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Technical University of Košice, SlovakiaDepartment of Materials Science
Materials TestingPhysics of MetalsMetals ScienceHeat Treatment of MetalsCorrosion Science
Facilities
• Optical microscopes: Olympus, Leitz, Neophot with digital camera, sample preparation units of Struers and Leco
• Electron microscopes: – scanning EM Jeol JSM35CF with EDX
analyser Link 10000– transmission EM Jeol JEM 2000FX with
EDX analyser Link 860 and EELS analyser
Jeol Asea 10
We are looking for partners in
reserach and applications of
nanotechnologies,Fe nanoparticles,
Sn nanowires
Research :
general fields of present research:• microstructure and properties of
steels and non-ferrous metals• corrosion science of metals • development of testing methods
of materials• optimisation and application of
heat treatment of metals• electron microscopy and
microanalyses of materials
Our reserach activities which come under
themes of FP6 and FP7:
• nanoparticles: Fe nanospheroids and Fe nanowires, Sn nanowires (applied for project)
• ultrafine-grained materials (ECAP)
• nanoidentation testing of materials (applied for project)
• Cu based shape memory alloys
Fe nanoparticlesDevelopment of technologie for production of Fe spherical nanoparticels in dimension range from 10 to 200nm with small or no oxide layer on the surface.
Idea of new technology is based on precipitation of iron from solid solutions with small or no solubility of Fe at room temperature. At present time we are able to produce small amounts of Fe particles with mean diameter in range 10-200nm.
Also we are developing technology for changing shape of particles from spheroids to elipsoids.
Fe spheroids xxtracted from Cu-Fe alloy
1 m
Fe nanorods (nanowires ) produced by plastic deformation of spheroids
Fe nanowires discontinuously precipitated in Cu-Fe alloy
Fe nanowires after discontinuous precipitation in Cu-Fe alloy extracted to
carbon replica
Applications of Fe nanoparticles?
Medicin (cancer therapy)
Magnetic media
Magnetic liquids
Fillers
Catalyses etc.
Reserach on production of Sn nanowires
The reserch is based on the same phenomenon of Sn whiskers formation as in cases of Pb free solders known in electrotechnics
Comparison of Sn nanowires with man hair
100m
Sn whisker- nanowire of total length 2,5mm
A few examples:in situ growth of whiskers- nano or micro wires on surface of metallographic polished sample in time range of few month