Effect of SiO2 content on the sintering kinetics, microstructures and properties of BaO-Al2O3-B2O3-SiO2 glass-ceramics for LTCC application

The SiO2 content had a significant influence on the microstructure, mechanical, thermal, and electrical properties of BaO-Al2O3-B2O3-SiO2 glass-ceramics. The sintering kinetics suggested that the SiO2 content changed the activation energy and affected the sintering process significantly. XRD analysi...

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Bibliographic Details
Published in:Journal of alloys and compounds 2017-11, Vol.725, p.1091-1097
Main Authors: Li, Bo, Li, Wei, Zheng, Jingguo
Format: Article
Language:English
Subjects:
Aluminum oxide
Barium oxides
Boron oxides
Ceramics
Change detection
Coefficient of variation
Cristobalite
Electrical properties
Glass ceramics
Glass-ceramic
Kinetics
LTCC
Mathematical analysis
Mechanical properties
Microstructure
Modulus of elasticity
Phase transitions
Silicon dioxide
Sintering
Sintering kinetics
Thermal expansion
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Summary:The SiO2 content had a significant influence on the microstructure, mechanical, thermal, and electrical properties of BaO-Al2O3-B2O3-SiO2 glass-ceramics. The sintering kinetics suggested that the SiO2 content changed the activation energy and affected the sintering process significantly. XRD analysis identified that with increasing SiO2 content, the major crystal phase was changed from sanbornite to quartz and the minor phase cristobalite was precipitated. The change of vibrational modes detected by Raman spectrum was in accordance with the results of XRD. Owing to the variation of crystal phase content, the coefficient of thermal expansion was increased. Moreover, a modified model was established for calculating CTE values, which were consistent with experimental data. Meanwhile, the flexural strength and the Young's modulus remarkably increased from 67 to 150 MPa and 45–66 GPa, respectively. BABS glass-ceramic with 50 wt% SiO2 showed excellent characteristics: σ = 150 MPa, E = 66 GPa, CTE = 13.37 × 10−6/°C, εr = 6.0, tanδ = 6.4 × 10−4, indicating its potential for CBGA package. •The sintering kinetics of BABS glass-ceramic was investigated.•SiO2 will change the activation energy and affect the sintering process significantly.•The theoretical CTE calculated from a modified model was consistent with experimental data.•SiO2 can remarkably enhance the mechanical proprieties of BABS glass-ceramic.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2017.07.251