I. P. Sasinovskaya's research while affiliated with Institute of Metallurgy and Materials Science and other places

Publications (28)

Article
The damageability of niobium by pulsed fluxes of helium ions (HI) and helium plasma (HP) in the Plasma Focus (PF) setup was studied at a flux power density qi ~ 108 W/cm2 and qp ~ 107 W/cm2, respectively, and pulse duration τi ≈ 30 – 50 ns and τp ≈ 100 ns. In the implemented irradiation conditions the erosion of the material is observed associated...
Article
The features of the destructive effect of high-pressure generated under comparable conditions, namely, upon irradiation of target samples with pulsed laser radiation and beam-plasma flows created in Plasma Focus (PF) devices, on metal materials were studied. In both cases, close parameters of radiation-heat treatment were provided: power density q...
Article
The damage and structural state of the surface layer of Al–Li–Mg samples composed of Al–5% Mg–2% Li (wt %) under pulsed action of power streams of high-temperature deuterium plasma and high-energy deuterium ions in the Plasma Focus (PF) device have been investigated. The radiation power density was q ~ 10⁶ W/cm²; the pulse duration was 50–100 ns. P...
Article
The following investigation of the damageability of the Al2O3 oxide ceramic coating on the aluminum substrate under the influence of the concentrated energy fluxes of different nature and pulse duration performed: pulsed laser radiation in the free running mode (at the power density of q = 10⁵–2 × 10⁶ W/cm² and pulse duration of τi = 0.7 ms) and mo...
Article
The effect of a high-power pulsed flow of deuterium ions and deuterium plasma generated in a plasma focus setup on the surface structure of a Ti plate was investigated. It was established that, depending on the radiation-thermal conditions on the surface, three zones with different surface morphology, structure, and defects were formed in the surfa...
Article
Results of the investigation of multicomponent coating deposition on the metal substrate in the cathode part of a dense plasma focus device are presented. The features of the processes accompanying the coating are considered: evaporation of elements of chromium-manganese austenite 25Cr12Mn20W tube, which was located along the axis of the plasma foc...
Article
The effects of powerful pulsed ion and high-temperature plasma fluxes generated in a plasma focus (PF) device and the effect of free running laser radiation on a corundum (α-Al2O3) ceramic produced by powder technology are studied. The power flux density q and acting pulse time τ for plasma stream, ion flux, and laser irradiation were q p ≈ 107 W/c...
Article
We present results of experiments on the action of nanosecond pulsed beams of nitrogen ions and nitrogen plasma on specimens of Ti-4 Al-3 V (wt %) alloy that were obtained using a plasma focus device. Two regimes of material treatment were studied: a high-energy irradiation (with radiation power density of 108 W/cm2), where the surface layer is mel...
Article
Changes in the structure and phase composition of low-activated Cr-Mn austenite and 9Cr ferrite steels exposed to high-power nanosecond pulses of high-temperature nitrogen plasma and swift nitrogen ions (desk-size plasma focus devices, 106–109 W/cm2) are observed. Keywordshigh-temperature plasma–swift ions–nitrogen implantation–nitride phase
Article
Austenitic steel 10Cr12Mn14Ni4AlMo and Ti-4Al-3V alloy were irradiated with nanosecond pulsed nitrogen ion and plasma streams in plasma focus devices. The two different modes of the treatment were applied: high power density (≥ 10 8 W/cm 2) irradiation with melting of the surface layer and irradiation with power density ~ 10 7 W/cm 2 below the melt...
Article
Innovative technology of a plasma accelerator of the Dense Plasma Focus (DPF) type based on modern elements of high-current nanosecond electronics is presented. This technology ensures operation of the devices having capacitor bank energy 1 through 10 kJ with a high repetition rate (up to tens cps) and a long lifetime (on the level of 106 "shots")....
Article
We present some results of our experiments with use of a number of plasma accelerators of the Dense Plasma Focus type, namely PF-5M (IMET, bank energy - 5 kJ), PF-6 (IPPLM, 7 kJ), and the largest in the world DPF facility operating with deuterium as a working gas PF-1000 (IPPLM, 1.2 MJ). We use this set of devices for application in the field of ra...
Article
The results of thermal cycling tests of W-Cu pseudo-alloy as a candidate material for fusion reactor divertor plates showed that the material resisted without any damages to radiation and thermal shock effects of cyclic electron beam of 6, 8 and 10 MW/m2 power density when a good thermal sink was provided. Practically ideal thermal contact between...
Article
The effect of pulse laser irradiation in free generation mode on Ti-V system alloys containing 2, 4 and 6 wt.% of V in air and vacuum environments was investigated. The peculiarities of phase and structure transformations in the alloys in comparable conditions were determined and analyzed.
Article
The effects of free generated pulsed laser irradiation in vacuum on V - 10 at.% Ti and V - 35 at.% Ti alloys are investigated. The most characteristic materials damages under nonstationary heating due to plasma disruption and runnina-away electrons effect were determined. The results are analysed in light of V - Ti alloys perspective application fo...
Article
The effect of pulsed laser irradiation (LT) under non-stationary heat exposure of plasma break-down type in fusion reactor chamber on slightly-activated structural vanadium-titanium alloys has been studied. Action of Li was shown to lead to decay of B-solid solution of vanadium with segregation of oxides, nitrides and oxynitrides of titanium. The a...
Article
Results of experiments on aluminum-copper alloy zone melting under earth and outer space conditions using orbital complex 'Mir' and 'Pion-M' apparatus are presented. More inhomogeneous admixture component distribution along the ingot was found to be realized after space experiments as opposed to earth ones. Under zero gravitation oxide film on the...
Article
A macrostructure of deformable aluminium alloys after pulsed laser irradiation effect has been studied with purpose to solve some problems of processes of laser thermal treatment. Laser thermal treatment of alloys D19, Ak4 and B95 has been shown to cause a microcracks formation and unhardening. Moreover, in the alloy 1420 one can observe formation...
Article
Investigations were conducted into the solidification of aluminum alloys of the Al-W, Al-Sb, and Al-Cu systems in zero gravity conditions realized in the Salyut-6-Soyuz orbital station and the special features of the effect of reduced gravity on the solidification process were examined. It is shown that the absence of free convection in the melts o...

