Thermodynamics of Bulk Metallic Glass Formers

Author

Colby Stoddard , '23

Date of Award

Spring 2023

Document Type

Restricted Thesis

Terms of Use

© 2023 Colby Stoddard. All rights reserved. Access to this work is restricted to users within the Swarthmore College network and may only be used for non-commercial, educational, and research purposes. Sharing with users outside of the Swarthmore College network is expressly prohibited. For all other uses, including reproduction and distribution, please contact the copyright holder.

Degree Name

Bachelor of Arts

Department

Physics & Astronomy Department

Abstract

We performed scanning calorimetry measurements on four bulk metallic glass formers, Pt₆₀Cu₂₀P₂₀, Pt₅₇Cu₂₃P₂₀, and Zr_52.5Cu_17.9Ni_14.6Al₁₀Ti₅. We also performed step scan measurements on the liquid, crystal, and glassy phases of each of these alloys, as well as Pd_42.5Cu₂₇Ni_9.5P₂₁. From these measurements, we calculated the heat capacity of each phase, as well as the difference in entropy, enthalpy, and Gibbs free energy between the liquid and crystal phases. We find that the heat capacity of the liquid phase in the Pt_xCu_80−xP₂₀ family of glass formers deviates from the commonly assumed Kubaschewski Equation, and we find evidence to suggest that the heat capacities of glass formers that have previously been measured may also deviate from the Kubaschewski Equation.

Recommended Citation

Stoddard, Colby , '23, "Thermodynamics of Bulk Metallic Glass Formers" (2023). Senior Theses, Projects, and Awards. 320.
https://works.swarthmore.edu/theses/320