Vaporization and condensation in the Al4C3-SiC system - Archive ouverte HAL
Article Dans Une Revue Journal of the European Ceramic Society Année : 2017

Vaporization and condensation in the Al4C3-SiC system

Résumé

Al4SiC4 is a refractory ceramic with a reported band gap of about 2.5 eV, making it an interesting semiconductor material for various applications in the field of energy. However, the synthesis of Al4SiC4 single crystals has so far not been investigated. In this study, the sublimation growth method is explored as a potential route for getting high quality single crystals. Combining a thermodynamic analysis with an extensive experimental approach, the vaporization and condensation phenomena in the Al4C3-SiC system are described. Experimental conditions, such as initial composition, baking temperature and temperature gradient, are investigated and demonstrated regarding the crystallization of Al4SiC4. From the results obtained, a condensed phase diagram at equilibrium is established for the molar fraction XAl4C3/(Al4C3+SiC) < 0.5, which corresponds to the suitable condition for the Al4SiC4 condensation. Indeed, Al4SiC4 single phase could be experimentally condensed either by self-nucleation or as oriented film on SiC substrates.
Fichier principal
Vignette du fichier
Vaporization and condensation in the Al4C3-SiC system_accepted.pdf (2.4 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-01620934 , version 1 (15-05-2021)

Identifiants

Citer

Hoang-Long Le-Tran, Eirini Sarigiannidou, Isabelle Gelard, Didier Chaussende. Vaporization and condensation in the Al4C3-SiC system. Journal of the European Ceramic Society, 2017, 37 (15), pp.4475 - 4482. ⟨10.1016/j.jeurceramsoc.2017.05.038⟩. ⟨hal-01620934⟩
74 Consultations
133 Téléchargements

Altmetric

Partager

More