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Structure and Phase Analysis

Prof. Ing. Jiří Švejcar, CSc.
Research Group Leader

THEMATIC RESEARCH FOCUS

RESEARCH AREAS

  • Specialised service in the area of electron microscopy, microanalysis and x-ray diff raction for all research groups of CEITEC and also outside the CEITEC
  • Composites on metallic matrices
  • Ultra-fi ne grain materials
  • Nanostructured plasma coatings

MAIN OBJECTIVES

To establish The Structural Analysis Laboratory Core Facility for advanced structural and composition studies equipped with a transmission electron microscopy, scanning electron microscopy and x-ray diff raction analysis.

By means of specialised service in the area of the structural and composition analyses this research group will participate in the research of biomaterials, materials for energetics, communication, ecology and structural materials which will carry out other research groups of CEITEC.

CONTENT OF RESEARCH

Structure and phase analysis of advanced materials

The Core Facility (Structural Analysis Laboratory) will be equipped with top-class instruments for transmission and scanning microscopy, microanalysis, and X-ray diff raction analysis, with the aim of providing for such work for which would not be economic or meaningful to build specialised laboratories. Simultaneously, these specialised services will also be off ered to interested parties outside CEITEC centres. The research will proceed in close relation to the activities of the Advanced Ceramic Materials, Advanced Polymers and Composites and Materials for Sensors and Technological Processes Control Systems research groups. Its priority will therefore be to focus on the study of the microstructure, submicrostructure and local chemical analysis of new advanced ceramic and polymer materials and composites based on these materials. Another research area will be nanocrystalline thermal barrier coating prepared by thermal spray processing and materials with ultra-fi ne grain obtained via SPD (Severe Plastic Deformation), in particular by the ECAP method.

KEY RESEARCH EQUIPMENT

PLANNED RESEARCH INFRASTRUCTURE

Technology Units – Structural Analysis Laboratory Core Facility

  • FIB/SEM analytical microscope
  • High resolution 300 keV FEG TEM/STEM with aberration correctors + analytical systems (EDS + EELS)
  • High resolution (sub nanometer) FEG scanning electron microscope + analytical attachments (EDS + WDS + EBSD)
  • X-ray diff raction laboratory
  • TEM and SEM sample preparation unit
  • Materialographic sample preparation unit – coarse
  • Materialographic sample preparation unit – fine

CURRENT RESEARCH INFRASTRUCTURE

FEM (Transmission Electron Microscopy), JEOL 100C/ASID4, equiped with scanning attachment, two SEM´s (scanning electron microscopes) JEOL JXA-840A and Philips XL-30, equiped with energy and wave dispersive spectrometers, and EBSD attachment, two X-Ray diff ractometers Siemens D-500 and Philips X-Pert (JSPDS database, high temperature measurement up to 1300°C, possitionaly sensitive detectors). ZWICK 1382 load up to ± 200 kN, test temperatures from -196 to +200 °C, micro-testing machine MTS Tytron 250 Load cell up to ± 250 N, instrumented impact tester PSWO 3 (300 J) and instrumented impact tester Zwick/Roell B5113.303 (50 J) are available in the laboratory of brittle fracture.

MAIN PROJECTS

  • Research and development of construction and production technology of thin-walled spherical roller bearings (FR-TI1/175), Ministry of Industry and Trade, 2009-2010, L. Prochazka, ZKL – Research and Development, Inc., M. Dvořak, ZKL Brno, Inc., J. Švejcar, Brno University of Technology.
  • Multiscale design of advanced materials (GD106/09/H035), Czech Science Foundation, 2009-2012, I. Dlouhy, Institute of Physics of Materials AS CR, M. Šob, Masaryk University, J. Švejcar, Brno University of Technology.
  • Thermal spray processing and high temperature structural stability of nanocrystalline thermal barrier coatings (GA107/12/1922), Czech Science Foundation, 2012-2014, J. Švejcar, Brno University of Technology.
  • Protective diff usion coatings of cast nickel-based superalloys for high temperature application (GAP107/11/2065), Czech Science Foundation, 2011-2013, K. Obrtlik, Institute of Physics of Materials AS CR, T. Podrabsky, Brno University of Technology.
  • Unconventional methods for preparation of Al matrix composites strengthened by Al-Ni phases (GP106/09/P513), Czech Science Foundation, 2009-2011, L. Klakurkova, Brno University of Technology.

SELECTED PUBLICATIONS

  • CELKO, L. et all. Changes in Microstructure of Air Plasma Sprayed M-CrAlY Coatings After Short Thermal Exposure in Argon Atmosphere. Acta Phys. Polonica. 2011, 120, p. 336.
  • CELKO, L., KLAKURKOVA, L., SVEJCAR, J. Diff usion in Al-Ni and Al- NiCr Interfaces at Moderate Temperatures. Defect and Diff usion Forum. 2010, 297-301, p. 771-777.
  • SVEJCAR, J., FORET, R. Hydrogen embrittlement induced in bearing steel by electric erosion. Acta Metallurgica Slovaca. 2010, 1(2H), p. 99-103.
  • SVEJCAR, J. Current potentials of structure analysis. In Recent trends in structural materials. Dobřany: COMTES FHT. 2010, p. 218-227.
  • SVEJCAR, J., CELKO, L., KLAKURKOVA, L. Use of Powder Ligquid Method of Aluminide Diff usion Coatings Formation on Inconel 713 LC Nickel-Based Superalloy. Materials and Manufacturing Processes. 2009, 24(10-11), p. 1155-1161.
 

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