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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
The preparation and evaluation of intermetallic exothermic metallic blends
 Mynarčík, Pavel ; Moravčík, Igor (referee) ; Jan, Vít (advisor)
During exothermic reactions a significant amount of heat is released. This heat can be further utilized for heating up chemical substances, chemical reaction initiation or welding. The first part of this thesis contains survey of thermodynamics and thermodynamics and thermochemistry of exothermic reactions, overview of commonly used exothermic processes as thermites and NanoFoil, summary of intermetallic systems and possibilites of powder metallurgy as a fabrication process of exothermic powder blends. Based on the survey part is designed experimental powder blend obtained by powder metallurgy. 18 powder samples were analysed; chemical composition was obtained by XRD and EDS analysis, on scaning electron microscope the morphology of powder particles was evaluated and by differential scanning calorimetry (DSC) the temperature of exothermic intermetallic reaction was determined. Furthermore a bulk intermetallic sample was sintered by spark plasma sintering process (SPS).
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The preparation and evaluation of intermetallic exothermic metallic blends
 Mynarčík, Pavel ; Moravčík, Igor (referee) ; Jan, Vít (advisor)
During exothermic reactions a significant amount of heat is released. This heat can be further utilized for heating up chemical substances, chemical reaction initiation or welding. The first part of this thesis contains survey of thermodynamics and thermodynamics and thermochemistry of exothermic reactions, overview of commonly used exothermic processes as thermites and NanoFoil, summary of intermetallic systems and possibilites of powder metallurgy as a fabrication process of exothermic powder blends. Based on the survey part is designed experimental powder blend obtained by powder metallurgy. 18 powder samples were analysed; chemical composition was obtained by XRD and EDS analysis, on scaning electron microscope the morphology of powder particles was evaluated and by differential scanning calorimetry (DSC) the temperature of exothermic intermetallic reaction was determined. Furthermore a bulk intermetallic sample was sintered by spark plasma sintering process (SPS).
Detailed record

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