Effect of Glass Addition on the Phase Formation, Microstructures Evolution and Dielectric Properties of CCTO Ceramics for Energy Storage Capacitor

Abstract

Effect of glass addition on the phase formation and microstructural evolution of CCTO ceramics for energy storage capacitor was studied. CCTO and CCTO-borosilicate glass based ceramics (0-1 wt.%) were prepared by solid state reaction method. The powders were pressed at 250 MPa and were sintered at 1040 °C for 10 hours. XRD analysis illustrates the formation of CCTO phase with minor peaks of CuO phase for CCTO and CCTO-glass composites samples. The glass were observed to be segregated at the grain boundaries of CCTO alongside with CuO compound. The dielectric properties indicate that both εr and tan δ were reduced after the addition of glass. Thus, it shows that the borosilicate glass addition into CCTO can affect the physical and dielectric properties of CCTO ceramics.