Dynamics of plasma flow formation in a pulsed accelerator operating at a constant pressure

Baimbetov, F. B.; Zhukeshov, A. M.; Amrenova, A. U.

doi:10.1134/s106378500701021x

Cited by 6 publications

(3 citation statements)

References 1 publication

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“…As shown in our previous works, the PPA KPU-30 has high enough power of a plasma flow, P max ∼ 10 MW/cm 2 , for surface processing of metal alloys [6,7]. In the pulse regime, highspeed plasma flow (υ ∼ 10 5 m/s) with energetic ions (E ∼ 1 keV) is produced.…”

Section: Introductionmentioning

confidence: 98%

Plasma flow formation in a pulse plasma accelerator in continuous filling regime

Zhukeshov

2009

Plasma Devices and Operations

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Distribution of energy density of a plasma flow in the KPU-30 pulse coaxial accelerator at continuous gas filling has been investigated. The influence of discharge parameters on energy density at various pressures of the working gas is demonstrated. It is shown that the maximal plasma energy occurs in a pressure range of 0.02-0.05 torr. Distributions of energy density in the axial and radial directions are obtained. The focus point of the plasma flow is found and the plasma flow energy density at this point is measured.

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Section: Introductionmentioning

confidence: 98%

Plasma flow formation in a pulse plasma accelerator in continuous filling regime

Zhukeshov

2009

Plasma Devices and Operations

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“…Obviously, the physical parameters of the process leading to the formation of structures of a given size can be achieved only under certain modes of processing. As shown in our works, pulsed plasma accelerator CPU-30 has a power density of 0.5-5 MW/cm 2 high enough for surface processing with melting, such as semiconductors, hard and doped metallic materials [4,5]. Well researched work of the accelerator in pulsed mode, when the working gas is injected into the electrode space before applying a high voltage.…”

Section: Introductionmentioning

confidence: 99%

The Improvement of Stainless Steel Properties after Pulse Plasma Processing

Zhukeshov¹

2013

IJMSA

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Abstract:The results of researches of stainless steel samples surface properties after interaction by pulsed plasma streams are presented. The modification carried out on CPU-30 pulsed plasma accelerator, operated on "continuously filling" mode, by single and multiple times. The structure of material was researched by SEM and XRD methods. The evolution of the grain dimension, in depending on the basic processing parameters is investigated. The physical properties of modified material were significant chance after multiple impacts. The role of new phases and crystal size influence on process are discussed.

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“…As it is shown in [6], the pulse plasma accelerator "CPA-30" with a coaxial system of electrodes provides high power supply (C = 75 µF, U = 30 kV) for melting the surface of metal alloys after plasma flow treatment. However, physical properties of processed materials change only under certain regimes of plasma flow, as high density of the energy flow can cause not only improvements of properties, but also destruction of the material.…”

Section: Introductionmentioning

confidence: 99%

Structure and Microhardness of Steel Samples after Pulse Plasma Flows Processing

Zhukeshov¹,

Gabdullina²,

Amrenova³

et al. 2013

MSA

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The phase structure of surfaces of steel samples, modified by pulse plasma processing, was analyzed using XRD and metallographic methods. It has been shown, that after pulse plasma processing under different conditions a modified structure consisting of three new phases, including austenite, iron nitride and carbide, is formed. The dependence of phase transition and microhardness on plasma flow parameters has been studied. A sharp decrease in the dimensions of ferrite crystallites after the impact of plasma flow is observed. The main purpose of hardening of common steel samples is formation of nano-dimension ferrite with oriented iron carbide on grains.

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Dynamics of plasma flow formation in a pulsed accelerator operating at a constant pressure

Cited by 6 publications

References 1 publication

Plasma flow formation in a pulse plasma accelerator in continuous filling regime

Plasma flow formation in a pulse plasma accelerator in continuous filling regime

The Improvement of Stainless Steel Properties after Pulse Plasma Processing

Structure and Microhardness of Steel Samples after Pulse Plasma Flows Processing

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