A self-healing environmental barrier coating: TiSi2-doped Y2Si2O7/barium strontium aluminosilicate coating

Yigao Chen; Yonghong Lu; Qiao Ye; Yiguang Wang

doi:10.1016/j.surfcoat.2016.09.020

A self-healing environmental barrier coating: TiSi₂-doped Y₂Si₂O₇/barium strontium aluminosilicate coating

Yigao Chen, Yonghong Lu, Qiao Ye, Yiguang Wang^*

^*Corresponding author for this work

Northwestern Polytechnical University Xian

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

16 Citations (Scopus)

Abstract

The TiSi₂-doped Y₂Si₂O₇/barium strontium aluminosilicate (BSAS) coating was fabricated on C/SiCs and corroded in a 50%H₂O–50%O₂ environment at 1250 °C. The C/SiCs coated with TiSi₂-doped Y₂Si₂O₇/BSAS showed better durability than that coated with Y₂Si₂O₇/BSAS. Microstructural studies showed that the through-thickness cracks in the TiSi₂-doped Y₂Si₂O₇/BSAS coating were filled with the oxidation products of TiSi₂, indicating that the TiSi₂-doped Y₂Si₂O₇/BSAS coating has self-healing properties. Furthermore, the Y₂Si₂O₇/BSAS coating doped with 15 wt% TiSi₂ showed better durability than those doped with 10 wt% and 20 wt% TiSi₂, indicating that 15 wt% TiSi₂ is the optimum doping amount for Y₂Si₂O₇/BSAS coatings.

Original language	English
Pages (from-to)	436-440
Number of pages	5
Journal	Surface and Coatings Technology
Volume	307
DOIs	https://doi.org/10.1016/j.surfcoat.2016.09.020
Publication status	Published - 15 Dec 2016
Externally published	Yes

Keywords

C/SiC composites
Dip-coating
Environmental barrier coatings
Self-healing
TiSi
Water vapor corrosion

Access to Document

10.1016/j.surfcoat.2016.09.020

Cite this

@article{a8adc757bbbc4e3aa1717076669617ec,

title = "A self-healing environmental barrier coating: TiSi2-doped Y2Si2O7/barium strontium aluminosilicate coating",

abstract = "The TiSi2-doped Y2Si2O7/barium strontium aluminosilicate (BSAS) coating was fabricated on C/SiCs and corroded in a 50%H2O–50%O2 environment at 1250 °C. The C/SiCs coated with TiSi2-doped Y2Si2O7/BSAS showed better durability than that coated with Y2Si2O7/BSAS. Microstructural studies showed that the through-thickness cracks in the TiSi2-doped Y2Si2O7/BSAS coating were filled with the oxidation products of TiSi2, indicating that the TiSi2-doped Y2Si2O7/BSAS coating has self-healing properties. Furthermore, the Y2Si2O7/BSAS coating doped with 15 wt% TiSi2 showed better durability than those doped with 10 wt% and 20 wt% TiSi2, indicating that 15 wt% TiSi2 is the optimum doping amount for Y2Si2O7/BSAS coatings.",

keywords = "C/SiC composites, Dip-coating, Environmental barrier coatings, Self-healing, TiSi, Water vapor corrosion",

author = "Yigao Chen and Yonghong Lu and Qiao Ye and Yiguang Wang",

note = "Publisher Copyright: {\textcopyright} 2016",

year = "2016",

month = dec,

day = "15",

doi = "10.1016/j.surfcoat.2016.09.020",

language = "English",

volume = "307",

pages = "436--440",

journal = "Surface and Coatings Technology",

issn = "0257-8972",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - A self-healing environmental barrier coating

T2 - TiSi2-doped Y2Si2O7/barium strontium aluminosilicate coating

AU - Chen, Yigao

AU - Lu, Yonghong

AU - Ye, Qiao

AU - Wang, Yiguang

PY - 2016/12/15

Y1 - 2016/12/15

N2 - The TiSi2-doped Y2Si2O7/barium strontium aluminosilicate (BSAS) coating was fabricated on C/SiCs and corroded in a 50%H2O–50%O2 environment at 1250 °C. The C/SiCs coated with TiSi2-doped Y2Si2O7/BSAS showed better durability than that coated with Y2Si2O7/BSAS. Microstructural studies showed that the through-thickness cracks in the TiSi2-doped Y2Si2O7/BSAS coating were filled with the oxidation products of TiSi2, indicating that the TiSi2-doped Y2Si2O7/BSAS coating has self-healing properties. Furthermore, the Y2Si2O7/BSAS coating doped with 15 wt% TiSi2 showed better durability than those doped with 10 wt% and 20 wt% TiSi2, indicating that 15 wt% TiSi2 is the optimum doping amount for Y2Si2O7/BSAS coatings.

AB - The TiSi2-doped Y2Si2O7/barium strontium aluminosilicate (BSAS) coating was fabricated on C/SiCs and corroded in a 50%H2O–50%O2 environment at 1250 °C. The C/SiCs coated with TiSi2-doped Y2Si2O7/BSAS showed better durability than that coated with Y2Si2O7/BSAS. Microstructural studies showed that the through-thickness cracks in the TiSi2-doped Y2Si2O7/BSAS coating were filled with the oxidation products of TiSi2, indicating that the TiSi2-doped Y2Si2O7/BSAS coating has self-healing properties. Furthermore, the Y2Si2O7/BSAS coating doped with 15 wt% TiSi2 showed better durability than those doped with 10 wt% and 20 wt% TiSi2, indicating that 15 wt% TiSi2 is the optimum doping amount for Y2Si2O7/BSAS coatings.

KW - C/SiC composites

KW - Dip-coating

KW - Environmental barrier coatings

KW - Self-healing

KW - TiSi

KW - Water vapor corrosion

UR - http://www.scopus.com/inward/record.url?scp=84987904468&partnerID=8YFLogxK

U2 - 10.1016/j.surfcoat.2016.09.020

DO - 10.1016/j.surfcoat.2016.09.020

M3 - Article

AN - SCOPUS:84987904468

SN - 0257-8972

VL - 307

SP - 436

EP - 440

JO - Surface and Coatings Technology

JF - Surface and Coatings Technology

ER -

A self-healing environmental barrier coating: TiSi₂-doped Y₂Si₂O₇/barium strontium aluminosilicate coating

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this