Analysis of the partial molar excess entropy of dilute hydrogen in liquid metals and its change at the solid-liquid transition
Name
caldwell2019_ActMaterialia_SubmittedLATEX.pdf
Description
Submitted version
Size
1.31 MB
Format
Adobe PDF
Checksum (MD5)
6c6d08a2f39deb53e6c9fe5cfbcbf0c5
Author(s)
Caldwell, Andrew Harvey
Allanore, Antoine
Date Issued
July 2019
Journal
Acta Materialia
Publisher
Elsevier BV
Citation
Caldwell, Andrew H. and Antoine Allanore. "Analysis of the partial molar excess entropy of dilute hydrogen in liquid metals and its change at the solid-liquid transition." Acta Materialia 173 (July 2019): 1-8.
Version
Original manuscript
Abstract
A systematic change in the partial molar enthalpy of mixing (Δh¯Hmix) and partial molar excess entropy (Δs¯Hex) for dilute hydrogen-metal systems at the solid-liquid transition is reported. Expressions for Δh¯Hmix and Δs¯Hex are derived from the Fowler model of hydrogen solubility, and the change in Δs¯Hex at melting is bounded. The theoretical bound is in agreement with measured data. A connection is made between the change in Δs¯Hex and short range order in the metal-hydrogen system.
MIT Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
MIT Materials Research Laboratory
Terms of Use
Creative Commons Attribution-NonCommercial-NoDerivs License
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1016/j.actamat.2019.02.016
