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Article

Enhancing Ablation Resistance of TaB2-Based Ultra-High Temperature Ceramics by Mixing Fine TaC Particles and Dispersed Multi-Walled Carbon Nanotubes

by
Guangxu Bo
,
Xiaoke Tian
,
Huanhuan Li
,
Luona Ye
,
Xiaoling Xu
,
Zhaorui Gu
,
Jinyong Yan
,
Xingjian Su
and
Yunjun Yan
*
Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Materials 2024, 17(14), 3394; https://doi.org/10.3390/ma17143394
Submission received: 7 June 2024 / Revised: 6 July 2024 / Accepted: 8 July 2024 / Published: 9 July 2024

Abstract

Ultra-high temperature ceramics (UHTCs) have been widely applied in many fields. In order to enhance the comprehensive properties of TaB2-based UHTCs, the first collaborative use of fine TaC particles and dispersed multi-walled carbon nanotubes (MWCNTs) was employed via spark plasma sintering (SPS) at 1700 °C. The derived UHTCs exhibited an average grain size of 1.3 μm, a relative density of 98.6%, an elastic modulus of 386.3 GPa, and a nano hardness of 21.7 GPa, leading to a greatly improved oxidation resistance with a lower linear ablation rate at −3.3 × 10−2 μm/s, and a markedly reinforced ablation resistance with mass ablation rate of −1.3 × 10−3 mg/(s·cm2). The enhanced ablation resistance was attributable to the physical pinning effect, sealing effect and self-healing effect. Thus, this study provides a potential strategy for preparation of UHTCs with bettered ablation resistance and physical properties.
Keywords: TaB2-based ultra-high temperature ceramics; ablation resistance; physical pinning effect; sealing effect; self-healing effect TaB2-based ultra-high temperature ceramics; ablation resistance; physical pinning effect; sealing effect; self-healing effect

Share and Cite

MDPI and ACS Style

Bo, G.; Tian, X.; Li, H.; Ye, L.; Xu, X.; Gu, Z.; Yan, J.; Su, X.; Yan, Y. Enhancing Ablation Resistance of TaB2-Based Ultra-High Temperature Ceramics by Mixing Fine TaC Particles and Dispersed Multi-Walled Carbon Nanotubes. Materials 2024, 17, 3394. https://doi.org/10.3390/ma17143394

AMA Style

Bo G, Tian X, Li H, Ye L, Xu X, Gu Z, Yan J, Su X, Yan Y. Enhancing Ablation Resistance of TaB2-Based Ultra-High Temperature Ceramics by Mixing Fine TaC Particles and Dispersed Multi-Walled Carbon Nanotubes. Materials. 2024; 17(14):3394. https://doi.org/10.3390/ma17143394

Chicago/Turabian Style

Bo, Guangxu, Xiaoke Tian, Huanhuan Li, Luona Ye, Xiaoling Xu, Zhaorui Gu, Jinyong Yan, Xingjian Su, and Yunjun Yan. 2024. "Enhancing Ablation Resistance of TaB2-Based Ultra-High Temperature Ceramics by Mixing Fine TaC Particles and Dispersed Multi-Walled Carbon Nanotubes" Materials 17, no. 14: 3394. https://doi.org/10.3390/ma17143394

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