Abstract
New thermodynamic information on Mg–Pd alloys has been obtained in the Mg-rich part by using a high-temperature direct drop calorimeter and a high sensitive Differential Scanning Calorimeter (DSC). The calorimetric results have been validated by X-ray Powder Diffraction and Scanning Electron Microscopy coupled with Electron Probe Microanalysis analyses. The following values (kJ∙mol-atom−1) of the enthalpy of formation at 27 °C were obtained: −(28.2 ± 1) for Mg6Pd and −(39.5 ± 2.8) for Mg5Pd2 intermetallic phases.DSC has been employed to determine the transformation temperatures in the Mg-rich region: the congruent melting behaviour of the Mg6Pd and Mg5Pd2 phases was confirmed at a temperature of (568 ± 1) °C and (691 ± 1) °C, respectively and for the L ⇄ (Mg) + Mg6Pd eutectic reaction, a temperature of (530 ± 1) °C was measured. In addition, a melting enthalpy of ΔfusH° = (7.4 ± 0.1) kJ∙mol-atom−1 and of (8.3 ± 0.1) kJ∙mol-atom−1 for Mg6Pd and Mg5Pd2, respectively, was obtained.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
