Gas and plasma dynamics of RF discharge jet of low pressure in a vacuum chamber with flat electrodes and inside tube, influence of RF discharge on the steel surface parameters

Христолюбова, В И; Кашапов, Н. Ф.; Шаехов, М Ф

doi:10.1088/1757-899x/134/1/012017

Cited by 7 publications

(3 citation statements)

References 6 publications

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“…They involve plasma generated with a variety of methods and various modes of their application. Thus, an abundant number of papers [4][5][6][7][8][9][10][11][12][13][14][15][16][17] describe procedures in which plasma was generated by electric static or pulsed either dc low-voltage or RF discharges inside gas bubbles formed in water. Such treatment produced ozone [8] and hydrogen peroxide [11,13,18,19].…”

Section: Introductionmentioning

confidence: 99%

Structure and Physicochemical Properties of Water Treated under Nitrogen with Low-Temperature Glow Plasma

Chwastowski

Ciesielska

Ciesielski

et al. 2020

Water

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Water treated with low-temperature, low-pressure glow plasma (GP) in contact with air stimulates various microorganisms, the growth of various plants and provides healthy breeding of various animals. In this paper, we present water treated with GP under oxygen-free nitrogen. It is potentially suitable for breeding anaerobic microorganisms, and increasing the crops of plants utilizing atmospheric nitrogen. Deionized water saturated with oxygen-free nitrogen was treated for 5 to 90 min with low-temperature glow plasma (GP). That operation produced nitrogen in various exited states depending on the treatment time. These excited nitrogen molecules built aqueous clathrates around them. The number and structure of those clathrates depended on the time of the treatment with GP. In terms of mass, density, pH, conductivity, surface tension, Ultraviolet-Visible (UV-VIS), Fourier Transformation Infrared (FTIR), Raman and Electron Spin Resonance (ESR) spectra as well as Differential Scanning Calorimetry (DSC), the macrostructure of water saturated with nitrogen treated with GP strongly depended on the treatment time. Based on the entropy criterion, the macrostructure formed on 30 and 5 min treatment was the most and least organized, respectively.

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Section: Introductionmentioning

confidence: 99%

Structure and Physicochemical Properties of Water Treated under Nitrogen with Low-Temperature Glow Plasma

Chwastowski

Ciesielska

Ciesielski

et al. 2020

Water

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“…Skin temperature depends on the degree of processing and the amount of water contained in it: so pelts is heated up to 70 The higher the moisture content of the sample, the lower the temperature rises, since the water filling the capillary and pore volume reduces the effectiveness of the plasma exposure. A sample with an initial moisture of 60-80% is heated up to 50-60 0 C, the skin, dehydrated beforehand, is heated up to 70-100 0 C [3]. This is happened due to the fact that for the ionization of water molecules the energy 12.60 eV is necessary, and while for air -13.62 eV.…”

Section: Resultsmentioning

confidence: 99%

“…Furthermore, physical and chemical transformations on the treated surface depend not only on the characteristics of the plasma stream but also on the charging state of surface [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Studies of the influence of nonequilibrium plasma thermal exposure on the characteristics of the capillary-porous polymer material

Makhotkina

Христолюбова

2017

J. Phys.: Conf. Ser.

Self Cite

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Abstract. Capillary-porous materials, which include natural macromolecular tanning material, are exposed to a number of factors during the treatment by a nonequilibrium plasma. Plasma particles exchange the charge and energy with the atoms of the material during the interaction of the plasma with the surface. The results of treatment are desorption of atoms and molecules from the body surface, sputtering and evaporation of material's particles, changes of the structure and phase state. In real terms during the modification of solids by nonequilibrium low-temperature plasma thermal effect influences the process. The energy supplied from the discharge during the process with low pressure, which is converted into heat, is significantly less than during the atmospheric pressure, but the thermal stability of high-molecular compounds used in the manufacture of materials and products of the tanning industry, is very limited and depends on the duration of the effect of temperature . Even short heating of hydrophilic polymers (proteins) (100-180 0 C) causes a change in their properties. It decreases the collagen ability to absorb water vapor, to swell in water, acids, alkalis, and thus decreases their durability. Prolonged heating leads to a deterioration of the physical and mechanical properties. Higher heating temperatures it leads to the polymer degradation. The natural leather temperature during plasma exposure does not rise to a temperature of collagen degradation and does not result in changes of physical phase of the dermis. However, the thermal plasma exposure must be considered, since the high temperatures influence on physical and mechanical properties.

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The effect of pressure for ashing process by using hollow cathode oxygen plasma

Yunata

Yamauchi

2020

The 2nd International Conference on Physical Instrumentation and Advanced Materials 2019

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Gas and plasma dynamics of RF discharge jet of low pressure in a vacuum chamber with flat electrodes and inside tube, influence of RF discharge on the steel surface parameters

Cited by 7 publications

References 6 publications

Structure and Physicochemical Properties of Water Treated under Nitrogen with Low-Temperature Glow Plasma

Structure and Physicochemical Properties of Water Treated under Nitrogen with Low-Temperature Glow Plasma

Studies of the influence of nonequilibrium plasma thermal exposure on the characteristics of the capillary-porous polymer material

The effect of pressure for ashing process by using hollow cathode oxygen plasma

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