Corrosion behavior of Sc2O3–Y2O3 co-stabilized ZrO2 thermal barrier coatings with CMAS attack

W. Fan; Y. Bai; Y. F. Liu; Y. X. Kang; Y. Wang; Z. Z. Wang; W. Z. Tao

doi:10.1016/j.ceramint.2019.05.063

Corrosion behavior of Sc₂O₃–Y₂O₃ co-stabilized ZrO₂ thermal barrier coatings with CMAS attack

W. Fan
, Y. Bai
, Y. F. Liu
, Y. X. Kang
, Y. Wang
, Z. Z. Wang
, W. Z. Tao

School of Materials Science and Engineering

Xi'an Jiaotong University
Jiangsu Lida Hi-Tech Special Material Co., Ltd

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

69 Scopus citations

Abstract

Traditional viewpoints state that defects, such as pores or cracks, that generally exist in plasma sprayed thermal barrier coatings (TBCs) can provide fast infiltration channels for molten calcia-magnesia-alumino-silicate (CMAS). In contrast with this viewpoint, results from this study suggest that the effect of defects on the CMAS infiltration of the yttria stabilized zirconia (YSZ) coating is limited, even though the dense YSZ bulk material still cannot inhibit the infiltration of CMAS. However, a few additions of Sc₂O₃ can significantly improve the CMAS resistance of the YSZ coating owing to the lower solubility of Sc³⁺ in the CMAS. Our findings provide key insights for the development of CMAS-resistant TBCs.

Original language	English
Pages (from-to)	15763-15767
Number of pages	5
Journal	Ceramics International
Volume	45
Issue number	12
DOIs	https://doi.org/10.1016/j.ceramint.2019.05.063
State	Published - 15 Aug 2019

Keywords

CMAS
Corrosion
ScO–YO–ZrO
Thermal barrier coating

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10.1016/j.ceramint.2019.05.063

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@article{410eebadb64a4a21a2d47fe8d5f7fc92,

title = "Corrosion behavior of Sc2O3{\textendash}Y2O3 co-stabilized ZrO2 thermal barrier coatings with CMAS attack",

abstract = "Traditional viewpoints state that defects, such as pores or cracks, that generally exist in plasma sprayed thermal barrier coatings (TBCs) can provide fast infiltration channels for molten calcia-magnesia-alumino-silicate (CMAS). In contrast with this viewpoint, results from this study suggest that the effect of defects on the CMAS infiltration of the yttria stabilized zirconia (YSZ) coating is limited, even though the dense YSZ bulk material still cannot inhibit the infiltration of CMAS. However, a few additions of Sc2O3 can significantly improve the CMAS resistance of the YSZ coating owing to the lower solubility of Sc3+ in the CMAS. Our findings provide key insights for the development of CMAS-resistant TBCs.",

keywords = "CMAS, Corrosion, ScO{\textendash}YO{\textendash}ZrO, Thermal barrier coating",

author = "W. Fan and Y. Bai and Liu, \{Y. F.\} and Kang, \{Y. X.\} and Y. Wang and Wang, \{Z. Z.\} and Tao, \{W. Z.\}",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd and Techna Group S.r.l.",

year = "2019",

month = aug,

day = "15",

doi = "10.1016/j.ceramint.2019.05.063",

language = "英语",

volume = "45",

pages = "15763--15767",

journal = "Ceramics International",

issn = "0272-8842",

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number = "12",

}

TY - JOUR

T1 - Corrosion behavior of Sc2O3–Y2O3 co-stabilized ZrO2 thermal barrier coatings with CMAS attack

AU - Fan, W.

AU - Bai, Y.

AU - Liu, Y. F.

AU - Kang, Y. X.

AU - Wang, Y.

AU - Wang, Z. Z.

AU - Tao, W. Z.

PY - 2019/8/15

Y1 - 2019/8/15

N2 - Traditional viewpoints state that defects, such as pores or cracks, that generally exist in plasma sprayed thermal barrier coatings (TBCs) can provide fast infiltration channels for molten calcia-magnesia-alumino-silicate (CMAS). In contrast with this viewpoint, results from this study suggest that the effect of defects on the CMAS infiltration of the yttria stabilized zirconia (YSZ) coating is limited, even though the dense YSZ bulk material still cannot inhibit the infiltration of CMAS. However, a few additions of Sc2O3 can significantly improve the CMAS resistance of the YSZ coating owing to the lower solubility of Sc3+ in the CMAS. Our findings provide key insights for the development of CMAS-resistant TBCs.

AB - Traditional viewpoints state that defects, such as pores or cracks, that generally exist in plasma sprayed thermal barrier coatings (TBCs) can provide fast infiltration channels for molten calcia-magnesia-alumino-silicate (CMAS). In contrast with this viewpoint, results from this study suggest that the effect of defects on the CMAS infiltration of the yttria stabilized zirconia (YSZ) coating is limited, even though the dense YSZ bulk material still cannot inhibit the infiltration of CMAS. However, a few additions of Sc2O3 can significantly improve the CMAS resistance of the YSZ coating owing to the lower solubility of Sc3+ in the CMAS. Our findings provide key insights for the development of CMAS-resistant TBCs.

KW - CMAS

KW - Corrosion

KW - ScO–YO–ZrO

KW - Thermal barrier coating

UR - https://www.scopus.com/pages/publications/85065591418

U2 - 10.1016/j.ceramint.2019.05.063

DO - 10.1016/j.ceramint.2019.05.063

M3 - 文章

AN - SCOPUS:85065591418

SN - 0272-8842

VL - 45

SP - 15763

EP - 15767

JO - Ceramics International

JF - Ceramics International

IS - 12

ER -

Corrosion behavior of Sc₂O₃–Y₂O₃ co-stabilized ZrO₂ thermal barrier coatings with CMAS attack

Abstract

Keywords

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