Branislav Hadzima

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Magnesium alloys are promising materials for biomedical applications because of many outstanding properties like biodegradation, bioactivity and their specific density and Young's modulus are closer to bone than the commonly used metallic implant materials. Unfortunately their fatigue properties and low corrosion resistance negatively influenced their(More)
Magnesium alloys suffer from their high reactivity in common environments. Protective layers are widely created on the surface of magnesium alloys to improve their corrosion resistance. This article evaluates the influence of a calcium-phosphate layer on the electrochemical characteristics of AZ31 magnesium alloy in 0.9 % NaCl solution. The calcium(More)
Effect of processing by equal channel angular pressing (ECAP) on the degradation behaviour of extruded LAE442 magnesium alloy was investigated in a 0.1M NaCl solution, Kirkland's biocorrosion medium (KBM) and Minimum Essential Medium (MEM), both with and without 10% of foetal bovine serum (FBS). Uniform degradation of as extruded and ECAP processed samples(More)
February 2017, Vol. 17, No. 1 Advisory Board Prof. hab. Dr. Stanislav Adamczak, MSc. Politechnika Kielce, Poland Prof. Dana Bolibruchová, MSc. PhD. UZ in Zilina, Slovakia Prof. Milan Brožek, MSc., Ph.D. CULS in Prague, Czech Prof. Dr. M. Numan Durakbasa Vienna University of Technology, Austria Prof. Dr. František Holešovský, MSc. president, JEPU in Usti n.(More)
<lb>Not a year goes by that we don’t hear of another hazing scandal in a<lb>higher education institution. Many researchers took interest in this issue in<lb>order to understand its causes and consequences. They provided definitions<lb>and lead to prevent it. We found hazing in many social groups around the<lb>world, with different names, and under specific(More)
The paper deals with some methods for relative permittivity of dielectric materials measurement and with the relevant techniques. In addition to current methods of measurement evaluation on vector network analyser (VNA) it gives also an information about possibility of classical methods using for evaluation of VNA application at measurements as a faster(More)
High strength low alloy (HSLA) steels exhibit many outstanding properties for industrial applications but suffer from unsatisfactory corrosion resistance in the presence of aggressive chlorides. Phosphate coatings are widely used on the surface of steels to improve their corrosion properties. This paper evaluates the effect of a manganese phosphate coating(More)
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