Metallography

  • FractographyMicrostructure examination
  • Electron probe microanalysis
  • Fractography – fracture surface analysis
  • Determination of area fraction of phases by means of image analysis
  • Measurement of grain size
  • Metallographic determination of non-metallic inclusion content
  • Microscopic measurement of layer thickness
  • Metallographic evaluation of the microstructure of cast iron
  • End quench hardenability tests
  • Measurement of hardness (in our laboratories and on site)
  • Macroscopic investigation of machine components

The metallographic laboratory is testing laboratory no. 1476 accredited by the Czech Accreditation Institute:


Equipment of the laboratory

  • Nikon and Carl Zeiss microscopes (50× – 1000× magnification), a fully-automatic motorized stage (for photographing large areas extending beyond a single field of view), software for digital processing of image and image analysis
  • Durascan automatic microhardness tester (Vickers scale HV 0.01 – HV10)
  • JEOL scanning electron microscopes
  • Detectors: secondary electron (SE) detector, backscattered electron (BSE) detector, INCA detector for energy-dispersive spectrometry (EDS) from Oxford Instruments and HKL NORDLYS EBSD high-speed camera
  • Other equipment: ion-beam polisher for preparing specimens for scanning electron microscopy – analysis of grains and subgrains, low-angle and high-angle grain boundaries and texture and crystallographic identification of phases
Grains Weld
Microstructure of quenched and tempered steel etched to reveal prior austenite grain boundaries

Close-up view of weld

 

Macrograph
Longitudinal section through a specimen after physical simulation of thermomechanical treatment. Specimen length: approx. 15  mm; specimen width: 6  mm. This micrograph was taken using an optical microscope with an automatic stage and pasted together from 28 fields of view.

News

COMAT 2016

Mar 8, 2017

The articles included in the review process were published in the journal IOP Conference Series: Materials Science and Engineering (MSE) ... more

New patent granting to COMTES FHT

Feb 8, 2017

On January 18, 2017 patent no. 306429 for the invention of a „Machinable brass with a reduced lead content suitable for forming by cold rolling“ was awarded by the Industrial Property Office in the Czech Republic to the company COMTES FHT. ... more

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