Interrupted heating DTA for liquidus temperature determination of Ag–Cd–In alloys

Kasi Gajavalli (1) , Georges Mikaelian (2) , Marc Barrachin (1) , Alexandre Decreton (1) , Evelyne Fischer (3) , Jacques Rogez (2) , Pierre Benigni

1 IRSN/PSN-RES/SAG/LETR - Laboratoire d'Etude du corium et du Transfert des radioélèments
2 IM2NP - Institut des Matériaux, de Microélectronique et des Nanosciences de Provence
3 THERMODATA - THERmodynamique et MAtériaux

An Ag-Cd-In alloy is used as the control rod material in most Pressurized Water Reactors (PWR). Despite this important application, the phase diagram of the Ag-Cd-In ternary system remains largely unknown especially the phase equilibria involving the liquid phase in the Cd and In rich regions. In this work, the 60 at.% In isopleth section is investigated by Differential Thermal Analysis (DTA). The results of the classical protocol at constant heating and cooling rates are compared with those obtained using an Interrupted Heating (IHDTA) method. It is shown that this last protocol allows to strongly reduce the uncertainty on the liquidus temperature determination.

Domaines: Chimie; Matériaux

Kasi Gajavalli, Georges Mikaelian, Marc Barrachin, Alexandre Decreton, Evelyne Fischer, et al.. Interrupted heating DTA for liquidus temperature determination of Ag–Cd–In alloys. Journal of Thermal Analysis and Calorimetry, 2019, 135 (4), pp.2209-2219. ⟨10.1007/s10973-018-7442-1⟩. ⟨hal-02557908⟩