TY - JOUR
T1 - Oxidation behavior of high-entropy (Zr0.2Hf0.2Ta0.2Nb0.2Ti0.2)B2 ceramic with 20% SiC addition
AU - Guo, Ruru
AU - Li, Zhijian
AU - Li, Lu
AU - Zheng, Ruixiao
AU - Ma, Chaoli
N1 - Publisher Copyright:
© 2024 Elsevier Ltd
PY - 2024/7
Y1 - 2024/7
N2 - Oxidation behaviors of (Zr0.2Hf0.2Ta0.2Nb0.2Ti0.2)B2 high-entropy boride (HEB) ceramic and its composite containing 20 vol% SiC (HEB-20SiC) were studied at 1100–1400 °C in air for the first time. Compared with the HEB, the HEB-20SiC showed the significantly lower oxidation rate, the higher oxidation activation energy and the improved oxidation resistance, which could be attributed to the formation of stable and dense oxide scale containing SiO2. A layered oxidation structure was observed in the cross-section of HEB-20SiC, ascribing to the active oxidation, the generation of SiO and TiO gases, their subsequent outward diffusion and the re-oxidation at the surface.
AB - Oxidation behaviors of (Zr0.2Hf0.2Ta0.2Nb0.2Ti0.2)B2 high-entropy boride (HEB) ceramic and its composite containing 20 vol% SiC (HEB-20SiC) were studied at 1100–1400 °C in air for the first time. Compared with the HEB, the HEB-20SiC showed the significantly lower oxidation rate, the higher oxidation activation energy and the improved oxidation resistance, which could be attributed to the formation of stable and dense oxide scale containing SiO2. A layered oxidation structure was observed in the cross-section of HEB-20SiC, ascribing to the active oxidation, the generation of SiO and TiO gases, their subsequent outward diffusion and the re-oxidation at the surface.
KW - High-entropy ceramic
KW - Oxidation behavior
KW - SiC addition
KW - Transition metal boride
UR - https://www.scopus.com/pages/publications/85185594726
U2 - 10.1016/j.jeurceramsoc.2024.02.019
DO - 10.1016/j.jeurceramsoc.2024.02.019
M3 - 文章
AN - SCOPUS:85185594726
SN - 0955-2219
VL - 44
SP - 5181
EP - 5189
JO - Journal of the European Ceramic Society
JF - Journal of the European Ceramic Society
IS - 8
ER -