Počet záznamů: 1  

Microstructure of Zirconia-Based Sol-Gel Glasses Studied by SANS

  1. 1. 0454103 - UJF-V 2016 RIV PL eng J - Článek v odborném periodiku
    Ryukhtin, Vasyl - Strunz, Pavel - Kopitsa, G. P. - Ezdakova, K. V. - Gubanova, N. N. - Ivanov, V. K. - Baranchikov, A. Y. - Angelov, Borislav - Feoktistov, A. - Pipich, V. - Levinský, P.
    Microstructure of Zirconia-Based Sol-Gel Glasses Studied by SANS.
    Acta Physica Polonica. A. Roč. 128, č. 4 (2015), s. 582-584. ISSN 0587-4246.
    [ISPMA 13 - 13th INTERNATIONAL SYMPOSIUM ON PHYSICS OF MATERIALS. Praha, 31.08.2014 - 04.09.2014]
    Grant CEP: GA ČR GB14-36566G; GA MŠk LM2011019
    Institucionální podpora: RVO:61389013 ; RVO:61389005
    Klíčová slova: sol-gel method * SANS * USANS
    Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
    Impakt faktor: 0.525, rok: 2015

    Zirconia-based bulk glasses were prepared for the first time by sol-gel method. Such materials are very promising for application as photochromic devices, catalytic systems, chemical sensors, lasers and other nonlinear optics devices. Obtained transparent and semi-transparent materials were studied by small and ultra-small angle neutron scattering (SANS and USANS) methods. As evidenced by SANS, morphology of zirconia glasses is very sensitive to parameters of sol-gel synthesis, e.g. temperature and concentration of reactants. SANS data correlates rather well with surface porosity data. Increasing water concentration in reaction mixtures containing zirconium propylate leads to a significant increase in fractal cluster size, while decrease of the temperature results in an increase of the fractal dimension. The obtained results indicate that parameters of the microstructure and consequently physical properties of zirconia glasses can be effectively controlled by parameters of synthesis.
    Trvalý link: http://hdl.handle.net/11104/0254799