A novel approach of waste tires rubber utilization via ambient air direct current arc discharge plasma

2022 ◽  
Vol 227 ◽  
pp. 107111
Author(s):  
A.Ya. Pak ◽  
K.B. Larionov ◽  
E.N. Kolobova ◽  
K.V. Slyusarskiy ◽  
J. Bolatova ◽  
...  
Keyword(s):  
Direct Current ◽  
Discharge Plasma ◽  
Arc Discharge ◽  
Ambient Air ◽  
Waste Tires ◽  
Novel Approach

Raman Spectra of SrTiO3 Prepared by Direct Current Arc Discharge Plasma Process

2014 ◽  
Vol 1004-1005 ◽  
pp. 415-419
Author(s):  
Shuang Bin Li ◽  
Ying Yao ◽  
Yong Zhong Jia ◽  
Jing Yan ◽  
Shao Lei Xie
Keyword(s):  
Raman Spectra ◽  
Strontium Titanate ◽  
Direct Current ◽  
Discharge Plasma ◽  
Arc Discharge ◽  
Second Order ◽  
Plasma Process ◽  
Plasma Technique ◽  
Cubic Structure ◽  
Xrd Patterns

The XRD patterns of Strontium Titanate (SrTiO3) prepared by direct current arc discharge plasma technique show that the well crystallized cubic structure. A Raman spectra study is performed to investigate SrTiO3 ceramics and powders compared with earlier investigations. The observed Raman spectra in this work have been interpreted primarily as second order and derived from combinations, overtones and differences of phonon frequencies.

Phase formation and microstructure of BaxSr1−xTiO3 ceramics prepared by direct current arc discharge plasma process

2014 ◽  
Vol 123 ◽  
pp. 235-237 ◽  
Author(s):  
Shuangbin Li ◽  
Ying Yao ◽  
Yongzhong Jia ◽  
Zhenhua Cui
Keyword(s):  
Phase Formation ◽  
Direct Current ◽  
Discharge Plasma ◽  
Arc Discharge ◽  
Plasma Process

scholarly journals Получение керамики на основе карбида кремния из золошлаковых отходов

2020 ◽  
Vol 46 (14) ◽  
pp. 21
Author(s):  
А.Я. Пак ◽  
В.Е. Губин ◽  
Г.Я. Мамонтов
Keyword(s):  
Silicon Carbide ◽  
Direct Current ◽  
Final Stage ◽  
Analytical Methods ◽  
Arc Discharge ◽  
Ambient Air ◽  
Powder Product ◽  
Three Stages ◽  
Sintering Method ◽  
Carbon Plasma

The paper shows the possibility of obtaining bulk samples of solid ceramics based on silicon carbide obtained from ash waste. The process is implemented in three stages: the initial ash waste was treated with a carbon plasma of a direct current arc discharge under ambient air conditions using a vacuumless method, then the obtained powder material was purified from unbounded carbon in an atmospheric furnace, and at the final stage the powder product was sintered by the plasma spark sintering method. According to analytical methods, the result is a ceramic based on silicon carbide with a density of 3.05 g/cm3 and a hardness of up to 19.9 GPa.

scholarly journals Получение карбида титана в атмосферной электроразрядной плазме

2020 ◽  
Vol 90 (5) ◽  
pp. 805
Author(s):  
А.Я. Пак ◽  
Т.Ю. Якич ◽  
Г.Я. Мамонтов ◽  
М.А. Рудмин ◽  
Ю.З. Васильева
Keyword(s):  
Titanium Carbide ◽  
Discharge Plasma ◽  
Arc Discharge ◽  
Synthesis Method ◽  
Experimental Studies ◽  
Ambient Air ◽  
X Ray Diffraction ◽  
X Ray ◽  
Carbide Particles ◽  
Synthesis Duration

The paper discusses the experimental studies connected with development of scientific and technical foundations for the synthesis method of titanium carbide by electric arc discharge plasma under ambient air condition. According to the X-ray diffraction data, the dependences between the product phase composition and the synthesis duration was determined. According to the scanning electron microscopy and energy dispersive analyses data, a morphological types number of titanium carbide particles, which are formed as a result of uneven distribution of energy in the reaction volume, was identified.

