Location
Innovation Lab Atrium
Start Date
4-3-2025 10:00 AM
End Date
4-3-2025 11:30 AM
Presentation Date
3 April 2025, 10:00am - 11:30am
Biography
Elizabeth Pritchett is currently a Graduate Research Assistant pursuing a Ph.D. in Ceramic Engineering at Missouri University of Science and Technology. She is conducting research on high-entropy carbides and determining their thermal transport mechanisms under the guidance of Dr. Bill Fahrenholtz. Her project is a part of a multidisciplinary university research initiative where she is collaborating with researchers from Duke University, The Pennsylvania State University, and University of California, Irvine. Elizabeth earned her Bachelor of Science degree in Ceramic Engineering from Colorado School of Mines in May 2024.
Meeting Name
2025 - Miners Solving for Tomorrow Research Conference
Department(s)
Materials Science and Engineering
Document Type
Poster
Document Version
Final Version
File Type
event
Language(s)
English
Rights
© 2025 The Authors, All rights reserved
Included in
Microstructural Evolution of High-Entropy Carbide Ceramics
Innovation Lab Atrium
Comments
Advisor: William Fahrenholtz
Abstract:
High entropy carbides (HECs) are a novel class of ultra-high temperature ceramics that are remarkable for having melting temperatures above 3000°C and retaining strength at 2000°C or higher. A knowledge gap of structure-property relationships of HECs exists for their nonstoichiometric single-phase formation and microstructural evolution. This research focuses on a novel composition, (Hf, Mo, Nb, Ta, Zr)C, with varying contents of Zr and carbon vacancies, both of which affect the microstructure and thermal properties. (Hf, Mo, Nb, Ta, Zr)C was synthesized by carbo-thermal reduction then densified by direct current sintering. The compositions had equimolar amounts of Hf, Mo, Nb, and Ta with Zr content varying from 0-20 atom percent. Scanning electron microscopy, energy dispersive spectroscopy, and x-ray diffraction were used to determine compositional homogeneity, relative density, and phases present. Hardness was measured and compared between compositions.