of up to 2 kW, continuously. We demonstrate the possibility of using it in order to process natural and associated petroleum (APG) gas into valuable products (hydrogen and carbon nanomaterial CNM) with up to 70% efficiency. Based on the developed microwave plasma torch, we developed an apparatus capable of converting hydrocarbon feedstock at a capacity of 50 g/h yielding CNM and hydrogen of up to 70 vol. %. In its mobile small-tonnage ve

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14

Elaissi, Samira, and Norah A. M. Alsaif. "Modeling and Performance Analysis of Municipal Solid Waste Treatment in Plasma Torch Reactor." Symmetry 15, no. 3 (2023): 692. http://dx.doi.org/10.3390/sym15030692.

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Thermal plasma has emerged as a technology with tremendous promise for municipal wastes that should be disposed of sustainably. A numerical simulation of a symmetric turbulent plasma jet from a thermal air plasma torch was developed using COMSOL Multiphysics®5.4 engineering simulation software. The velocities, temperature, arc root motion, and joule heating of the plasma jet were examined under the impact of the gas mass flow rate and current. Moreover, the electrical power required for the municipal solid waste (MSW) processing was estimated. The enthalpy and the effectiveness of the plasma t

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15

Anakhov, S. V., B. N. Guzanov, A. V. Matushkin, N. B. Pugacheva, and Ya A. Pykin. "Influence of plasma torch design on cutting quality during precision air-plasma cutting of metal." Izvestiya. Ferrous Metallurgy 63, no. 2 (2020): 155–62. http://dx.doi.org/10.17073/0368-0797-2020-2-155-162.

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Optical interferometry and metallographic analysis were used to study structure of cutting seams obtained after 09G2S steel cutting by PMVR-5 plasma torch. These plasma torches have a number of design features in the system of gas-dynamic stabilization of plasma arc. It is shown that application of new plasma torch allows obtaining higher quality of cutting 09G2S steel of medium thickness with high productivity and lower energy costs. Metallographic analysis has shown that qualitative composition of the cut surface structure is almost the same, so priority criteria for comparative quality anal

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16

Li, Limin, Chao Liu, Xuming Zhang, et al. "Plasma-target surface interaction during non-equilibrium plasma irradiation at atmospheric pressure: Generation of dusty plasma." Laser and Particle Beams 32, no. 1 (2013): 69–78. http://dx.doi.org/10.1017/s0263034613000888.

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AbstractThe remaining challenges, developing the relativistic electron beam sources, stimulate the investigations of cathode materials. Carbon-fiber-aluminum composite is the most appropriate cathode materials to construct the robust relativistic electron beam sources. Carbon-fiber-aluminum composite is treated by a non-equilibrium atmospheric plasma torch with a copper electrode based on high-voltage gas discharge. The axial and radial distributions of the plasma torch temperature are measured to determine the optimal treatment temperature and location. Copper-oxide particles with diameters o

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17

Wang, Song Bai, Chang Ming Cheng, Wei Lan, Xian Hui Zhang, Dong Pin Liu, and Si Ze Yang. "Experimental Study of Treating Discarded Circuit Boards by Using the Converging - Extended Anode Channel Plasma Torch." Advanced Materials Research 516-517 (May 2012): 1854–60. http://dx.doi.org/10.4028/www.scientific.net/amr.516-517.1854.

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In this paper, some discarded circuit boards in the plasma incinerator were incinerated by the converging - extended anode channel plasma torch, whose work principle and composition was described, and two experimental results were described, finally, the percentage of four major exhaust gas (CO, NO, SO2, O2) was reported, showing a good prospect on treating electronic waste with using the plasma torch.

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18

Devoino, O. G., A. V. Gorbunov, A. S. Volod’ko, O. K. Yatskevich, and V. A. Gorbunova. "Characterization of opportunity for upgrading of the system based on arc plasma torch for thermal spaying of ceramic materials, by means of use of fuel vortex intensifier. Part II. Thermal engineering estimation and experimental testing." Proceedings of the National Academy of Sciences of Belarus, Physical-Technical Series 67, no. 1 (2022): 7–16. http://dx.doi.org/10.29235/1561-8358-2022-67-1-7-16.

