Abstract
Sm2O3 additive significantly influenced the microstructure, mechanical, and electrical properties of BaO-Al2O3-B2O3-SiO2 glass-ceramics. The calculation by the whole pattern fitting method based on XRD patterns revealed that Sm2O3 additive improved the crystallization process of this tetra-system and promoted the formation of major phase quartz. The sintering kinetics showed that Sm2O3 addition markedly reduced the sintering activation energy from 406.86 kJ/mol to 391.38 kJ/mol, which benefited the sintering densification and the grain growth, and thus enhanced mechanical properties. Doping 2% Sm2O3 reinforced the flexure strength from 136.3 to 171.6 MPa and the Young’s modulus from 49.4 to 79.7 GPa. It also exhibited low dielectric constant of 5.31, low dielectric loss of 5.30 × 10-4, and high thermal expansion coefficient of 11.76 × 10-6/°C.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
