Microstructure evolution of HfB2-SiC/SiC coating for C/C composites during long-term oxidation at 1700 °C

Junshuai Lv; Yulei Zhang; Wei Li; Xiaofei Zhu; Jiachen Li; Jianhua Zhang; Tao Li

doi:10.1016/j.corsci.2022.110524

Microstructure evolution of HfB₂-SiC/SiC coating for C/C composites during long-term oxidation at 1700 °C

Junshuai Lv, Yulei Zhang, Wei Li, Xiaofei Zhu, Jiachen Li, Jianhua Zhang, Tao Li

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

29 Scopus citations

Abstract

A rigorous understanding of the structural evolution of oxidation-resistant coatings in service can pave the way for the development of coatings for carbon/carbon composites, and therefore a typical HfB₂-SiC/SiC coating was investigated here. The initial oxidation of the coating resulted in a SiO₂/HfO₂ scale, and the subsequent structural evolution was dominated by the growth of HfSiO₄, forming a SiO₂/HfSiO₄/HfO₂ protective layer that was stable at 1700 °C with long-term exposure to air. Ultimately, the SiC transition layer gradually degraded due to the active oxidation of SiC. Based on these findings, feasible strategies to improve coating longevity are proposed.

Original language	English
Article number	110524
Journal	Corrosion Science
Volume	206
DOIs	https://doi.org/10.1016/j.corsci.2022.110524
State	Published - Sep 2022

Keywords

Carbon/carbon composites
Coating recession
HfB
Oxidation-resistant coatings
SiC

Access to Document

10.1016/j.corsci.2022.110524

Cite this

@article{cc4798ca6cc94c3da78d4488168c35d5,

title = "Microstructure evolution of HfB2-SiC/SiC coating for C/C composites during long-term oxidation at 1700 °C",

abstract = "A rigorous understanding of the structural evolution of oxidation-resistant coatings in service can pave the way for the development of coatings for carbon/carbon composites, and therefore a typical HfB2-SiC/SiC coating was investigated here. The initial oxidation of the coating resulted in a SiO2/HfO2 scale, and the subsequent structural evolution was dominated by the growth of HfSiO4, forming a SiO2/HfSiO4/HfO2 protective layer that was stable at 1700 °C with long-term exposure to air. Ultimately, the SiC transition layer gradually degraded due to the active oxidation of SiC. Based on these findings, feasible strategies to improve coating longevity are proposed.",

keywords = "Carbon/carbon composites, Coating recession, HfB, Oxidation-resistant coatings, SiC",

author = "Junshuai Lv and Yulei Zhang and Wei Li and Xiaofei Zhu and Jiachen Li and Jianhua Zhang and Tao Li",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier Ltd",

year = "2022",

month = sep,

doi = "10.1016/j.corsci.2022.110524",

language = "英语",

volume = "206",

journal = "Corrosion Science",

issn = "0010-938X",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Microstructure evolution of HfB2-SiC/SiC coating for C/C composites during long-term oxidation at 1700 °C

AU - Lv, Junshuai

AU - Zhang, Yulei

AU - Li, Wei

AU - Zhu, Xiaofei

AU - Li, Jiachen

AU - Zhang, Jianhua

AU - Li, Tao

PY - 2022/9

Y1 - 2022/9

N2 - A rigorous understanding of the structural evolution of oxidation-resistant coatings in service can pave the way for the development of coatings for carbon/carbon composites, and therefore a typical HfB2-SiC/SiC coating was investigated here. The initial oxidation of the coating resulted in a SiO2/HfO2 scale, and the subsequent structural evolution was dominated by the growth of HfSiO4, forming a SiO2/HfSiO4/HfO2 protective layer that was stable at 1700 °C with long-term exposure to air. Ultimately, the SiC transition layer gradually degraded due to the active oxidation of SiC. Based on these findings, feasible strategies to improve coating longevity are proposed.

AB - A rigorous understanding of the structural evolution of oxidation-resistant coatings in service can pave the way for the development of coatings for carbon/carbon composites, and therefore a typical HfB2-SiC/SiC coating was investigated here. The initial oxidation of the coating resulted in a SiO2/HfO2 scale, and the subsequent structural evolution was dominated by the growth of HfSiO4, forming a SiO2/HfSiO4/HfO2 protective layer that was stable at 1700 °C with long-term exposure to air. Ultimately, the SiC transition layer gradually degraded due to the active oxidation of SiC. Based on these findings, feasible strategies to improve coating longevity are proposed.

KW - Carbon/carbon composites

KW - Coating recession

KW - HfB

KW - Oxidation-resistant coatings

KW - SiC

UR - http://www.scopus.com/inward/record.url?scp=85134904798&partnerID=8YFLogxK

U2 - 10.1016/j.corsci.2022.110524

DO - 10.1016/j.corsci.2022.110524

M3 - 文章

AN - SCOPUS:85134904798

SN - 0010-938X

VL - 206

JO - Corrosion Science

JF - Corrosion Science

M1 - 110524

ER -

Microstructure evolution of HfB₂-SiC/SiC coating for C/C composites during long-term oxidation at 1700 °C

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this