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The main trends in the field of improving thermal spraying processes for ceramic coatings formation is, along with enhancement of coating properties, also the reducing the energy consumption for the process. In this regard, one of the important directions for improving these technologies with plasma is the development of their new versions, using the principle of adding inexpensive fuel-oxidizing mixtures based on hydrocarbons (natural gas, liquefied gas) with air. This type of plasma-fuel type of spraying will be promising for application at the present time, first of all, in order to obtain

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19

Essiptchouk, Alexei. "Enhancing Plasma Torch Efficiency: Wet Steam Cooling." PLASMA PHYSICS AND TECHNOLOGY 11, no. 3 (2024): 67–71. https://doi.org/10.14311/ppt.2024.3.67.

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The efficient use of wet steam for plasma torch cooling and water plasma generation is important for reliable plasma generator design. Wet steam, due to phase transformation capability, improves heat removal at lower gas flow rates if compared to liquid water. To evaluate the wet steam cooling potential, a numerical model is proposed, incorporating governing equations (mass, momentum, energy, current, and Ampere's law) are expressed in the cylindrical coordinate system. The model is applied to investigate the wet steam cooling feasibility for the anode of a direct current plasma torch with non

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20

Siddanathi, Sai Likitha, Lars-Göran Westerberg, Hans O. Åkerstedt, Per Gren, Henrik Wiinikka, and Alexey Sepman. "Computational Analysis of Flow Separation in Non-Transferred Plasma Torch: Causes, Impacts and Control Methods." Fluids 10, no. 2 (2025): 47. https://doi.org/10.3390/fluids10020047.

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In a non-transferred plasma torch, the working gas becomes ionized and forms plasma as it interacts with the electric arc at the cathode tip. However, in certain cathode shapes, particularly flat ones, and under specific conditions, the gas flow can separate at the cathode tip, forming a vortex region. While this flow separation is influenced by geometric factors, it occurs in the critical zone where plasma is generated. Understanding the causes of this separation is essential, as it may significantly impact torch performance. If the separation proves detrimental, it is important to identify w

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21

Guo, Xiaoman, Sina Alavi, and Javad Mostaghimi. "Analytical performance of the Conical torch in axially viewed inductively coupled plasma optical emission spectroscopy." Journal of Analytical Atomic Spectrometry 34, no. 10 (2019): 2126–35. http://dx.doi.org/10.1039/c9ja00264b.

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22

Lutsenko, Yury, and Ivan Miskun. "Determination of Characteristics of the Torch Discharge Plasma Burning in a Mixture of Atomic and Molecular Gases." Advanced Materials Research 1084 (January 2015): 183–86. http://dx.doi.org/10.4028/www.scientific.net/amr.1084.183.

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The present article shows the results of temperature measurements of electrons and gas of the torch discharge burning in the mixture of argon and air. The study established the insignificant effect of added air on the characteristics of argon plasma and evaluated the conductivity of the plasma torch discharge burning in the mixture of argon and air.

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23

Mbwebwe, Justin, Andrei Kolesnikov, Jaco Van Der Walt, and Hertzog Bissett. "Validation of computational fluid dynamics method through experimental investigation of the plasma spraying process." MATEC Web of Conferences 370 (2022): 09002. http://dx.doi.org/10.1051/matecconf/202237009002.

