The Effect of the Variation in Al2O3 and SrO Content on the Structure, Sintering Behavior, and Properties of SrO, BaO, ZnO, MgO-B2O3-Al2O3-SiO2 Glass-Ceramics for Use in Al2O3 Ceramic LTCC Applications
A systematic investigation was conducted into the effects of varying Al<sub>2</sub>O<sub>3</sub> and SrO contents on the structure, sintering kinetics, crystallization patterns, and properties of the SrO-BaO-ZnO-MgO (RO)-B<sub>2</sub>O<sub>3</sub>-Al<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub> (RBAS) system. This glass-ceramic demonstrates effective applicability for low-temperature co-firing of alumina ceramics. Increasing Al<sub>2</sub>O<sub>3</sub> content densified the glass network and reduced crystallinity, thereby promoting sintering densification. It led to improved acid resistance and a lower coefficient of thermal expansion (CTE). The composition with 17.50 mol% Al<sub>2</sub>O<sub>3</sub> sintered at 800 °C exhibited optimal properties: a well-matched CTE of 7.45 × 10<sup>-6</sup> K<sup>-1</sup>, a high flexural strength of 130.58 MPa, and excellent chemical stability. Furthermore, it demonstrated excellent compatibility when co-sintered with an Al<sub>2</sub>O<sub>3</sub> substrate.
Authors
- Zijun He (ORCID: https://orcid.org/0000-0001-7897-0013)
- Lei Zhao (ORCID: https://orcid.org/0000-0002-1743-2606)
- Ningning Li (ORCID: https://orcid.org/0000-0001-6879-0262)
- Feng He (ORCID: https://orcid.org/0000-0001-8603-7653)
- Junlin Xie
- Pengkai Shang
Institutions
- China Iron and Steel Research Institute Group (CN)
- Beijing University of Technology (CN)
Publication Details
- Journal
- Materials
- Published
- 2025-09-28
- DOI
- https://doi.org/10.3390/ma18194510
- Citations
- 1
- Primary Topic
- Microwave Dielectric Ceramics Synthesis
- Type
- article
- Field-Weighted Citation Impact
- 0.73