Alumino-silicate Glass - Material Information

Alumino-silicate glass is a highly engineered material known for its exceptional combination of chemical stability, thermal resistance, and mechanical integrity. With its capacity to withstand aggressive environments and retain optical transparency, this glass-ceramic plays a pivotal role in demanding filtration and separation systems.

Material Overview

Composed primarily of silica (SiO?) and alumina (Al2O3), and modified with oxides such as CaO, MgO, and BaO, alumino-silicate glass forms a robust glass-ceramic network. The material develops crystalline phases like mullite and anorthite upon heat treatment, enhancing mechanical and dielectric properties. Plasma-sintered samples demonstrate high relative permittivity and a low dielectric loss factor across a wide frequency range, making them ideal for insulation and thermal management [(Biswal & Mishra, 2022)].

Applications and Advantages

Thanks to its high flexural strength, low porosity, and thermal shock resistance, alumino-silicate glass is widely used in filtration systems, high-temperature insulation, and chemically aggressive environments. Experimental studies have shown these materials to retain integrity after repeated thermal cycling at 600 °C and above [(Aliyah et al., 2020)]. Additionally, their resistance to hot and cold acids (except HF) and alkaline solutions up to pH 9 makes them suitable for chemical process filtration. The finely controlled pore structure allows efficient removal of particulates as small as 30??m from liquids or gases.

Goodfellow Availability

Goodfellow supplies alumino-silicate glass in high-purity formats, suitable for academic and industrial R&D. Custom dimensions and technical support are available to meet specific filtration or structural requirements.

Explore Alumino-silicate Glass (SiO? 57 / Al2O3 36 / CaO / MgO / BaO) and other advanced materials in Goodfellow’s online catalogue: Goodfellow product finder.

References

• Biswal, B., & Mishra, D. K. (2022). Dielectric properties of alumino-silicate ceramics synthesized by plasma sintering. *Ceramics International*, 48(4), 5212–5219.
• Aliyah, L. H., Izzat, B. M., Hasmaliza, M., & Katrina, A. T. (2020). Effect of mechanical properties on sintered lithium aluminosilicate glass ceramic and its thermal shock resistance properties. *AIP Conference Proceedings*, 2267(1), 030006.
• de Andrade, M. J., Halmenschlager, C. M., Lima, M. D., & Bergmann, C. P. (2005). Chemical resistance of silicate glass-ceramics. *Particulate Science and Technology*, 23(4), 393–402.
• Kim, E. S., & Yeo, W. J. (2012). Thermal properties of CaMgSi?O? glass–ceramics with Al2O3. *Ceramics International*, 38(6), 5111–5117.
• Zhaowen, W. (2007). Effects of SiC and MgO on alumina-based ceramic foams filters. *Materials Research*, Northeastern University.