Electric Field Effects During Solidification of the Ternary Oxide Eutectic Al<sub>2</sub>O<sub>3</sub>-YAG-ZrO<sub>2</sub> - Archive ouverte HAL
Article Dans Une Revue Crystal Research and Technology Année : 2018

Electric Field Effects During Solidification of the Ternary Oxide Eutectic Al2O3-YAG-ZrO2

Résumé

LHPG and zone melting solidification of Al2O3‐YAG‐ZrO2:Y eutectic samples is performed in order to investigate intrinsic and extrinsic electric field phenomena. An intrinsic electric field is measured during solidification. Its decay with distance from the interface, and its relaxation with time, show that it is induced by the accumulation of positive electric charges at the solid‐liquid interface, that diffuse away when pulling is stopped. Under extrinsic electric field, a significant modification of the eutectic phase diagram is observed. The charged diffusive boundary layer interacts with the field and the microstructure is impacted. Those observations suggest that the segregating species is zirconium ions.

Domaines

Matériaux
Fichier non déposé

Dates et versions

hal-04733421 , version 1 (12-10-2024)

Licence

Identifiants

Citer

Maya Cherif, Pierre-Yves Hicher, Omar Benamara, Kheirreddine Lebbou, Raphaël Haumont, et al.. Electric Field Effects During Solidification of the Ternary Oxide Eutectic Al2O3-YAG-ZrO2. Crystal Research and Technology, 2018, 53 (5), pp.1700251. ⟨10.1002/crat.201700251⟩. ⟨hal-04733421⟩
19 Consultations
0 Téléchargements

Altmetric

Partager

More