Národní úložiště šedé literatury Nalezeno 4 záznamů.  Hledání trvalo 0.01 vteřin. 
Transformations through pseudomorphosis of asbestos minerals in thermally processed asbestos-containing materials investigated through SEM/EDS and micro-Raman spectroscopy: implications for recycling of hazardous wastes
Viani, Alberto ; Gualtieri, A. F. ; Mácová, Petra ; Pollastri, S.
Asbestos-containing materials, extensively used in the past in many European countries, are now considered hazardous wastes of great concern. It has been proved that inertization can be obtained via thermal treatment above 1100 °C. This solution relies upon the scientific evidence that all asbestos minerals at high temperature transform into stable crystalline silicates via a solid state recrystallization process
Characterization of by-products from the combustion of solid fuels with SEM/EDS and micro-Raman spectroscopy
Šašek, Petr ; Viani, Alberto ; Mácová, Petra ; Pérez-Estébanez, Marta ; Černá, M.
The solid residues from the combustion currently represent a problem that needs to be addressed. Quality products from combustion of solid biomass and coal is significantly different, may contain heavy metals and therefore their application difficult. Total used 4 samples of solid residues from the combustion of solid fuels, where two samples consisted of ash from the combustion of coal, respectively lignite and two samples were made with ash from the combustion of biomass, namely straw and hay. The microscopic analysis was used a scanning electron microscope (SEM) and energy dispersive spectrometry (EDS) and Micro Raman. The qualitative analysis was used in addition X-ray diffraction. Within the microscopic analyses were tested superficially different types of materials.
Z-phase in Cr-Nb-N system studied by analytical electron microscopy
Buršík, Jiří ; Kroupa, Aleš
In this work we study the Z-phase in model Cr-Nb-N alloys by means of analytical electron microscopy (SEM and TEM).
Mechanical alloying of Fe-X (X=Al, Mo, Ni) powders studied by analytical electron microscopy
Buršík, Jiří ; Jirásková, Yvonna
Mechanical alloying via ball milling represents a relatively simple way of preparing materials with a micro-to nanograin crystalline and/or amorphous metastable structure.

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