Basic and Applied Materials Science Laboratory

Basic and Applied Materials Science Laboratory

Leysin V.N.

Prof. Vladimir Leitsin, Director

(VLetsin@kantiana.ru; tel. +7 9114876171; extension 9100);

Laboratory equipment:

Electropuls E1000 fatigue testing system:

  • configuration: twin column load frame with actuator in upper crosshead

  • ±1000 N dynamic load capacity and ±710 N static load capacity

  • high dynamic performance, capable of operating at over 100 Hz

  • 60 mm stroke

  • measurement accuracy of 0.5 %

  • a wide range of tests

Environment chamber:

  • temperature range: -80 to +250°С

  • dimensions: 245 х 240 х 230 mm

  • a 120 l Dewar

Temperature-regulated bath:

  • fatigue testing in a liquid environment

Y.Cheetah microfocus X-ray system

Manipulation:

  • 2D and 3D images

  • Inspection area (max.) 460 mm x 410 mm

  • Sample size (max.) 800 mm x 500 mm

  • Oblique viewing +/-70°

Open X-ray tube:

  • Voltage range 25–160 kV

  • Current range 0.01–1.0 mA

  • Detail detectability < 1 µm

Application:

  • Printed circuit boards

  • Electronic and mechanical modules

  • Electromechanical components and plugs

  • Semiconductor packaging and interconnects

  • Sensors

  • MEMS and MOEMS

SHiMADZU HMV G21ST micro Vickers hardness tester

Application:

  • Metal Microstructures

  • Welds and other adhesion points

  • Paint layers and metallic plating

  • Fine Ceramics

  • Small Precision Devices (Gears, Axels, Cams)

  • Electronic components (ICs, PCBs)

  • Thin samples (metal foil, razor blades)

  • Wire materials (tire cords, piano wire) 

  • Medical-related items (artificial teeth, bones)

Multi turret function:

  • two indenters

  • four objective lenses

Measurement modes:

  • Vickers hardness HV;

  • Knoop hardness HK;

  • Length L (μm);

  • Fracture toughness Kc

Emax and and РМ 100 high energy ball mills (Retsch GmbH);

Research areas:

  • Basic and applied composite materials science (including bio and medical ceramics); studying durability, fatigue, and long-term strength, cumulative damage processes in structured materials and materials obtained through additive manufacturing;

  • Physiochemical properties of self-propagating synthesis and ceramic materials sintering, including the development of a theory of initiated chemical transformations in ultrafine metal/metal and metal/non-metal materials under thermomechanical stress;

  • Computer simulations and calculations of synthesis and sintering parameters in ceramic materials and multicomponent multiphase laminate and powder systems.

Overview of the ‘Computer simulations of interrelated processes’ research area:

Today, there are few theories capable of accurately describing key mechanisms behind the activation of interrelated processes of synthesis under dynamic thermomechanical stress, heterogeneous heating of chemically reacting materials, or phase transitions and conditions for reactions characterised by unstable state parameters and structures at all stages of chemical transformations. To develop a theory of chemically reacting media that would be instrumental in assessing key factors and modes of structured composite materials and coatings, it is necessary to take into account the wide variety of physiochemical processes and dynamic characteristics of reacting media and build a model of reacting media. A model of chemically reacting media should contribute to the development of experimental methods for studying the kinetics of physiochemical processes and modern synthesis technology for obtaining composite coatings used in power and aircraft engineering, engine technology, etc. An interesting research area is combining the methods of selective laser sintering (SLS) and self-propagating high-temperature synthesis (SHS) in the framework of the rapid prototyping technology. Rapid heating, which is characteristic of laser impact in SLS processes, is comparable to intensive dynamic loading. Resulting processes are in a non-equilibrium state and they cannot be described using the classical powder metallurgy approaches. Today, the SHS method combined with intensive termomechanical stress is intensively studied in Russia, the US, China, Japan, Israel, the Netherlands, Poland, and other countries. Theoretical and practical results have been obtained in different fields of chemical physics, methods for process simulations in reacting media, composite materials mechanics, solid body physics, and modern materials science, all this contributing to the improvement of current materials production techniques. A transition to the nanoscale level accelerated research in this area.

Research object:

Dynamic compaction and thermal shock of a heterogeneous body, heat transfer in multi-phase media with heat sources and sinks, induced liquid and gas filtration, kinetics of chemical transformations, changes in heterogeneous medium parameters. Disperse systems under high pressures and temperatures in a practically significant range of parameter changes. Synthesis and sintering initiation in laminate systems. A model of selective laser sintering combined with self-propagating high-temperature synthesis. Composite materials and coatings synthesis techniques.

Theoretical significance and novelty:

The practical contribution of this research is the development of a method for assessing the conditions and practices of structured composite materials manufacturing in the process of dynamic compaction of reacting powder materials, including laminates, and practices of manufacturing non-conventional construction materials and coatings through synthesis. This research is a contribution to the ‘Nanosystem and materials industry’ R&D project aiming to develop a technology for synthesising new materials and develop modern approaches to studying process parameters of synthesis. The theoretical level of results obtained is comparable to best international practices, whereas some of the findings prove to be groundbreaking. The theory of dynamic and thermomechanical initiation of discrete energy-related materials will facilitate the development of a new technology for synthesising elements from structured composite materials through combing selective laser sintering and self-propagating high-temperature synthesis in the framework of the rapid 3D prototyping technology.

Expected results:

The developed approach can contribute to studying the practices of mechanically activated synthesis of nanostructured materials and related composites, providing a basis for a new technology for synthesising ultra- and nanostructured refractory and heat-resistant materials and elements of structures coatings – a technology that will combine mechanical activation, compaction, and shaping. It can also be used in developing courses and syllabi for master and PhD students in mathematical modelling, chemical physics, nanomaterials and nanotechnology, physics of kinetic phenomena, mechanics of deformable solid body, and materials science and materials technology. Such studies will ensure the development of the mechanics of deformable reacting solid body, an increase in the number of reacting laminate and powder systems as computer simulation objects, studies into ultrafast solid phase transformations at the shock pulse front, and the development of a modern theory of physiochemical processes in materials obtained through additive manufacturing. They will also contribute to the development of a new basic research area – the theory of mechanically activated synthesis of composite materials with micro- and nanoscopic structures.

The study is carried out within the University’s priority research area ‘Materials science, nanosystems, and medical biotechnology’.



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