Electrode Material Effect on the Flash Ignition in Soda-Lime Silicate Glass

The need for sustainable solutions to reduce the carbon footprint of the ceramics and glass industry leads towards the development of new electric current-assisted technologies. Flash sintering-like processes in glasses allow a reduction of the softening temperature and could pave the way for new sh...

Full description

Bibliographic Details
Main Authors: Mattia Cipriani, Vincenzo M. Sglavo, Gian Domenico Sorarù, Mattia Biesuz
Format: Article
Language:English
Published: MDPI AG 2021-02-01
Series:Ceramics
Subjects:
Online Access:https://www.mdpi.com/2571-6131/4/1/7
Description
Summary:The need for sustainable solutions to reduce the carbon footprint of the ceramics and glass industry leads towards the development of new electric current-assisted technologies. Flash sintering-like processes in glasses allow a reduction of the softening temperature and could pave the way for new shaping technologies. Herein, we investigated the flash transition in soda-lime silicate glass using two different electrode materials, silver, and platinum. The high dielectric strength registered on samples tested with platinum electrodes undergoes a significant reduction when silver is used. In other words, in the case of silver electrodes, the flash ignition takes place at a lower onset field. Moreover, the Joule heating developed during the process can be turned from being highly inhomogeneous with Pt electrodes to homogeneous when Ag electrodes are used.
ISSN:2571-6131