Počet záznamů: 1
Effect of SiC on densification, microstructure and mechanical properties of high entropy diboride (Ti0.2Zr0.2Hf0.2Nb0.2Ta0.2)B2
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SYSNO ASEP 0585151 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Effect of SiC on densification, microstructure and mechanical properties of high entropy diboride (Ti0.2Zr0.2Hf0.2Nb0.2Ta0.2)B2 Tvůrce(i) Kombamuthu, V. (SK)
Ünsal, H. (SK)
Chlup, Zdeněk (UFM-A) RID, ORCID
Tatarková, M. (SK)
Kovalčíková, A. (SK)
Zhukova, I. (SK)
Hosseini, N. (SK)
Hičák, M. (SK)
Dlouhý, Ivo (UFM-A) RID, ORCID
Tatarko, P. (SK)Celkový počet autorů 10 Zdroj.dok. Journal of the European Ceramic Society. - : Elsevier - ISSN 0955-2219
Roč. 44, č. 9 (2024), s. 5358-5369Poč.str. 12 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova Boro/carbothermal reduction ; High-entropy diborides ; Mechanical properties ; Silicon carbide ; Spark plasma sintering Vědní obor RIV JH - Keramika, žáruvzdorné materiály a skla Obor OECD Ceramics Způsob publikování Open access Institucionální podpora UFM-A - RVO:68081723 UT WOS 001226350100001 EID SCOPUS 85182006061 DOI 10.1016/j.jeurceramsoc.2023.12.072 Anotace Highly dense high entropy diboride (Ti0.2Zr0.2Hf0.2Nb0.2Ta0.2)B2-SiC composites with different β-SiC content (5, 10, 15, 20 and 25 vol%) were prepared by Spark Plasma Sintering (SPS) at 1900 °C. High-purity high entropy diboride (HEB) powder was synthesized using boro/carbothermal reduction of oxide precursors at 1800 °C. X-ray diffraction patterns of the synthesized powders and sintered compacts of HEB showed a single solid solution with hexagonal AlB2 structure without any residual oxide impurities. Energy Dispersive X-ray Spectroscopy (EDS) mapping results indicated the uniform elemental distribution of transition metals in the HEB phase. The addition of SiC improved the densification of HEB-SiC composites. The composite with 20 vol% SiC exhibited a unique combination of mechanical properties, such as superior Vickers hardness (22.28 ± 0.25 GPa), flexural strength (750.21 ± 43.23 MPa), indentation fracture toughness (4.12 ± 0.2 MPa.m1/2), Young's modulus (495.3 ± 0.3 GPa) and dynamic oxidation resistance (0.02 mg.cm−2.s−1). Pracoviště Ústav fyziky materiálu Kontakt Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Rok sběru 2025 Elektronická adresa https://www.sciencedirect.com/science/article/pii/S0955221923010877?via%3Dihub
Počet záznamů: 1