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Numerical modelling has emerged as a powerful predictive tool to enhance plasma sprayed coatings quality and process efficiency. In the present work, a comprehensive Computational Fluid Dynamics model of a gas heating inside a direct current arc plasma torch, is developed, using the simulation software Ansys Fluent. It is therefore sought to test its accuracy and limitations by comparing its predictions to actual data generated in the South African Nuclear Energy Corporation plasma spraying laboratory. In this regards, titanium powder of respective size distributions, 0-63 μm, and 63-75 μm, is

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24

Han, Hai Ling, and Qing Lin Wang. "Three-Dimensional Arc Modeling inside Non-Transferred Plasma Torch." Applied Mechanics and Materials 217-219 (November 2012): 1407–10. http://dx.doi.org/10.4028/www.scientific.net/amm.217-219.1407.

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Numerical models have been developed to study the characteristics of an arc inside the non-transferred plasma torch. A few of them have considered the diameter of anode spot and arc length in given current and gas flow rate. In this work, a three-dimensional model is developed to simulate power and entropy in the given current and diameter of anode spot. Different combinations of diameter of anode spot and arc length can produce torch power that corresponds to given current and gas flow rate. From the possible combinations of the diameter of anode spot and arc length predicted for given curren

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25

Rayson, Gary D., and Daniel Yang Shen. "Description and Characterization of a Linear-Flow Outer Gas Flow Torch for Inductively Coupled Plasma Emission Spectroscopy." Applied Spectroscopy 46, no. 8 (1992): 1245–50. http://dx.doi.org/10.1366/0003702924123999.

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An inductively coupled plasma torch has been developed which utilizes linear coolant gas flows and is operated at reduced applied power levels and argon gas consumption rates. The linear flow torch (LiFT) is constructed by the addition of a machined insert between the outer and intermediate tubing of a conventional tangential flow torch (TaFT). This LiFT configuration has been demonstrated to be capable of providing improved detection limits, in comparison to a TaFT, at conditions of lower power and gas flow. Under those conditions the LiFT was also demonstrated to produce less severe interfer

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26

Koshlakov, Vladimir, Sergei Rebrov, Andrey Golikov, and Ivan Fedorov. "Resource characteristics of the alternating current plasma torch "Zvezda"." Applied Physics, no. 4 (September 23, 2021): 32–39. http://dx.doi.org/10.51368/1996-0948-2021-4-32-39.

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The article presents the results of the study of material entrainment (erosion) of the most heatstressed nodes of the three-phase alternating current plasma torch "Zvezda" of megawatt power: electrodes and confusers. The data on entrainment were obtained by weighing the studied nodes after their cycles of operation at fixed modes. Air was used as the working fluid. The operating modes of the plasma torch varied in the ranges of arc power 0.5–1.2 MW, cur-rents 160–400 A, gas flow 70–170 g/s. When using different output nozzles, the pressure in the plasma torch varied from 0.2 to 1.65 MPa. The i

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Essiptchouk, Alexei M., and Gilberto Petraconi Filho. "Plasma Chemical Reactor for Hydrogen Production." Advances in Science and Technology 93 (October 2014): 96–101. http://dx.doi.org/10.4028/www.scientific.net/ast.93.96.

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The process of carbon dioxide reforming of hydrocarbon feedstock (like natural gas, coal, petroleum coke, residual oil, glycerine, etc) for hydrogen production has attracted great attention from both environmental and industrial perspectives. The plasma chemical reactor for study the CO2 reforming of hydrocarbon gaseous feedstock is presented. The reactor consists of a DC plasma torch coupled to a compact quenching chamber. The linear plasma torch operates with a reverse vortex flow and hollow blind-end cathode for enhancing the thermal efficiency and enthalpy of the plasma jet. The quenching

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28

Оrynbasar, M. N. "THE CLEAN COMBUSTION OF SOLID FUEL USING A PLASMA-COAL BURNER." ГОРЕНИЕ И ПЛАЗМОХИМИЯ 20, no. 1 (2022): 83–91. http://dx.doi.org/10.18321/cpc484.

