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Information × Registration Number 0224U001844, (0121U107939) , R & D reports Title Study of phase relations and properties of phases formed in multicomponent refractory oxide systems containing Al2O3, TiO2, Ln2O3 (where Ln - La, Er, Dy, Yb) and creation of physicochemical foundations for development of new multicomponent materials based on ZrO2-Y2O-CeO2-Al2O3 system, glasses and fibers from melted basalt rocks popup.stage_title Вивчення фазових співвідношень і властивостей утворюваних фаз в багатокомпонентних тугоплавких оксидних системах, що вміщують Al2O3, TiO2, Ln2O3 ( де Ln - La, Er, Dy, Yb) і створення фізико-хімічних засад розробки нових багатокомпонентних матеріалів на основі системи ZrO2-Y2O3-CeO2-Al2O3 та стекол і волокон з розплавів гірських порід типу базальтів Head Dudnik Olena V., Registration Date 31-01-2024 Organization Frantsevich Institute for Problems of Materials Science National Academy of Science of Ukraine popup.description1 Investigation of hase relations and construction of phase diagrams’ elements for ternary refractory oxide systems Al2O3–TiO2–La2O3 and ZrO2 –lanthanides oxides of yttrium subgroup; study of composites consolidation peculiarities from nanocrystalline and ultrafine powders of the ZrO2 – Y2O3 – CeO2 – Al2O3 system to create new materials based on ZrO2 and Al2O3 for functional, structural and medical purposes; conducting research on the development of new compositions of silicate raw materials for the production of rocks-based glasses and fibers. popup.description2 When performing the theme for the first time: 1. A complete phase diagram of the Al2O3–TiO2–La2O3 system is constructed. The phase equilibria in the ZrO2–Ln2O3 systems (Ln = ds, Er, Yb) were analyzed and the isothermal sections of the ternary systems ZrO2–Dy2O3–Er2O3, ZrO2–DyO2–Yb2O3, ZrO2–Er2O3–Yb2O3 at 1400 °C were constructed. Constructed phase diagrams are necessary for the creation of modern materials of structural and functional purpose. 2. The influence of the heat treatment temperature of the initial powders on the physical and mechanical properties of composite materials of the ZrO2–Y2O3–CeO2–Al2O3 system based on ZrO2 and Al2O3 /ZrO2 (Y2O3, CeO2) was determined. Research results are the basis of microstructural design of high-tech construction materials. 3. The influence of B2O3, ZrO2, Hf2O3 and Al2O3 on the properties of melts from basalt-type rocks and glasses and fibers based on them was established. For the first time, the protective properties of composite concrete with different amounts of basalt-boron fiber to improve the radiation protection of spent nuclear fuel storage containers were investigated. Product Description popup.authors Sergey N. Lakiza Marek Iryna O. Chuvashov Yuriy M. Tishchenko Yana S. Red'ko Victor P. Diduk Iryna I. Ruban Olexey K. Makudera Alina O. Smyrnova-Zamkova Mariia Yu. Koshelenko Natalia I. Krasnikova Kateryna S. Goncharenko Maria R. Ivanytsky Stanislav G. Trofimova Tamara P. Khomenko Olena V. Dudnik Olena Victorivna Yaschenko Olga M. Rayisa S. Lisok popup.nrat_date 2024-01-31 Close