Abstract
CaO–B2O3–SiO2 (CBS) glass-ceramics containing ZrO2 were prepared by conventional melting and heat treated crystallization method. The effects of ZrO2 on the crystallization behavior, sintering characterization and dielectric properties of the glass-ceramics were analyzed respectively. The results indicated that ZrO2 addition can improve the crystallization and densification of CBS glass-ceramics. The major crystallized phase of sample with≥7wt% ZrO2 was cyclowollastonite (α-CaSiO3).It is found that the optimal sintering condition for the glass-ceramics is 770 oC for 30min. CBS glass ceramics sample with 7wt% ZrO2 shows the best sintering characterization and dielectric properties (ρ= 2.71g/cm3, εr ≈8.8,tan δ=2.36×10-3 at 1 MHz), which is supposed to be suitable for LTCC application.
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