Abstract
In this paper, ultralow dielectric constant CaMgSi2O6-KBS composites (εr < 5) were fabricated via the solid-state route. The sintering temperature (ST) of CaMgSi2O6 ceramics was successfully reduced from more than 1200 °C–850 °C with assistance of the K2O–B2O3–SiO2 (KBS) glass. The impacts of KBS glass on phase compositions, microstructure, sintering activation energy and microwave dielectric properties of CaMgSi2O6 ceramics were systematically discussed. The X-ray diffraction results confirmed that the (1-x)CaMgSi2O6-xKBS composites possessed CaMgSi2O6 phase and SiO2 phase. The results of Rietveld refinement showed that the weight fraction of CaMgSi2O6 phase gradually decreased with increasing KBS glass and sintering temperature. The (1-x)CaMgSi2O6-xKBS (x = 0.5) composite sintered at 850 °C exhibits optimal microwave dielectric properties: εr = 4.58, Q × f = 13989 GHz (13.95 GHz), τf = -22.9 ppm/oC. It is a promising material for low-temperature co-fired ceramic (LTCC) applications which desire for ultralow dielectric constant materials.
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 callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
