Systematic investigation reveals improved sintering and physical properties in glass-ceramics, suggesting enhanced suitability for low-temperature co-firing with Al2O3.
A systematic investigation was conducted into the effects of varying Al2O3 and SrO contents on the structure, sintering kinetics, crystallization patterns, and properties of the SrO-BaO-ZnO-MgO (RO)-B2O3-Al2O3-SiO2 (RBAS) system. This glass-ceramic demonstrates effective applicability for low-temperature co-firing of alumina ceramics. Increasing Al2O3 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% Al2O3 sintered at 800 °C exhibited optimal properties: a well-matched CTE of 7.45 × 10−6 K−1, a high flexural strength of 130.58 MPa, and excellent chemical stability. Furthermore, it demonstrated excellent compatibility when co-sintered with an Al2O3 substrate.
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Xie et al. (2025) studied this question.
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