|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||High-Temperature Systems for Energy Conversion and Storage
||Effect of Additives on Densification and Thermal Conductivity of Barium Zinc Tantalate Ceramics
||Swathi Manivannan, P.Kumar Sharma, Tanjore V. Jayaraman, Dibakar Das
|On-Site Speaker (Planned)
Ba(Zn<sub>1/3</sub>Ta<sub>2/3</sub>)O<sub>3</sub> (BZT), which is known to exhibit high dielectric constant and high quality factor is an important material for RF window application in fusion reactor. Density and thermal conductivity of the dielectric ceramic plays a vital role for such application. In the present study, effect of chromium oxide (Cr<sub>2</sub>O<sub>3</sub>) and iron oxide (Fe<sub>2</sub>O<sub>3</sub>) addition on densification and thermal conductivity of BZT ceramics have been investigated. Microwave sintering of BZT-x Cr<sub>2</sub>O<sub>3</sub> (x = 1 mol.%) and BZT-x Fe<sub>2</sub>O<sub>3</sub> (x = 2 mol.%) has resulted in 97% of the theoretical density (TD) at a lower temperature of 1400°C as compared to conventional sintering at 1600°C for pure BZT. Thermal conductivity of BZT ceramic was measured using laser flash technique and correlated with phonon modes using Raman spectroscopy.
||Planned: A print-only volume