Search academic texts

Information × Registration Number 0220U104527, 0119U101456 , R & D reports Title Research and development of the immobilization method of liquid RAW NPP of Ukraine in glass-containing matrices and determination of the physical and mechanical properties of the compounds obtained. popup.stage_title Head Shkuropatenko Volodymyr A., Registration Date 21-12-2020 Organization National Science Center "Kharkiv Institute of Physics and Technology" popup.description2 Investigations of strength, density, structure and phase composition of samples of glazed simulators of liquid RW in the form of a bottom residue were carried out. Samples of glass matrices were made both with the addition of crushed glass of industrial grades, and with the use of glass-forming additives: oxides of silicon, lead, aluminum and others. It was shown that the most optimal matrix for immobilization of the bottom residue simulator is a lead-borosilicate glass matrix, which is welded from a mixture of the bottom residue simulator containing sodium and boron and silicon oxide with the addition of lead oxide. Based on the results of XRD and SEM studies of lead-borosilicate matrices, it was determined that the prepared samples are X-ray amorphous, do not have crystalline inclusions and are characterized by a dense and homogeneous structure. IR spectrometric studies have shown that the maxima of the main bands of samples of lead-borosilicate matrices, associated with a silicon-oxygen glass network, become more diffuse and shift to the low-frequency region in comparison with samples of borosilicate matrices due to a decrease in the degree of connectivity of the silicon-oxygen framework. The best corrosion resistance was demonstrated by samples of a lead-borosilicate glass matrix containing 10 wt% PbO. Considering that this glass matrix contains 45 wt. % of simulators of LRW bottom residue and is characterized by high strength and corrosion resistance, it should be considered promising for solidification of LRW bottom residues.   Product Description popup.authors popup.nrat_date 2020-12-21 Close