Optimization mechanism and high-temperature properties of Al2O3/Cu-reinforced sealing glass

Abstract

As a promising insulating material, the mechanical properties of sealing glass are important to improve, especially in terms of toughness and strength, which can be optimized by designing composites. In this paper, alumina and copper spherical particles were added to glass to explore the mechanism of strengthening and toughening. Although the attempt to add metal particles into glass was limited by oxidation, the addition still had a stunning optimization effect. Indentation tests, compressive tests and finite element simulations were carried out to determine the fracture toughness, compressive strength and Young's modulus to demonstrate the performance of the material. The studies we have performed show that the embedding of both alumina and copper can effectively optimize the glass, but copper has a stronger effect due to its toughness. This study comprehensively validates a technique for improving the toughness of glass materials by embedding metal particles, which contributes to the application of glass in more extreme environments.