Date of Award
Spring 1975
Document Type
Thesis - Restricted
Degree Name
Master of Science (MS)
Department
Mechanical Engineering
Abstract
The development of solution growth techniques for alloy crystals has created a need for comprehensive and more accurate thermodynamic data, especially phase diagrams of liquid-solid equilibria. The experimental determination of phase diagrams including tie lines can be prohibitively time consuming. Consequently many attempts have been made at developing liquid solution models that can provide a general understanding of binary, pseudo-binary, and even ternary systems in the hope of using such models to calculate phase diagrams from the more easily determined thermodynamic data. In this thesis the commonly used expressions for the chemical potentials, as well as generalizations of these, are used to fit the liquidus lines of a number of "line compounds" belonging to different chemical families. It was found that the most commonly used models were not able to satisfactorily obtain a "good" fit for the systems considered here in the sense of simultaneously predicting the right enthalpies and entropies of formation of the compounds and at the same time yielding a sufficiently low minimum in the standard deviation between the calculated and observed liquidus points.
Recommended Citation
Abu-Judom, David N., "Simultaneous Fit of Liquidus Lines & Gibbs Free Energies of Formation of Crystalline Compounds Using Several Liquid Solution Models" (1975). Master's Theses (1922-2009) Access restricted to Marquette Campus. 3872.
https://epublications.marquette.edu/theses/3872