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[期刊论文]

Water vapor corrosion behaviours of nanostructured Yb2O3-Yb2SiO5/ mullite/Si environmental barrier coatings

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author:

Xiao, Fei (Xiao, Fei.) [1] | Yan, Mufu (Yan, Mufu.) [2] | Wang, You (Wang, You.) [3] | Unfold

Indexed by:

EI Scopus SCIE

Abstract:

In this work, the nanostructured Yb2O3-Yb2SiO5/mullite/Si environmental barrier coatings (EBCs) were designed and prepared by atmospheric plasma spraying. The water vapor corrosion behavior of coatings was investigated at a temperature of 1350 degrees C for durations ranging from 100 to 500 h, and the influence of phase compositions, microstructure on this behavior was systematically investigated. The results indicate that phase transformation occurs during the water vapor corrosion process, and severe corrosion takes place at the Yb2O3-Yb2SiO5 top coating and the mullite intermediate layer. Obvious diffusion reaction between Yb2O3-Yb2SiO5 and mullite layers occurred without water vapor, while the diffusion reaction cannot be observed under water vapor. The water vapor corrosion mechanism of EBCs is mainly attributed to residual thermal mismatch stresses, phase transformation resulting from sintering of Yb2O3-Yb2SiO5, as well as the formation of TGO by oxidation.

Keyword:

Atmospheric plasma spraying High temperature water vapor corrosion Nanostructured EBCs Yb2O3-Yb2SiO5

Community:

  • [ 1 ] [Xiao, Fei]Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China
  • [ 2 ] [Yan, Mufu]Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China
  • [ 3 ] [Wang, You]Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China
  • [ 4 ] [Tang, Shawei]Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China
  • [ 5 ] [Zhang, Xiaodong]Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China
  • [ 6 ] [Xiao, Fei]Liaoning Acad Mat, Inst Coating Technol Hydrogen Gas Turbines, Shenyang 110004, Peoples R China
  • [ 7 ] [Liu, Ming]Fuzhou Univ, Sch Mech Engn & Automat, Fuzhou 350116, Peoples R China

Reprint 's Address:

  • [Tang, Shawei]Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China;;[Zhang, Xiaodong]Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China;;[Liu, Ming]Fuzhou Univ, Sch Mech Engn & Automat, Fuzhou 350116, Peoples R China;;

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Source :

CERAMICS INTERNATIONAL

ISSN: 0272-8842

Year: 2025

Issue: 1

Volume: 51

Page: 279-289

5 . 1 0 0

JCR@2023

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count:

30 Days PV: 1

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