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.
Recommended Citation
F. Monteverde et al., "Anisotropic Thermal Expansion in High-Entropy Multicomponent Alb2-Type Diboride Solid Solutions," International Journal of Extreme Manufacturing, vol. 5, no. 1, article no. 015505, Institute of Physics - IOP Publishing, Mar 2023.
The definitive version is available at https://doi.org/10.1088/2631-7990/acabee
Department(s)
Materials Science and Engineering
Publication Status
Open Access
Keywords and Phrases
Anisotropic Thermal Expansion; Borides; High-Entropy Ceramics; Spark Plasma Sintering; Synchrotron Diffraction; Ultra-High Temperature Ceramics
International Standard Serial Number (ISSN)
2631-7990; 2631-8644
Document Type
Article - Journal
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2023 The Authors, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution 4.0 License.
Publication Date
01 Mar 2023
Comments
National Science Foundation, Grant CMMI-1902069