Abstract : The microstructural evolution and densification kinetics of a-alumina were investigated and compared between conventional sintering and microwave sintering at 2.45 GHz in the intermediate stage, where the microwave seems to be the most efficient. Based on classical kinetics models, the calculated kinetics parameter demonstrated that the densification is greatly influenced by the presence of an electromagnetic field during sintering. It was assumed that the grain boundary diffusion is enhanced by an electromagnetic pressure induced by the microwave.
https://hal-emse.ccsd.cnrs.fr/emse-01063760 Contributor : Géraldine Fournier-MoulinConnect in order to contact the contributor Submitted on : Friday, August 27, 2021 - 4:22:56 PM Last modification on : Monday, October 18, 2021 - 4:22:07 PM Long-term archiving on: : Sunday, November 28, 2021 - 6:47:47 PM