Work

Searching the limits of compositionally complex AlB2-type diboride solid solutions for hypersonic applications

Year: 2026

Type: article

Abstract: Compositionally complex (CC) AlB 2 -type diboride solid solutions (DSSs) containing IV-V-VI group metals were investigated as candidate materials for hypersonic applications using a ground entry simulator. Each CCDSS was composed of Ti and three other transition metals among Zr-Hf-Nb-Ta. Single phase CCDSS dense discs were spark plasma sintered and then exposed to a supersonic dissociated airflow (nominal Mach 3). The overall degradation of the discs was highly dependent on the combination of starting metals, and massive preferential oxidation occurred. The coexistence of Nb and Ta was detrimental. A thermal study was devised and implemented in a numerical model to validate the experimental set-up. The experimental results also showed good agreement with predictions based on a thermodynamic assessment.

Source: Journal of the European Ceramic Society

DOI: 10.1016/j.jeurceramsoc.2026.118206

Authors: F. Monteverde, S. Cassese, D. De Prisco, S. Mungiguerra, R. Savino

Institutions: Institute of Science, Technology and Sustainability for Ceramics, National Research Council, University of Naples Federico II

Language: English

Topic: Advanced ceramic materials synthesis

Subfield: Ceramics and Composites

Field: Materials Science

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,900

OpenAlex ID: W7127149449

FWCI: 6.205

Cites: 49

Cited by: 3

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