Anzeige
Erschienen in:
01.09.2018
Low permittivity MgO–xB2O3–yBaCu(B2O5) microwave dielectric ceramics for low temperature co-fired ceramics technology
Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 21/2018
EinloggenAktivieren Sie unsere intelligente Suche, um passende Fachinhalte oder Patente zu finden.
Wählen Sie Textabschnitte aus um mit Künstlicher Intelligenz passenden Patente zu finden. powered by
Markieren Sie Textabschnitte, um KI-gestützt weitere passende Inhalte zu finden. powered by
Abstract
MgO–xB2O3–yBaCu(B2O5) ceramics were prepared by a solid-state reaction method. The phase composition and microwave dielectric properties of ceramics were studied. The MgO-rich ceramics (x = 1/4, 1/3 and 1/2) contain MgO and Mg3B2O6. But the B2O3-rich ceramics (x = 1, 2 and 3) contain B2O3, MgB2O4 and Mg2B2O5. The MgO–xB2O3 (x = 1/4, 1/3, 1/2, 1, 2 and 3) ceramics show high Q × f of 41,754–105,852 GHz, low εr of 4.24 ~ 7.68 and negative τf values of − 56 to − 30 ppm °C−1 with tuning the x values. The BaCu(B2O5) (BCB) was used to reduce the sintering temperature of MgO–2B2O3 ceramic. The MgO–2B2O3-4 wt% BCB ceramic sintered at 925 °C exhibits good microwave dielectric properties with high Q × f of 30,589 GHz, low εr of 4.8 and negative τf value of − 40 ppm °C−1. Importantly, MgO–2B2O3-4 wt% BCB ceramic has a good chemical compatibility with Ag, which illustrates that it is a candidate material for low temperature co-fired ceramic devices.