Effect of addition of SiO2 and Al2O3 on the dielectric properties of basalt glasses

Abstract

The present research focuses on the influence of SiO2 and Al2O3 additives on the structure and dielectric properties of basalt glasses. Upon the introduction of SiO2 and Al2O3, all the prepared basalt glasses were found to exhibit a non-crystalline nature. The initial dielectric constant of the basalt glass without the addition of SiO2 and Al2O3 was 7.893. However, as the content of SiO2 and Al2O3 increased, the dielectric constant of the basalt glasses initially decreased, but then started to rise. Remarkably, the lowest dielectric constant, achieved with the addition of 1 wt% Al2O3, was measured at 6.561. Similarly, the lowest dielectric constant, attained with the addition of 1 wt% SiO2, was recorded at 6.368. This value was lower than that produced by Al2O3 addition. These findings provide a new perspective on the dielectric properties of basalt glasses and continuous basalt fibers.