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Solid fuels have a great chance to take a leading position in the energy market in the future from an environmental and energy point of view. The development of science and technology makes it possible to use coal with minimal harmful emissions. Also, looking at a sufficient supply for the coming years can preserve the energy balance around the world. This type of solid fuel is the primary source of thermal power plants and can maintain a long-term stable price. To burn low-reactive fuels (coal), highly reactive fuels (fuel oil or natural gas) are used, leading to various environmental and eco

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29

Hussain, Ali A.-K. "Electrical, thermal and optical characteristics of plasma torch." Iraqi Journal of Physics (IJP) 13, no. 27 (2019): 151–56. http://dx.doi.org/10.30723/ijp.v13i27.273.

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Non thermal argon plasma needle at atmospheric pressure was constructed. The experimental set up was based on simple and low cost electric components that generate electrical field sufficiently high at the electrodes to ionize various gases which flow at atmospheric pressure. A high AC power supply was used with 9.6kV peak to peak and 33kHz frequency. The plasma was generated using two electrodes. The voltage and current discharge waveform were measured. The temperature of Ar gas plasma jet at different gas flow rate and distances from the plasma electrode was also recorded. It was found that

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30

Siregar, Yulianta, Yasunori Tanaka, Tatsuo Ishijima, and Yoshihiko Uesugi. "Influence of sheath gas flow rate in Ar induction thermal plasma with Ti powder injection on the plasma temperature by numerical calculation." MATEC Web of Conferences 218 (2018): 04030. http://dx.doi.org/10.1051/matecconf/201821804030.

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Numerical calculation was conducted to study the gas flow fields and temperature distribution in Ar inductively couple thermal plasma (ICTP) with titanium (Ti) powder injection. Influence of sheath gas flow rates at 90 L/min, 80 L/min and 70 L/min was investigated on the thermal plasma temperature in the torch. Results indicated that higher sheath gas flow rate raises the axial temperature and gas flow velocity in the thermal plasma

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Izuwan Samion, Muhammad Fahmi, Nur Ziana Norizat, and Ahmad Redza Ahmad Mokhtar. "Flow study in structure of the plasma torch for microwave plasma spray." Journal of Modern Manufacturing Systems and Technology 4, no. 2 (2020): 56–60. http://dx.doi.org/10.15282/jmmst.v4i2.5251.

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Microwave oven induced plasma method is a novel application of microwave oven to generate plasma for coating process. It uses 2.45 GHz microwave power and only 0.8 kW input power to produce the plasma which capable of spraying all materials that are considered sprayable. However, the research regarding this microwave plasma spray are more to be discovered. Suitable structure of plasma torch is needed for microwave plasma spray that can produce laminar flow to produce desire plasma for coating application. Therefore, this paper will discuss about the suitable structure of plasma torch needed fo

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Bruce, Mark L., and Joseph A. Caruso. "The Laminar Flow Torch for Gas Chromatographic He Microwave Plasma Detection of Pyrethroids and Dioxins." Applied Spectroscopy 39, no. 6 (1985): 942–49. http://dx.doi.org/10.1366/0003702854249655.

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A new laminar flow, microwave-induced plasma torch has been evaluated for its use in gas chromatography. Data were collected through a computer-controlled background-correcting polychromator system. A 0.5-mm-i.d. open quartz tube, the tangential flow torch, and the laminar flow torch were used for discharge containment and were compared. The chromatographic and spectroscopic data were used to determine the partial empirical formulas of pyrethroids and dioxins. The laminar flow torch showed improvements over both the 0.5-mm open tube and the tangential flow torch. The typical errors from the tr

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33

Inaba, Tsuginori, Yoshimoto Watanabe, Takayuki Ishida, and Masao Endo. "Effect of Axial Gas Flow on Torch Plasma Characteristics." IEEJ Transactions on Fundamentals and Materials 118, no. 9 (1998): 979–85. http://dx.doi.org/10.1541/ieejfms1990.118.9_979.

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34

Gadonna, Katell, Oliviez Leroy, Philippe Leprince, Luis Lemos Alves, and Cazoline Boisse-Laporte. "Study of Gas Heating by a Microwave Plasma Torch." Journal of Modern Physics 03, no. 10 (2012): 1603–15. http://dx.doi.org/10.4236/jmp.2012.330198.

