Journal
CERAMICS INTERNATIONAL
Volume 43, Issue -, Pages S292-S295Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2017.05.190
Keywords
Glass-ceramic; CuB2O4; ULTCC; Microwave dielectric properties
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Funding
- National Natural Science Foundation of China (NSFC) [61501438]
- Ministry of Science and Technology of China [2015AA034102]
- Shanghai Sailing Program [15YF1413700]
- Youth Innovation Promotion Association CAS
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CuO-B2O3-Li2O (CBL) glass-ceramic with a composition of 32 wt% CuO - 63 wt% B2O3 - 5 wt% Li2O was prepared through conventional glass-ceramic route. The CBL glass-ceramic could be densified well by sintering at 625 degrees C for 30 min. The X-Ray diffraction (XRD) and transmission electron microscopy (TEM) analysis indicated that the CuB2O4 phase was dominated in the sintered glass-ceramic, which showed excellent microwave dielectric properties with epsilon(r) = 5.84, Qxf = 10120 GHz (at 13.44 GHz); and tau(f) = -33 ppm/degrees C. Furthermore, the CBL material is chemically compatible with both silver (Ag) and aluminuni (Al) electrodes at their sintering temperatures. These properties indicate that the CBL glass-ceramic might be a promising ultra-low temperature co-fired ceramic (ULTCC) material for packaging substrate applications.
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