Open AccessEffect of rare-earth oxides on thermal behavior of alumina-silica glass sealants
Author(s) -
N. S. Saetova,
D. A. Krainova,
А. В. Кузьмин
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1967/1/012006
Subject(s) - differential scanning calorimetry , ionic radius , thermal expansion , materials science , glass transition , thermal , ionic bonding , rare earth , radius , mineralogy , analytical chemistry (journal) , composite material , ion , thermodynamics , chemistry , metallurgy , polymer , chromatography , organic chemistry , physics , computer security , computer science
Thermal behavior of (62.92SiO2–4.71Al2O3–14.83Na2O–5ZrO2–12.54SrO) – 5Re2O3 (Re = Y, La, Nd, Sm) glasses with superstoichiometric additives of rare-earth oxides has been investigated by scanning differential calorimetry, high temperature optical microscopy, and dilatometry. It is found out that an increase in characteristic temperatures (glass transition temperature and temperature of half-sphere formation) is caused by decreasing the ionic radius. The value of thermal expansion coefficient changes insignificantly.