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35

Arata, Yoshiaki, Akira Kobayashi, and Yasuhiro Habara. "Basic Characteristics of Gas Tunnel Type Plasma Jet Torch." Japanese Journal of Applied Physics 25, Part 1, No. 11 (1986): 1697–701. http://dx.doi.org/10.1143/jjap.25.1697.

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36

Hrabovsky, M., V. Kopeckykopecky, V. Sember, T. Kavka, O. Chumak, and M. Konrad. "Properties of Hybrid Water/Gas DC Arc Plasma Torch." IEEE Transactions on Plasma Science 34, no. 4 (2006): 1566–75. http://dx.doi.org/10.1109/tps.2006.878365.

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37

Sintsov S.V., Vodopyanov A.V., Stepanov A.N., et al. "Peculiarities of the formation of a filamentary structure of a microwave discharge in an argon flow." Technical Physics 68, no. 1 (2023): 91. http://dx.doi.org/10.21883/tp.2023.01.55539.226-22.

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This paper presents the results of an experimental study of the spatial structure of a microwave discharge maintained in an argon flow by gyrotron radiation in a continuous mode with a frequency of 24 GHz at atmospheric pressure. In the structure of the plasma plume, stationary filamentary channels are observed, elongated along the direction of the argon flow, regardless of the orientation of the external electric field of the wave, surrounded by a diffusion halo. Measurements of the electron density, vibrational and rotational temperatures of gas molecules in plasma filaments have been carrie

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38

Aldeeb, Mustafa A., Sharif Abu Darda, Vahid Damideh, Isaac Hassen, and Hossam A. Gabbar. "Analysis of Essential Features and Optimal Operational Parameters of an RF-ICP Torch for Waste Treatment Applications." Recycling 9, no. 1 (2024): 20. http://dx.doi.org/10.3390/recycling9010020.

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Recently, plasma-based pyrolysis has gained increasing prominence as a technology in response to the growing challenges in waste disposal and the recognition of opportunities to generate valuable by-products. The efficiency of the pyrolysis process is intricately tied to the characteristics of the plasma involved, particularly the effective electron temperature (Teff) and plasma density (ne). This study aimed to conduct a comprehensive examination of the essential features and optimal operational parameters of a developed RF-ICP torch specifically designed for small-scale municipal solid waste

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Li, Shou-Zhe, Yu-Long Niu, Shu-Li Cao, Jiao Zhang, Jialiang Zhang, and Xuechen Li. "The effect of plasma discharge on methane diffusion combustion in air assisted by an atmospheric pressure microwave plasma torch." Journal of Physics D: Applied Physics 55, no. 23 (2022): 235203. http://dx.doi.org/10.1088/1361-6463/ac50cb.

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Abstract An atmospheric pressure air microwave plasma torch is employed to assist methane diffusion combustions using a combination of a combustor and burner. Experimentally, the effect of the air microwave plasma on combustion is investigated with respect to the flame morphology and the variation of gas components in the exhaust with the fuel equivalence ratio φ or the methane flow rate by comparing plasma-assisted combustion (PAC) and natural combustion (NC) without plasma application. The combustion degree of CH4 in PACs is found to be much enhanced in rich fuel combustion than in NC in bot

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Stanislav, Petrov, Bondarenko Serhii, and Sato Koichi. "Consideration of the possibility of large-scale plasma-chemical production of nanosilicon for lithium-ion batteries." Technology audit and production reserves 3, no. 3(65) (2022): 6–14. https://doi.org/10.15587/2706-5448.2022.259066.

