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Article
Anisotropic Thermal Expansion in High-Entropy Multicomponent Alb2-Type Diboride Solid Solutions
International Journal of Extreme Manufacturing
  • Frédéric Monteverde
  • Mattia Gaboardi
  • Federico Saraga
  • Lun Feng
  • William Fahrenholtz, Missouri University of Science and Technology
  • Gregory Hilmas, Missouri University of Science and Technology
Abstract

High-entropy (HE) ultra-high temperature ceramics have the chance to pave the way for future applications propelling technology advantages in the fields of energy conversion and extreme environmental shielding. Among others, HE diborides stand out owing to their intrinsic anisotropic layered structure and ability to withstand ultra-high temperatures. Herein, we employed in-situ high-resolution synchrotron diffraction over a plethora of multicomponent compositions, with four to seven transition metals, with the intent of understanding the thermal lattice expansion following different composition or synthesis process. As a result, we were able to control the average thermal expansion (TE) from 1.3 x 10−6 to 6.9 x 10−6 K−1 dependingon the combination of metals, with a variation of in-plane to out-of-plane TE ratio ranging from 1.5 to 2.8.

Department(s)
Materials Science and Engineering
Publication Status
Open Access
Comments

National Science Foundation, Grant CMMI-1902069

Keywords and Phrases
  • Anisotropic Thermal Expansion,
  • Borides,
  • High-Entropy Ceramics,
  • Spark Plasma Sintering,
  • Synchrotron Diffraction,
  • Ultra-High Temperature Ceramics
Document Type
Article - Journal
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2023 The Authors, All rights reserved.
Creative Commons Licensing
Creative Commons Attribution 4.0
Publication Date
3-1-2023
Publication Date
01 Mar 2023
Disciplines
Citation Information
Frédéric Monteverde, Mattia Gaboardi, Federico Saraga, Lun Feng, et al.. "Anisotropic Thermal Expansion in High-Entropy Multicomponent Alb2-Type Diboride Solid Solutions" International Journal of Extreme Manufacturing Vol. 5 Iss. 1 (2023) ISSN: 2631-7990; 2631-8644
Available at: http://works.bepress.com/greg-hilmas/309/