A5022086596- Astrophysics and Cosmic Phenomena
- Metal and Thin Film Mechanics
- Plasma Diagnostics and Applications
- Radio Astronomy Observations and Technology
- Copper Interconnects and Reliability
- Neutrino Physics Research
- Particle accelerators and beam dynamics
- Diamond and Carbon-based Materials Research
- Ion-surface interactions and analysis
- Astronomical Observations and Instrumentation
- Environmental Monitoring and Data Management
- Semiconductor materials and devices
- Additive Manufacturing Materials and Processes
- Particle Detector Development and Performance
- Laser Material Processing Techniques
- Advanced Surface Polishing Techniques
- Dark Matter and Cosmic Phenomena
- Particle Accelerators and Free-Electron Lasers
- Particle physics theoretical and experimental studies
- Pulsars and Gravitational Waves Research
- Welding Techniques and Residual Stresses
- GaN-based semiconductor devices and materials
- Plasma Applications and Diagnostics
- Advanced Welding Techniques Analysis
- Medical and Agricultural Research Studies
Kazan State Technical University named after A. N. Tupolev
2020-2023
Korea Electrotechnology Research Institute
2003-2009
Irkutsk State University
1994-2005
Seoul National University
2004
D.V.Efremov Institute of Electrophysical Apparatus (Russia)
2001-2002
Institute of Theoretical and Applied Mechanics
2001
The article presents a laser-acoustic method for spot treatment of AISI 316L thin sheet steel. A setup has been developed conducting experiments with and without the application ultrasonic vibrations 40 kHz 100 W. An analysis microstructure weld points was carried out based on obtained optical images. globular shape dendrites revealed after influence, in contrast to resulting columnar by traditional method. algorithm determining percentage phase components — austenite introduced X-phase,...
We present results of an experiment performed in Lake Baikal at a depth approximately 1 km. The photomultipliers underwater neutrino telescope under construction this site were illuminated by distant laser. not only provided useful cross-check the time calibration detector but also allowed us to determine inherent optical parameters water way that was complementary standard methods. In 1997 we measured absorption length 22 m and asymptotic attenuation 18 m. effective scattering as 480 By use...
A semi-analytic model of collisionless sheath in plasma immersion ion implantation (PI/sup 3/) for a step bias with finite rise time cylindrical geometry has been developed. The takes into account the formation presheath, predicts overshooting and its further recovery to steady-state Child value. To verify model, dynamics investigated experimentally on 30-kV PI/sup 3/ setup using positively biased Langmuir probe technique. measurements have carried out argon helium plasmas inductively...
A three-dimensional non-stationary numerical model of spectrochemical and technological inductively coupled plasma (ICP) systems is presented in the paper. The considers ICP as a gaseous media (with temperature-dependent electric conductivity) interacting with electromagnetic field generated by inductive coil. based on simultaneous solution Maxwell's gas flow equations together energy equation coupled-together corresponding source terms material properties to take into account current...
The influence of ultrasonic vibrations on the flow molten metal during laser processing is investigated. This problem interest within context modernization existing technological processes, such as welding and cladding, for production structures with improved physical mechanical properties. introduction additional energy into liquid bath intensifies via forced stirring, which provides its homogenization leads to an increase in properties processed material due growth number crystallization...
The article presents a laser-acoustic method for spot treatment of AISI 316L thin sheet steel. A special setup has been developed with the use 3D printing technology conducting experiments and without application ultrasonic vibrations 40 kHz 100 W. An analysis quality obtained weld points was carried out. defect such as burn-through discovered in welded using method. influence on geometry melt pool is shown. It established that due to intensification flows bath introduction vibrations,...
The paper considers the two-phase physical and mathematical model of AISI 316L stainless steel melting its numerical implementation by finite volume method in ANSYS CFX software based on well-known concepts simulating thermocapillary convection. Approximation functions are proposed to take into account effective specific heat dynamic viscosity transition process from a solid liquid state minimize error vicinity liquidus solidus temperature points. molten pool formation was considered under...
Brief description of design and performance some ion sources, developed at the Efremov Institute for use in different types accelerators, is given. They are several modifications duoplasmatron source including H-version; RF-, Penning, Freeman ECR sources positive cesium sputter negative production. Extracted current range spans 10/sup -4/-10/sup +2/ mA.
Diamond-like carbon (DLC), in particular hydrogenated amorphous (a-C:H) films have been formed on various conductive and dielectric materials by plasma immersion ion implantation deposition (PI 3 D) processing.Effect of pulse voltage other process parameters the film properties was investigated.It found that for substrates, a low-voltage (≈ 1 kV), high repetition rate pulsing provides better overall performance comparing to obtained applying higher voltages, which is also favourable...
Abstract DLC ( a ‐C:H) and Si‐DLC coatings have been deposited on various materials (steel, aluminium, silicon, glass, polymers) using 1‐m 3 interior‐antenna ICP PI D facility with HMDSO toluene as precursors. For conformal treatment of 3‐D workpiececs, low‐voltage (0.5 ‐ 1) kV, high repetition rate (up to 70 kHz) pulsing was applied. However, formation dielectric substrates performed at higher (2 10) kV voltage short (1 1.5) μs pulses minimize surface charging. Coating adhesion achieved by...