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Research on Characteristic of Double Glow Discharge Plasma Surface Alloying Process

Gao Yuan,Xu Jinyong,Gao Qing,An Jinping,Xu Zhong

Strategic Study of CAE 2008, Volume 10, Issue 2,   Pages 26-30

Abstract:

The principle, Discharge mode, alloying process and research works ofdouble glow discharge plasma surface allloying process are introduced particularly in the paper.The technology is fit for high melting point metal surface alloying and surface alloying in surface of

Keywords： double glow discharge plasma surface alloying process     high melting point metal     hollow cathode effect    

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Development of Plasma Surface Metallurgy Technology

Xu Zhong

Strategic Study of CAE 2002, Volume 4, Issue 2,   Pages 36-41

Abstract:

The plasma surface metallurgy technology is a method of the surface metallurgy by using low temperatureplasma produced by glow or arc discharge.The double glow surface alloying process, which developed based on the plasma nitriding, is a kind ofthe plasma surface metallurgy technology.Recently the double glow surface alloying process has been applied to titanium and its alloys.

Keywords： plasma     plasma surface metallurgy technology     double glow surface alloying process    

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New Development of Double Glow Plasma Surface Metallurgy Technology

Xu Zhong,Zhang Gaohui,Zhang Pingze,Zhang Yanmei,Chi Chengzhong,Yuan Qinglong

Strategic Study of CAE 2005, Volume 7, Issue 6,   Pages 73-78

Abstract:

This paper summarises some new development of the double glow plasma surface metallurgy technologyCo - W - Mo - Fe age-hardened high speed steel and high Cr alloy have been formed on the surface of carbonTi - Cu wear-resistant alloy was also produced on the surface of pure copper.The experimental results indicate that the double glow plasma surface metallurgy is an advanced and powerfulmethod for surface alloying.

Keywords： surface metallurgy     double glow plasma surface alloying     burn resistant titanium alloy     hydrogen-free carburizing    

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Effect of glow discharge plasma on rhodium-based catalyst for oxygenates synthesis

HUANG Lihong, CHU Wei, XU Junqiang, HONG Jingping, YI Min

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 1,   Pages 16-19 doi: 10.1007/s11705-007-0004-x

Abstract: Rhodium-based catalysts were prepared by impregnation, treated with glow discharge plasma, characterizedBased on the characterization results, plasma treatment endowed the samples with smaller particle size, higher dispersion of active components, and an enrichment of active components on the surface as wellIn catalytic tests, the catalytic activity for CO hydrogenation over the samples treated by plasma was
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Kinetic Monte Carlo simulations of plasma-surface reactions on heterogeneous surfaces

Daniil Marinov

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 4,   Pages 815-822 doi: 10.1007/s11705-019-1837-9

Abstract: Plasma-surface interactions are complex and relatively poorly understood.performed over the last decade by several groups prove that interactions of reactive species with relevant plasma-facing

Keywords： plasma-surface interaction     kinetic Monte Carlo     plasma nano technology    

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Plasma-assisted oxidation of benzoic acid

Anna Khlyustova, Nikolay Sirotkin

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 4,   Pages 513-521 doi: 10.1007/s11705-019-1825-0

Abstract: Plasma-assisted oxidation of organic compounds is one of the developing technologies for wastewater treatmentPlasmas effectively accelerate degradation processes due to plasma generated reactive species and ultra-violetOxidation of benzoic acid in aqueous solutions by the atmospheric pressure glow discharge and underwaterDihydroxyl derivatives were formed only by glow discharge action.

Keywords： atmospheric pressure glow discharge     underwater diaphragm discharge     oxidation     benzoic acid     hydroxyl radical    

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New Evolve of Plasma Alloying on Titanium Alloys Surface

Zhang Gaohui,Xu Zhong,Zhang Pingze,Ge Hongliang,Cui Yujian,Wen Tingdun,Pan Junde

Strategic Study of CAE 2007, Volume 9, Issue 11,   Pages 163-166

Abstract: text-align: justify;">Aimed at improving wear, corrosion resistance and enhancing fire retardance, several plasmasurface treating methods on titanium alloys had been presented, which included add-arc glow hydrogen-freecarburizing plasma depositing on titanium alloy, double glow plasma hydrogen-free carburizing on titaniumalloy, double glow Mo diffusing,  double glow Cr diffusing, double glow Cu diffusing.The results showed that gradient layer had formed on the titanium alloys surface, that was of great significance

Keywords： titanium alloy     hydrogen-free carburizing     resistant friction     burn-resistant    

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Characterisation of a microwave induced plasma torch for glass surface modification

Adam BENNETT, Nan YU, Fengzhou FANG, Marco CASTELLI, Guoda CHEN, Alessio BALLERI, Takuya URAYAMA

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 1,   Pages 122-132 doi: 10.1007/s11465-020-0603-5

Abstract: Microwave induced plasma torches find wide applications in material and chemical analysis., making it available for glass surface modification and polishing.A dedicated nozzle is designed to inject secondary gases into the main plasma jet.The CE–MIP torch is experimentally tested for surface energy modification on glass where it creates asuper-hydrophilic surface.

