Klym, HalynaKostiv, Yuriy2018-04-122018-04-122017-12-232017-12-23Klym H. Positron annihilation lifetime spectroscopy in application to nanostructured glasses and ceramics / Halyna Klym, Yuriy Kostiv // Litteris et Artibus : proceedings, 23–25 November, 2017. — Lviv : Lviv Polytechnic Publishing House, 2017. — P. 430–431. — (9th International academic conference «Computer science & engineering 2017» (CSE-2017)).978-966-941-108-2https://ena.lpnu.ua/handle/ntb/40453Modified nanostructured Ge-Ga-Se chalcogenide glasses and oxide MgO-Al2O3 ceramics were investigated using positron annihilation lifetime spectroscopy. It was shown that crystallization process in 80GeSe2-20Ga2Se3 glasses annealed at 380°C for 25 and 50 h indicates specific free-volume transformation. It is established that water vapor modifies defects located near grain boundaries in MgO-Al2O3 ceramics sintered at 1300 °C, the process being accompanied by void fragmentation at water adsorption with further void agglomeration at water desorption after drying.430-431enceramicsglasspositron annihilationmodificationfree volumenanovoidsConference Abstract© Національний університет “Львівська політехніка”, 20172Klym H. Positron annihilation lifetime spectroscopy in application to nanostructured glasses and ceramics / Halyna Klym, Yuriy Kostiv // Litteris et Artibus : proceedings, 23–25 November, 2017. — Lviv : Lviv Polytechnic Publishing House, 2017. — P. 430–431. — (9th International academic conference «Computer science & engineering 2017» (CSE-2017)).