Influence of composition on the structure and properties of SrO–Sb2O3–P2O5 low-melting sealing glasses

Abstract

SrO-Sb 2 O 3 -P 2 O 5 glass system was prepared by high temperature melting method. The effects of Sb 2 O 3 and P 2 O 5 content on the structure, thermal behavior and chemical durability of the glasses were studied by infrared spectrometer, thermal dilatometer, differential thermal analyzer and constant temperature water bath heating. It can be concluded that the characteristic temperatures of the glasses increased firstly and then decreased with the increasing of Sb 2 O 3 content, whereas the tendency of the coefficient of thermal expansion (CTE) varied inversely. The crystallization ability of the glasses was significantly increased and the water resistance was reduced for Sb 2 O 3 content of 35 mol % and 40 mol %. The glasses with 20 mol %, 25 mol % and 30 mol % Sb 2 O 3 showed better performance in every respect than the others and the glasses containing 25 mol % Sb 2 O 3 , characterized by the best performance, can be chosen as host glasses for further research.