Keywords： microwave induced plasma     spectrum analysis     surface modification    

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Response surface regression analysis on FeCrBSi particle in-flight properties by plasma spray

Runbo MA,Lihong DONG,Haidou WANG,Shuying CHEN,Zhiguo XING

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 3,   Pages 250-257 doi: 10.1007/s11465-016-0401-2

Abstract: effects between every two of argon flow rate, voltage, and spray distance on in-flight particles by plasmaResults of the response surface methodology show that the interactive effects between voltage and sprayFor a given argon flow rate, particle velocity and temperature response surface are obviously bending

Keywords： particle velocity     particle temperature     interactive effects     response surface    

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Modification of acidity of Mo-Fe/HZSM-5 zeolite via argon plasma treatment

ZHU Xinli, YU Kailu, CHENG Dangguo, XIA Qing, LIU Changjun, ZHANG Yueping

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 1,   Pages 55-58 doi: 10.1007/s11705-008-0005-4

Abstract: conducted to confirm that the acidity of Mo-Fe/HZSM-5 zeolite could be selectively modified via the glowdischarge plasma treatment.The plasma catalyst treatment could totally change the distribution of aromatic products with higherSome polycyclic aromatics such as anthracene, pyrene and phenanthrene were also produced over the plasma

Keywords： phenanthrene     Mo-Fe/HZSM-5     conversion     glow discharge     polycyclic    

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Sub-nanometer finishing of polycrystalline tin by inductively coupled plasma-assisted cutting

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 3, doi: 10.1007/s11465-023-0751-5

Abstract: However, the existence of grain boundary (GB) limits the surface roughness of polycrystalline tin afterIn this work, a novel method termed inductively coupled plasma (ICP)-assisted cutting was developed forExperiments conducted based on the ICP system indicated that the plasma-assisted cutting method promotedreduction of the influence of GB steps on the finishing of polycrystalline tin, thereby achieving a surfaceThe results of residual stress release demonstrated that the residual stress of plasma-assisted turning

Keywords： plasma-assisted cutting     polycrystalline tin     single-point diamond turning     surface roughness    

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Non-thermal plasma enhances performances of biochar in wastewater treatment and energy storage applications

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 4,   Pages 475-483 doi: 10.1007/s11705-021-2070-x

Abstract: Surface functionalization or modification to introduce more oxygen-containing functional groups to biocharIn this study, non-thermal plasma was applied for biochar surface carving before being used in contaminantThe plasma-treated biochar enabled a faster metal-adsorption rate and a 40% higher maximum adsorptionMoreover, to add more functionality to biochar surface, biochar with and without plasma pre-treatmentBET surface area and pore volume.

Keywords： non-thermal plasma     surface functionalization     biochar modification     wastewater treatment     supercapacitor    

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Abatement of mixed volatile organic compounds in a catalytic hybrid surface/packed-bed discharge plasma

Lianjie Guo, Nan Jiang, Jie Li, Kefeng Shang, Na Lu, Yan Wu

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 2, doi: 10.1007/s11783-018-1017-z

Abstract: In this study, post plasma-catalysis degradation of mixed volatile organic compounds (benzene, toluene, and xylene) has been performed in a hybrid surface/packed-bed discharge plasma reactor with Ag-Ce/The effect of relative air humidity on mixed VOCs degradation has also been investigated in both plasma-onlyIn comparison to the plasma-only system, a significant improvement can be observed in the degradationand the competitive adsorption of water vapor on the catalyst surface.

Keywords： Mixed VOCs     HSPBD plasma reactor     Degradation     Catalyst     Relative humidity    

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Towards an integrated modeling of the plasma-solid interface

Michael Bonitz, Alexey Filinov, Jan-Willem Abraham, Karsten Balzer, Hanno Kählert, Eckhard Pehlke, Franz X. Bronold, Matthias Pamperin, Markus Becker, Dettlef Loffhagen, Holger Fehske

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 2,   Pages 201-237 doi: 10.1007/s11705-019-1793-4

Abstract: Moreover, many plasma technology applications rely on the control of the plasma-surface interaction,In the majority of plasma simulations surface processes are either neglected or treated via phenomenologicalSimilarly, while surface physics simulations have often studied the impact of single ions or neutralsSuch an approach, necessarily neglects the mutual influences between plasma and solid surface andWe briefly summarize relevant theoretical methods from solid state and surface physics that are

Keywords： plasma physics     surface science     plasma-surface modeling     DFT     nonequilibrium Green functions    

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Rapid alloying of CoCrFeMnNi high-entropy alloy from elemental feedstock toward high-throughput synthesis

