Synthesis and Properties of (Hf,Mo,Ti,W,Zr)B2–(Hf,Mo,Ti,W,Z)C Dual Phase Ceramics
2024
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Аутори
Filipović, SuzanaSmith, Steven M.
Hilmas, Gregory E.
Fahrenholtz, William G.
Obradović, Nina
Curtarolo, Stefano
Конференцијски прилог (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Composites based on high entropy borides / high entropy carbides are good candidates for applications in extreme environments based on ultra high melting temperatures above 3000 °C. Dense, dual phase (Hf,Mo,Ti,W,Z)B2–(Hf,Mo,Ti,W,Zr)C ceramics were synthesized with varying contents of Mo and W. The final (Hf0.317Mo0.025Ti0.317W0.025Zr0.317)C–(Hf0.317Mo0.025Ti0.317W0.025Zr0.317)B2 was a nominally pure, dual phase ceramic, while compositions with higher amounts of Mo and W contained multiple phases. Optimized ceramic had submicron grains due to pinning effects between the two phases. Super-hard ceramic was obtained with Vickers hardness values up to 48.6 ± 2.2 GPa for an applied load of 0.49 N. The solubility limits for Mo and W into the (Hf,Mo,Ti,W,Z)B2–(Hf,Mo,Ti,W,Zr)C ceramics were mitigated by decreasing their contents to 2.5 at. % each. A nominally pure dual phase ceramic densified by spark plasma sintering or hot pressing was obtained. A synergistic hardening effect was observed for... optimized ceramic, whereby it had a higher hardness than individual HEC and HEB phases containing the same transition metals.
Кључне речи:
dual-phase ceramics / composite materials / high-entropy borides / high-entropy carbidesИзвор:
Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application XII New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 18-20. September 2024, 2024, 35-36Издавач:
- Belgrade : Serbian Ceramic Society
Финансирање / пројекти:
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200175 (Институт техничких наука САНУ, Београд) (RS-MESTD-inst-2020-200175)
Институција/група
Институт техничких наука САНУ / Institute of Technical Sciences of SASATY - CONF AU - Filipović, Suzana AU - Smith, Steven M. AU - Hilmas, Gregory E. AU - Fahrenholtz, William G. AU - Obradović, Nina AU - Curtarolo, Stefano PY - 2024 UR - https://dais.sanu.ac.rs/123456789/16792 AB - Composites based on high entropy borides / high entropy carbides are good candidates for applications in extreme environments based on ultra high melting temperatures above 3000 °C. Dense, dual phase (Hf,Mo,Ti,W,Z)B2–(Hf,Mo,Ti,W,Zr)C ceramics were synthesized with varying contents of Mo and W. The final (Hf0.317Mo0.025Ti0.317W0.025Zr0.317)C–(Hf0.317Mo0.025Ti0.317W0.025Zr0.317)B2 was a nominally pure, dual phase ceramic, while compositions with higher amounts of Mo and W contained multiple phases. Optimized ceramic had submicron grains due to pinning effects between the two phases. Super-hard ceramic was obtained with Vickers hardness values up to 48.6 ± 2.2 GPa for an applied load of 0.49 N. The solubility limits for Mo and W into the (Hf,Mo,Ti,W,Z)B2–(Hf,Mo,Ti,W,Zr)C ceramics were mitigated by decreasing their contents to 2.5 at. % each. A nominally pure dual phase ceramic densified by spark plasma sintering or hot pressing was obtained. A synergistic hardening effect was observed for optimized ceramic, whereby it had a higher hardness than individual HEC and HEB phases containing the same transition metals. PB - Belgrade : Serbian Ceramic Society C3 - Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application XII New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 18-20. September 2024 T1 - Synthesis and Properties of (Hf,Mo,Ti,W,Zr)B2–(Hf,Mo,Ti,W,Z)C Dual Phase Ceramics SP - 35 EP - 36 UR - https://hdl.handle.net/21.15107/rcub_dais_16792 ER -
@conference{ author = "Filipović, Suzana and Smith, Steven M. and Hilmas, Gregory E. and Fahrenholtz, William G. and Obradović, Nina and Curtarolo, Stefano", year = "2024", abstract = "Composites based on high entropy borides / high entropy carbides are good candidates for applications in extreme environments based on ultra high melting temperatures above 3000 °C. Dense, dual phase (Hf,Mo,Ti,W,Z)B2–(Hf,Mo,Ti,W,Zr)C ceramics were synthesized with varying contents of Mo and W. The final (Hf0.317Mo0.025Ti0.317W0.025Zr0.317)C–(Hf0.317Mo0.025Ti0.317W0.025Zr0.317)B2 was a nominally pure, dual phase ceramic, while compositions with higher amounts of Mo and W contained multiple phases. Optimized ceramic had submicron grains due to pinning effects between the two phases. Super-hard ceramic was obtained with Vickers hardness values up to 48.6 ± 2.2 GPa for an applied load of 0.49 N. The solubility limits for Mo and W into the (Hf,Mo,Ti,W,Z)B2–(Hf,Mo,Ti,W,Zr)C ceramics were mitigated by decreasing their contents to 2.5 at. % each. A nominally pure dual phase ceramic densified by spark plasma sintering or hot pressing was obtained. A synergistic hardening effect was observed for optimized ceramic, whereby it had a higher hardness than individual HEC and HEB phases containing the same transition metals.", publisher = "Belgrade : Serbian Ceramic Society", journal = "Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application XII New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 18-20. September 2024", title = "Synthesis and Properties of (Hf,Mo,Ti,W,Zr)B2–(Hf,Mo,Ti,W,Z)C Dual Phase Ceramics", pages = "35-36", url = "https://hdl.handle.net/21.15107/rcub_dais_16792" }
Filipović, S., Smith, S. M., Hilmas, G. E., Fahrenholtz, W. G., Obradović, N.,& Curtarolo, S.. (2024). Synthesis and Properties of (Hf,Mo,Ti,W,Zr)B2–(Hf,Mo,Ti,W,Z)C Dual Phase Ceramics. in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application XII New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 18-20. September 2024 Belgrade : Serbian Ceramic Society., 35-36. https://hdl.handle.net/21.15107/rcub_dais_16792
Filipović S, Smith SM, Hilmas GE, Fahrenholtz WG, Obradović N, Curtarolo S. Synthesis and Properties of (Hf,Mo,Ti,W,Zr)B2–(Hf,Mo,Ti,W,Z)C Dual Phase Ceramics. in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application XII New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 18-20. September 2024. 2024;:35-36. https://hdl.handle.net/21.15107/rcub_dais_16792 .
Filipović, Suzana, Smith, Steven M., Hilmas, Gregory E., Fahrenholtz, William G., Obradović, Nina, Curtarolo, Stefano, "Synthesis and Properties of (Hf,Mo,Ti,W,Zr)B2–(Hf,Mo,Ti,W,Z)C Dual Phase Ceramics" in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application XII New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 18-20. September 2024 (2024):35-36, https://hdl.handle.net/21.15107/rcub_dais_16792 .