Work

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

Year: 2025

Type: article

Abstract: 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.

Source: Materials

DOI: 10.3390/ma18194510

Authors: Junlin Xie, Ningning Li, Pengkai Shang, Zijun He, Lei Zhao, Feng He

Institutions: Beijing University of Technology, China Iron and Steel Research Institute Group

Language: English

Topic: Microwave Dielectric Ceramics Synthesis

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $3,137

Funder: China Association for Science and Technology