Citations

... It is quite typical for materials irradiated in a DPF device. [24][25][26][27][28] The ninefold irradiation also led to the very large increase in the second phase extraction that can be seen in Figs. 17 and 18 and that appeared as a rule during the cooling stage. Analysis of the X-ray diffraction patterns indicates the presence of two solid solutions within the ODS steel specimens. ...
... Ion beams with the ion energy of 25-50 keV are widely used for the implantation of semiconductors [17][18][19]. Recently, there appeared new ion accelerators providing ion beams of different ions in a wide range of energies and power densities [20][21][22][23][24], which are used for the modification of metals and alloys [25][26][27][28][29][30][31]. Ion beams of different ions (both continuous and pulsed) with energies of several keV to hundreds of keV are used. ...
... [2,6,17], cracks were found on the surface of alumina ceramics after IPIB irradiation. Maslyaev et al. also reported the formation of craters and cracks on the surface of alumina ceramics [18]. Therefore, it is of great significance to study the evolution of defects induced by IPIB to utilize it more effectively. ...
... High requirements are imposed on modern coatings: the coefficient of friction μ should be in the range from 0.1 to 0.35; heat resistance from 900 to 1200 °C; chemical stability; hardness 35-50 GPa; adhesion strength 50-150 N, etc. Many studies have been written on the application of these methods [5][6][7][8][9]. There are significant disadvantages that limit the use of the CVD method on the finishing tool. ...
... Radiation yields are computed incorporating the effects of plasma self-absorption. Thermonuclear and beam-gas target components of neutron yields are computed as are properties of fast ion beams (FIB) and fast plasma streams (FPS) exiting the focus pinch [56][57][58]135]. The duration of this slow compression phase is set as the time of transit of small disturbances across the pinched plasma column. ...
... First, let us discuss the preliminary results. The insufficient data of preliminary measurements lead us to wrongly presume a peculiar effect of hardened zones within the material [19] as such phenomenon has previously been found in several materials (within W, WL10 and stainless steel) that have been irradiated in fair regime (see Table 1 for details of the regime), by varying the number of pulses and with different working gases (deuterium in case of tungsten samples with different processing; hydrogen and nitrogen in case of stainless steels) [7,20,21]. ...