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<em>The object of research is the process of obtaining silicon nanomaterials for lithium-ion batteries of energy storage devices, and the subject of research is the technology of gas-phase plasma-chemical synthesis for the production of Si-nanoparticles.</em> <em>In the course of the study, numerical simulation methods were used, which made it possible to determine the parameters of temperature fields, velocities and concentrations. To study the processes of synthesis of nanopowders, a plasma reactor with an electric arc plasma torch of a linear scheme and using an argon-hydrogen mixture as a

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Mbwebwe, KJ, A. Kolesnikov, IJ Van der Walt, and H. Bissett. "Computational fluid dynamics evaluation of conditions before impact of particles in plasma spraying process." Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie 40, no. 1 (2022): 16–21. http://dx.doi.org/10.36303/satnt.2021cosaami.04.

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Plasma Spraying is one of the most sophisticated and versatile thermal spray techniques. In Plasma Spraying, powdered material is injected into a plasma jet, which is generated from a plasma torch. Upon contact with the plasma jet, the particles are melted and propelled forward onto a substrate to form an adherent coating which modifies the properties of the substrate. The modifications to the substrate can, for example, increase its resistance to other extreme operating conditions such as wear, abrasion, and corrosion. However, the phenomena governing the formation of the plasma jet inside th

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Korolev, Yury D., Oleg B. Frants, Nikolay V. Landl, et al. "Plasma-Assisted Combustion System Based on Nonsteady-State Gas-Discharge Plasma Torch." IEEE Transactions on Plasma Science 37, no. 12 (2009): 2314–20. http://dx.doi.org/10.1109/tps.2009.2034163.

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Kavka, T., J. Matějíček, P. Ctibor, A. Mašláni, and M. Hrabovský. "Plasma Spraying of Copper by Hybrid Water-Gas DC Arc Plasma Torch." Journal of Thermal Spray Technology 20, no. 4 (2011): 760–74. http://dx.doi.org/10.1007/s11666-011-9633-1.

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Siddanathi, S. L., L. G. Westerberg, H. O. Åkerstedt, H. Wiinikka, and A. Sepman. "Computational modeling and temperature measurements using emission spectroscopy on a non-transferred plasma torch." AIP Advances 13, no. 2 (2023): 025019. http://dx.doi.org/10.1063/5.0129653.

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A non-transferred plasma torch is a device used to generate a steady thermal plasma jet. Plasma torches have the potential to replace fossil fuel burners used as heat sources in the process industry. Today, however, the available plasma torches are of small scale compared to the power used in the burners in the process industry. In order to understand the effects of large scales on the plasma flow dynamics, it is essential to understand the operation of the plasma torch under different operating conditions and for different geometries. In this study, the analysis of a non-transferred plasma to

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Wibawa, I. Wayan Suma, I. Komang Kantun, I. Ketut Suherman, Risa Nurin Baiti, and I. Wayan Suirya. "Perancangan mekanisme rel torch plasma cutting 1 (satu) axis." Journal of Applied Mechanical Engineering and Green Technology 3, no. 1 (2022): 8–12. http://dx.doi.org/10.31940/jametech.v3i1.8-12.

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Plasma cutting is a method of cutting metal, especially steel, with relatively low cost and effectiveness, with satisfactory results. Where in the cut, it is enough to need a plasma cutting machine/inverter that is quite affordable, widely available in the market, and simple tools, an air compressor (no special oxygen/gas needed as in gas/oxygen and acetylene/LPG cutting), a power source, the material being cut and the cutting process can be carried out. How to use plasma cutting is relatively easy, namely by setting the machine and then directing the plasma torch to the cutting plane as neede

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Park, Dong-Kyoo, Soo-Nam Park, Hyun-Ji Kim, Hyo-Sik Kim, Ji-Hyeon Kim, and Jae-Hong Ryu. "Research on the Production of Turquoise Hydrogen from Methane (CH4) through Plasma Reaction." Energies 17, no. 2 (2024): 484. http://dx.doi.org/10.3390/en17020484.

