Abstract
Multi-metal compositionally complex (CC) AlB2-type diboride solid solutions (SS) containing IV-V-VI group elements are garnering a steadily growing research interest. The present work explores the composition dependence of oxidation resistance on nominally equiatomic (Hf,Me,Ta,Ti,Zr)B2 SS, Me = Nb or Cr, exposed to a dissociated air plasma (total pressure of about 1 kPa): specimens were exposed for 5 min at some selected set points between 1800 K and 2500 K using a solar furnace. The CC diboride with Nb showed superior resistance to oxidation compared to that with Cr. The experimental results showed good agreement with predictions based on a thermodynamic assessment.
Recommended Citation
F. Monteverde et al., "Compositionally Complex AlB2-type Diborides in Dissociated Air Plasma," Journal of the European Ceramic Society, vol. 45, no. 3, article no. 116963, Elsevier, Mar 2025.
The definitive version is available at https://doi.org/10.1016/j.jeurceramsoc.2024.116963
Department(s)
Materials Science and Engineering
Publication Status
Open Access
Keywords and Phrases
Air plasma; Compositionally complex diboride solid solution; High temperature; Resistance to oxidation; Self healing
International Standard Serial Number (ISSN)
1873-619X; 0955-2219
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2025 Elsevier, All rights reserved.
Publication Date
01 Mar 2025
Comments
Missouri University of Science and Technology, Grant CMMI-1902069