The Effect of Processing Parameters on Properties of Bi2GeO5 Glass Ceramics

P. Kantha; S. Sirisoonthorn; Kamonpan Pengpat

doi:10.4028/www.scientific.net/AMR.55-57.437

Paper Titles

Manufacturing Process and Practical Examination for a 3D Structural Geocell Made from Recycled PET Fibers
p.421

Manufacture and Performance Evaluation of Elastic/Bamboo Wrapped Yarn
p.425

Evaluation of Manufacturing Technology and Characterization of Composite Fabric for Stab Resistant Materials
p.429

PET/PP Blend with Bamboo Charcoal to Produce Functional Composites: Evaluation of Functionalities
p.433

The Effect of Processing Parameters on Properties of Bi₂GeO₅ Glass Ceramics
p.437

Photo-Induced Superhydrophilic TiO₂ Films Deposited by DC Reactive Magnetron Sputtering at Room Temperature
p.441

Temperature Dependence of Optical Constants of Silver Film Studied by In Situ Spectroscopic Ellipsometry
p.445

Investigation of Aluminium Diffusion into an Amorphous Silicon Thin Film at High Temperature by In Situ Spectroscopic Ellipsometry
p.449

Self-Cleaning Properties of TiO₂ Films Deposited by Reactive Magnetron Sputtering Using Smooth D.C. and Pulsed D.C. Source
p.453

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 55-57The Effect of Processing Parameters on Properties...

The Effect of Processing Parameters on Properties of Bi₂GeO₅ Glass Ceramics

Abstract:

In this research, it is interesting to fabricate glass ceramics containing lead free ferroelectric crystals. The new lead free ferroelectric phase of interest is orthorhombic Bi2GeO5 which are precipitated in the BiO1.5-GeO2-BO1.5 system and studied in the region of 60 mol% BiO1.5:20 mol% GeO2: 20 mol% BO1.5. The glasses were prepared by conventional melt-quenching method. The glasses were melted separately in Pt and Al2O3 crucible in an air atmosphere. It is found that the as-received glasses were easily obtained from Al2O3 crucible while that from Pt crucible devitrification of Bi2GeO5 crystals were observed in some glasses, giving rise to an instability and difficulty in obtaining good based glasses by using this Pt crucible. The glass ceramics prepared from Pt crucible crystallized into two phases of the expected Bi2GeO5 and second phase Bi4Ge3O12 while Bi2GeO5 phase only observed in the glass ceramics prepared from Al2O3 crucible. Crystallinity and phases of the glass ceramics have a significant effect on their dielectric properties.