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Information × Registration Number 0217U002927, 0117U003407 , R & D reports Title Control of the ceramics structure based on zirconia by influencing on the mass transfer mechanisms during sintering. popup.stage_title Head Lakusta Marharyta Valeriyivna, Registration Date 26-12-2017 Organization A.A. Galkin Physics and Engineering Institute of National Academy of Science of the Ukraine popup.description2 Objects of research: oxide nanopowders of ZrO2-3 mol% Y2O3 (3Y-TZP) and 3Y-TZP nanopowders with SiO2, GeO2, SnO2 (various concentrations 0.2, 1, 2, 5 wt%), their structure and state of the surface, phase composition, agglomeration degree. Purpose: study of the influence of various impurities on the structure and characteristics of nanopowders of tetragonal zirconia for the improvement (activation / intensification) of the processes of sealing ceramic materials. Methods of investigation: XRD analyses, BET method, SEM and TEM, DSC, IRS. Nanopowders of tetragonal zirconia 3Y-TZP with SiO2, GeO2, SnO2 additives were obtained by the co-precipitation method. The influence of these impurities, depending on their type and concentration on the structural characteristics of nanopowders of tetragonal zirconia (phase and chemical composition, particle size and their specific surface area, structure) and on the structure formation of the three-component composite systems based on tetragonal zirconia have been studied in detail by the methods of XRD, TEM, DSC and IRS. It was found that additives cause a decrease in the agglomeration degree, the particles size of nanopowders and lead to a significant change in the parameters of fine structure. Thus, the chemical modification of nanopowders 3Y-TZP, which has caused changes in the characteristics of nanopowders of tetragonal zirconia, can have a significant effect on both diffusion phenomena and processes of mass transfer during the sintering. Product Description popup.authors Синякіна С.А. Шило А.В. popup.nrat_date 2020-04-02 Close