Repozytorium publikacji - Politechnika Gdańska

Ultrafast high-temperature sintering (UHS) is an innovative sintering technique that can densify ceramics in a few seconds, dramatically reducing the carbon footprint and firing costs. In this work, the feasibility of applying UHS in Gd-doped ceria (GDC) and GDC-Er-stabilized bismuth oxide (ESB) composite powders was investigated. At high UHS currents (22-24 A), a fully dense GDC sample with a large grain size was obtained. Nonetheless, most of the GDC pellets exhibited micro/macro cracks, which were reduced by lowering the sample thickness. Moreover, the GDC-ESB composite sample exhibits no cracks or fragmentation at all, thanks to ESB as a sintering aid. This type of sample was further characterized from an electrochemical and electromechanical point of view. The GDC-ESB material displays an ionic conductivity value of ~1.5 x 10−2 S/cm at 600 °C and frequency-stable (0.1-350 Hz) room temperature electrostriction strain coefficient of ~10−18 (m/V)2.

Autorzy

• Ahsanul Kabir,
• Bartłomiej Lemieszek link otwiera się w nowej karcie ,
• dr hab. inż. Jakub Karczewski link otwiera się w nowej karcie ,
• Emanuele De Bona,
• Maxim Varenik,
• dr hab. inż. Sebastian Molin link otwiera się w nowej karcie ,
• Mattia Biesuz