Enhanced hydrogen production by methanol decomposition using a novel rotating gliding arc discharge plasma

RSC Advances ◽  
2016 ◽  
Vol 6 (16) ◽  
pp. 12770-12781 ◽  
Author(s):  
Hao Zhang ◽  
Fengsen Zhu ◽  
Xiaodong Li ◽  
Kefa Cen ◽  
Changming Du ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Direct Current ◽  
Discharge Plasma ◽  
Arc Discharge ◽  
Plasma Reactor ◽  
Methanol Decomposition ◽  
Gliding Arc Discharge ◽  
Gliding Arc

Hydrogen production from methanol decomposition was performed in a novel direct current (DC) rotating gliding arc (RGA) plasma reactor.

Effect of energy on the phase composition of the product of arc discharge synthesis in the tungsten-carbon system obtained in a self-shielding autonomous gas environment

2020 ◽  
Vol 10 ◽  
pp. 79-87
Author(s):  
A. Ya. Pak ◽  
◽  
A. I. Kokorina ◽  
Keyword(s):  
Electron Microscopy ◽  
Phase Composition ◽  
Direct Current ◽  
Arc Discharge ◽  
Atmospheric Oxygen ◽  
Ambient Air ◽  
Synthesis Product ◽  
Powder Materials ◽  
Tungsten Carbides ◽  
Carbon System

The paper presents the results of experimental studies on the preparation of ultrafine powder materials of the tungsten-carbon system in the plasma of a direct current arc discharge initiated in an ambient air. According to the results of X-ray diffractometry, transmission electron microscopy, scanning electron microscopy, and elemental analysis, the product identifies micro-sized and nanoscale crystalline objects that are carbon graphite-like materials gC, tungsten carbides WC and W2C with a hexagonal structure, tungsten W with a cubic structure. As a result of a series of experiments, the possibility of influencing the phase composition of the synthesis product by the amount of energy supplied, which is linearly dependent on the duration of the arc discharge, was established. In this case, tungsten oxide phases were not found in the composition of the synthesis products within the framework of the applied analytical techniques. The process of obtaining non-oxide materials during the generation of a direct current arc plasma in the presence of carbon and tungsten is possible due to the intense generation of carbon monoxide and carbon dioxide gases, which shield the reaction volume from atmospheric oxygen. Thus, in the framework of the presented work, the possibility of controlling the phase composition of the product of vacuumless arc synthesis in the tungsten-carbon system by changing the duration of the discharge burning at a constant direct current was shown for the first time.

scholarly journals One-Step Synthesis of SnO2/Carbon Nanotube Nanonests Composites by Direct Current Arc-Discharge Plasma and Its Application in Lithium-Ion Batteries

Nanomaterials ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 3138
Author(s):  
Da Zhang ◽  
Yuanzheng Tang ◽  
Chuanqi Zhang ◽  
Qianpeng Dong ◽  
Wenming Song ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Lithium Ion Batteries ◽  
Direct Current ◽  
Discharge Plasma ◽  
Arc Discharge ◽  
Synthesis Method ◽  
Lithium Ion ◽  
Synthesis Process ◽  
Plasma Synthesis ◽  
One Step

Tin dioxide (SnO2)-based materials, as anode materials for lithium-ion batteries (LIBs), have been attracting growing research attention due to the high theoretical specific capacity. However, the complex synthesis process of chemical methods and the pollution of chemical reagents limit its commercialization. The new material synthesis method is of great significance for expanding the application of SnO2-based materials. In this study, the SnO2/carbon nanotube nanonests (SnO2/CNT NNs) composites are synthesized in one step by direct current (DC) arc-discharge plasma; compared with conventional methods, the plasma synthesis achieves a uniform load of SnO2 nanoparticles on the surfaces of CNTs while constructing the CNTs conductive network. The SnO2/CNT NNs composites are applied in LIBs, it can be found that the nanonest-like CNT conductive structure provides adequate room for the volume expansion and also helps to transfer the electrons. Electrochemical measurements suggests that the SnO2/CNT NNscomposites achieve high capacity, and still have high electrochemical stability and coulombic efficiency under high current density, which proves the reliability of the synthesis method. This method is expected to be industrialized and also provides new ideas for the preparation of other nanocomposites.

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