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Turquoise hydrogen is produced through a process of separating carbon into solid carbon based on fossil fuels and refers to hydrogen that does not produce carbon dioxide. In this study, the characteristics of turquoise hydrogen production through a methane thermal cracking reaction using an arc plasma torch were investigated. The plasma torch operated stably under high voltage and transport gas flow conditions. The composition of the gas generated from the methane plasma reaction was analyzed using an online IR gas analyzer and GC-FID. The experimental results show that the hydrogen yield decr

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Antoš, Jakub, Petra Šulcová, Kateřina Lencová, et al. "LOCAL MECHANICAL PROPERTIES OF ATMOSPHERIC SPRAYED MOLYBDENUM COATINGS DEPOSITED WITH CASCADED PLASMA TORCH." Acta Polytechnica CTU Proceedings 27 (June 11, 2020): 32–36. http://dx.doi.org/10.14311/app.2020.27.0032.

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Increasing interest for industrial use of thermally sprayed coatings leads to development in most thermal spraying technologies, including atmospheric plasma spraying (APS). The latest cascaded torch SinplexPro from Oerlikon Metco incorporates the efficiency advantages of cascaded arc technology into a single-cathode spray gun. It leads to more stable plasma arc across a wide range of gas flows, mixtures and pressures and also highly increases powder throughput. Thermal sprayed molybdenum coatings are widely used for improving wear resistance and sliding properties in many mechanical applicati

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Shavelkina, Marina B., Ravil Kh Amirov, Tatyana I. Borodina, Viktor I. Kiselev, Tatiana B. Shatalova, and Kamille S. Rabadanov. "FORMATION OF NANO STRUCTURES IN RESULT OF HOMOGENOUS NUCLEATION OF CARBON OBTAINED IN THERMAL PLASMA UNDER ATMOSPHERIC PRESSURE." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENIY KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 59, no. 8 (2018): 27. http://dx.doi.org/10.6060/tcct.20165908.34y.

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Thermal plasma processing of carbon sources using a plasma jet with high heat capacity is one of the most promising methods for the synthesis of new materials. This paper describes the low-temperature deposition of carbon nanomaterials by remote plasma-enhanced chemical vapor deposition (PECVD) in the absence of catalysts. The remote PECVD process differs from conventional and direct PECVD process in two ways: (a) only a subset of the process reactants and/or diluents are directly plasma excited; and (b) thin film deposition takes place on a substrate that is outside of the plasma glow region.

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Šuopys, Airingas, Viktorija Grigaitienė, Liutauras Marcinauskas, Romualdas Kėželis, Rolandas Uscila, and Mindaugas Aikas. "Influence of Plasma Torch Power on the Plasma Jet Properties and Microstructure of Alumina Coatings." Coatings 12, no. 7 (2022): 934. http://dx.doi.org/10.3390/coatings12070934.

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In this study, alumina coatings were formed using atmospheric plasma spraying, increasing the torch power from 29.4 to 45.1 kW. The surface morphology of the coatings was determined using scanning electron microscopy; the elemental composition was examined using energy-dispersive X-ray spectroscopy (EDS); phase composition was investigated using X-ray diffraction; and surface roughness was determined using a profilometer. The steel surface temperature was measured using a type-K thermocouple, and the plasma jet temperature, at a distance of 70 mm, using a type-B thermocouple. Alumina particle

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Yan, Xiaomei, Tomokazu Tanaka, and Hiroshi Kawaguchi. "Reduced-Pressure Inductively Coupled Plasma Mass Spectrometry for Nonmetallic Elements." Applied Spectroscopy 50, no. 2 (1996): 182–87. http://dx.doi.org/10.1366/0003702963906582.

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A reduced-pressure argon inductively coupled plasma (ICP) is interfaced to a mass spectrometer to evaluate its possibility of increasing the sensitivity of nonmetallic elements. An electrostatically shielded water-cooled torch is used for the investigation of the secondary discharge at the sampling orifice. Iodine vapor is continuously introduced into the torch as an analyte by using a peristaltic pump. The effects of plasma operating parameters such as gas flow rate, pressure, and power on the intensities of background and iodine ions are studied. It is shown that when the pressure is less th

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