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 1, doi: 10.1007/s11465-022-0727-x

Abstract: High-entropy alloys (HEAs) are considered alternatives to traditional structural materials because of their superior mechanical, physical, and chemical properties. However, alloy composition combinations are too numerous to explore. Finding a rapid synthesis method to accelerate the development of HEA bulks is imperative. Existing in situ synthesis methods based on additive manufacturing are insufficient for efficiently controlling the uniformity and accuracy of components. In this work, laser powder bed fusion (L-PBF) is adopted for the in situ synthesis of equiatomic CoCrFeMnNi HEA from elemental powder mixtures. High composition accuracy is achieved in parallel with ensuring internal density. The L-PBF-based process parameters are optimized; and two different methods, namely, a multi-melting process and homogenization heat treatment, are adopted to address the problem of incompletely melted Cr particles in the single-melted samples. X-ray diffraction indicates that HEA microstructure can be obtained from elemental powders via L-PBF. In the triple-melted samples, a strong crystallographic texture can be observed through electron backscatter diffraction, with a maximum polar density of 9.92 and a high ultimate tensile strength (UTS) of (735.3 ± 14.1) MPa. The homogenization heat-treated samples appear more like coarse equiaxed grains, with a UTS of (650.8 ± 16.1) MPa and an elongation of (40.2% ± 1.3%). Cellular substructures are also observed in the triple-melted samples, but not in the homogenization heat-treated samples. The differences in mechanical properties primarily originate from the changes in strengthening mechanism. The even and flat fractographic morphologies of the homogenization heat-treated samples represent a more uniform internal microstructure that is different from the complex morphologies of the triple-melted samples. Relative to the multi-melted samples, the homogenization heat-treated samples exhibit better processability, with a smaller composition deviation, i.e., ≤ 0.32 at.%. The two methods presented in this study are expected to have considerable potential for developing HEAs with high composition accuracy and composition flexibility.

Keywords： laser powder bed fusion (L-PBF)     in situ alloying     high-entropy alloys     heat treatment     rapid    

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Title Author Date Type Operation

Research on Characteristic of Double Glow Discharge Plasma Surface Alloying Process

Gao Yuan,Xu Jinyong,Gao Qing,An Jinping,Xu Zhong

Journal Article

Development of Plasma Surface Metallurgy Technology

Xu Zhong

Journal Article

New Development of Double Glow Plasma Surface Metallurgy Technology

Xu Zhong,Zhang Gaohui,Zhang Pingze,Zhang Yanmei,Chi Chengzhong,Yuan Qinglong

Journal Article

Effect of glow discharge plasma on rhodium-based catalyst for oxygenates synthesis

HUANG Lihong, CHU Wei, XU Junqiang, HONG Jingping, YI Min

Journal Article

Kinetic Monte Carlo simulations of plasma-surface reactions on heterogeneous surfaces

Daniil Marinov

Journal Article

Plasma-assisted oxidation of benzoic acid

Anna Khlyustova, Nikolay Sirotkin

Journal Article

New Evolve of Plasma Alloying on Titanium Alloys Surface

Zhang Gaohui,Xu Zhong,Zhang Pingze,Ge Hongliang,Cui Yujian,Wen Tingdun,Pan Junde

Journal Article

Characterisation of a microwave induced plasma torch for glass surface modification

Adam BENNETT, Nan YU, Fengzhou FANG, Marco CASTELLI, Guoda CHEN, Alessio BALLERI, Takuya URAYAMA

Journal Article

Response surface regression analysis on FeCrBSi particle in-flight properties by plasma spray

Runbo MA,Lihong DONG,Haidou WANG,Shuying CHEN,Zhiguo XING

Journal Article

Modification of acidity of Mo-Fe/HZSM-5 zeolite via argon plasma treatment

ZHU Xinli, YU Kailu, CHENG Dangguo, XIA Qing, LIU Changjun, ZHANG Yueping

Journal Article

Sub-nanometer finishing of polycrystalline tin by inductively coupled plasma-assisted cutting

Journal Article

Non-thermal plasma enhances performances of biochar in wastewater treatment and energy storage applications

Journal Article

Abatement of mixed volatile organic compounds in a catalytic hybrid surface/packed-bed discharge plasma

Lianjie Guo, Nan Jiang, Jie Li, Kefeng Shang, Na Lu, Yan Wu

Journal Article

Towards an integrated modeling of the plasma-solid interface

Michael Bonitz, Alexey Filinov, Jan-Willem Abraham, Karsten Balzer, Hanno Kählert, Eckhard Pehlke, Franz X. Bronold, Matthias Pamperin, Markus Becker, Dettlef Loffhagen, Holger Fehske

Journal Article

Rapid alloying of CoCrFeMnNi high-entropy alloy from elemental feedstock toward high-throughput synthesis

Journal Article