Influence of pre-heat treatment on glass structure and chemical strengthening of aluminosilicate glass

We consider a commercial aluminosilicate glass as an example case to obtain an understanding of the correlations between heat treatment , characteristics of chemical strengthening. Different heat treatments are performed prior to an ionic exchange process , their effects on the chemical strengthening are investigated. It is verified that pre-heating treatment is influential, increasing the generated compressive stress by similar to 10%, whereas depth of the compressive layer is observed to be remained identical regardless of heat treatment. These behaviors are able to be connected with structural evolutions observed through a Raman analysis, revealing that 4- and 3-membered ring structures are increased with proper heat-treatment. This indicates that the glass structure tends to be densified on a medium range scale by forming a smaller ring structure, which influences the stuffing effect of chemical strengthening. The stress profile of aluminosilicate glasses can be additionally engineered via heat-treatment conducted before the ionic exchange process.

Automated summary

Considering a commercial aluminosilicate glass as an example, the correlations between different heat treatments and the characteristics of chemical strengthening are investigated. The results show that pre-heating treatment has an influential effect on chemical strengthening, increasing the generated compressive stress by about 10%, while the depth of the compressive layer remains the same regardless of heat treatment. These behaviors can be connected to structural evolutions observed through a Raman analysis, indicating that densification of the glass structure on a medium range scale influences the stuffing effect of chemical strengthening. Additionally, the stress profile of aluminosilicate glasses can be engineered via heat-treatment before the ionic exchange process.