Institution: | * IRDI/DMECN/DMG/SEM, Laboratoire d'Etude de la Solidification, Centre d'Etudes Nucléaires, 85 X, 38041, Grenoble, France ** AEROSPATIALE-AQUITAINE, 33165, Saint Médard en Jalles, France |
Abstract: | Keeping planar the L/S interface during solidification and controling heat and mass transfers in the liquid phase are 2 important constraints which need to be satisfied to grow suitable single crystals. In the first part of this paper we describe performances of the MEPHISTO instrument which allows : — On line in-situ measurements of the real undercooling of a solidification front by a non-perturbative thermoelectric method. — On line supervision of convective motions influence on crystal growth. In the second part, we present the first main results obtained during the ground testing of the space mock-up and we quantify the scientific results accuracy concerning both the onset of the morphological stability and the interface response to unsteady perturbations. |