Oxidation behavior of high-entropy (Zr0.2Hf0.2Ta0.2Nb0.2Ti0.2)B2 ceramic with 20% SiC addition

Ruru Guo; Zhijian Li; Lu Li; Ruixiao Zheng; Chaoli Ma

doi:10.1016/j.jeurceramsoc.2024.02.019

Oxidation behavior of high-entropy (Zr_0.2Hf_0.2Ta_0.2Nb_0.2Ti_0.2)B₂ ceramic with 20% SiC addition

Ruru Guo
, Zhijian Li
, Lu Li^*
, Ruixiao Zheng^*
, Chaoli Ma

^*Corresponding author for this work

School of Materials Science and Engineering

Beihang University

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

Oxidation behaviors of (Zr_0.2Hf_0.2Ta_0.2Nb_0.2Ti_0.2)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.

Original language	English
Pages (from-to)	5181-5189
Number of pages	9
Journal	Journal of the European Ceramic Society
Volume	44
Issue number	8
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2024.02.019
State	Published - Jul 2024

Keywords

High-entropy ceramic
Oxidation behavior
SiC addition
Transition metal boride

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title = "Oxidation behavior of high-entropy (Zr0.2Hf0.2Ta0.2Nb0.2Ti0.2)B2 ceramic with 20\% SiC addition",

abstract = "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.",

keywords = "High-entropy ceramic, Oxidation behavior, SiC addition, Transition metal boride",

author = "Ruru Guo and Zhijian Li and Lu Li and Ruixiao Zheng and Chaoli Ma",

note = "Publisher Copyright: {\textcopyright} 2024 Elsevier Ltd",

year = "2024",

month = jul,

doi = "10.1016/j.jeurceramsoc.2024.02.019",

language = "英语",

volume = "44",

pages = "5181--5189",

journal = "Journal of the European Ceramic Society",

issn = "0955-2219",

publisher = "Elsevier B.V.",

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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

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 -

Oxidation behavior of high-entropy (Zr_0.2Hf_0.2Ta_0.2Nb_0.2Ti_0.2)B₂ ceramic with 20% SiC addition

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Keywords

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