PENGARUH PENAMBAHAN BORON TRIOXIDE (B2O3) TERHADAP KARAKTERISTIK DIELEKTRIK KERAMIK CALCIA STABILIZED ZIRCONIA (CSZ)

Abstract

Fabrication of a ceramic dielectric CSZ (Calcia Stabilized Zirconia) with the addition of B2O3 (Boron Trioxide) has been investigated. B2O3 is varied by the composition of 0,25%; 0,5%; and 0,75% with sintering at temperature of 1100o C for 2 hours. The characterization of dielectric constant, crystal structure, and micro structure are done by using LCR meter, XRD (X-Ray Diffractometer) and SEM (Scanning Ellectron Microscope). The results show that the dielectric constant will tend to decrease with the increasing frequency. The formation of crystal structure on ceramic dielectric CSZ consists of mostly phase cubic structure and monoclinic phase structure. By adding B2O3, it makes crystal structures to be monoclinic phase and some part cubic phase. There is no pore on the structure of micro ceramic dielectric CSZ. The pores begin to form due to increment of B2O3. The value of the sintered temperature and the addition of B2O3 significantly affects the crystal and micro ceramic structure CSZ. The use of higher sintered temperature makes the B2O3 tend to highly evaporate and leave the micro structure pores.