Tough and strong bioinspired high-entropy all-ceramics with a contiguous network structure DOI Creative Commons
Zijie Zhu, Yiwen Liu, Yuanbin Qin

et al.

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: May 17, 2025

Developing bioinspired all-ceramics with plastic phases is considered one of the most effective ways to simultaneously achieve enhanced strength and toughness in ceramic materials for high-temperature applications. Here we explore tough strong high-entropy a contiguous network structure that are able serve up 1300 °C. Specifically, develop all-ceramics, featuring unique distribution Cr7C3 phase within predominant carbide (HEC) hard phase, through composition-engineering strategy. The resulting exhibit impressive fracture initiation 12.5 ± 1.5 MPa·m1/2 flexural 613 52 MPa at room temperature, as well ~97% retention °C due their good stability, surpassing performance other reported ceramics. Further experimental theoretical investigations demonstrate can undergo deformation by forming nanoscale shear bands significant crystal defects, multiple toughening mechanisms involving crack-bridging unfractured ligaments crack deflection HEC/Cr7C3 all-ceramics. This work successfully develops capable serving °C, offering an innovative strategy facilitates further design ceramics applicable higher temperatures.

Language: Английский

Tailoring Structural, Mechanical, and Electronic Properties of (Ti0.25Ta0.25Zr0.25Nb0.25-La )C High-Entropy Carbide Ceramics via Rare-Earth La Incorporation: A Comprehensive First-Principles Study DOI
Zhipeng Wang,

Zhao-Wen Yu,

Linkun Zhang

et al.

Ceramics International, Journal Year: 2025, Volume and Issue: unknown

Published: May 1, 2025

Language: Английский

Citations

0
Tough and strong bioinspired high-entropy all-ceramics with a contiguous network structure DOI Creative Commons
Zijie Zhu, Yiwen Liu, Yuanbin Qin

et al.

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: May 17, 2025

Developing bioinspired all-ceramics with plastic phases is considered one of the most effective ways to simultaneously achieve enhanced strength and toughness in ceramic materials for high-temperature applications. Here we explore tough strong high-entropy a contiguous network structure that are able serve up 1300 °C. Specifically, develop all-ceramics, featuring unique distribution Cr7C3 phase within predominant carbide (HEC) hard phase, through composition-engineering strategy. The resulting exhibit impressive fracture initiation 12.5 ± 1.5 MPa·m1/2 flexural 613 52 MPa at room temperature, as well ~97% retention °C due their good stability, surpassing performance other reported ceramics. Further experimental theoretical investigations demonstrate can undergo deformation by forming nanoscale shear bands significant crystal defects, multiple toughening mechanisms involving crack-bridging unfractured ligaments crack deflection HEC/Cr7C3 all-ceramics. This work successfully develops capable serving °C, offering an innovative strategy facilitates further design ceramics applicable higher temperatures.

Language: Английский

Citations

0