Degree Type

Thesis

Date of Award

2013

Degree Name

Master of Science

Department

Materials Science and Engineering

First Advisor

Ralph E. Napolitano

Abstract

Here the role of thermodynamic measurements in computational materials science (with a focus on metallic glasses) is described, of which the heat capacity of the undercooled liquid is identified as a key measurement. Traditional experimental techniques for generating thermodynamic measurements are then reviewed, as well as techniques that focus on the undercooled liquid. Then the development of a levitation calorimeter is presented, and the results of applying the technique to several binary Al-based glass forming compositions is described. The enthalpy of a reactive Al-rare earth liquid was measured as well as the enthalpy of the undercooled liquid of Al-rare earth glass forming compositions. The results indicated a constant heat capacity of the liquid throughout the temperature range studied, which is discussed with respect to liquid behavior. Additionally, the containerless levitation technique enabled the in-situ formation of metastable Al-Sm phases.

DOI

https://doi.org/10.31274/etd-180810-3344

Copyright Owner

Carl Tackes

Language

en

File Format

application/pdf

File Size

174 pages

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