Calcium magnesium aluminosilicate (CMAS) corrosion behaviors of apatite Ca2La8(SiO4)6O2 thermal barrier coating material

Longkang Cong; Wei Li; Yao Guo; Jiancheng Wang; Qiang Song; Shengyue Gu; Shouyang Zhang

doi:10.1016/j.corsci.2022.110322

Calcium magnesium aluminosilicate (CMAS) corrosion behaviors of apatite Ca₂La₈(SiO₄)₆O₂ thermal barrier coating material

Longkang Cong, Wei Li, Yao Guo, Jiancheng Wang, Qiang Song, Shengyue Gu, Shouyang Zhang

School of Materials Sience and Engineering

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

14 Scopus citations

Abstract

The calcium magnesium aluminosilicate (CMAS) attack is becoming a critical obstacle to the application of thermal barrier coatings (TBCs). In this work, we prove that Ca₂La₈(SiO₄)₆O₂ is an effective TBCs material for resisting CMAS attack, and investigates its CMAS corrosion behaviors. The results indicate that no evidence of chemical reactions was found between CMAS and Ca₂La₈(SiO₄)₆O₂ heat-treated at 1300 °C and 1500 °C. The corrosion of apatite by CMAS occurs via dissolution and re-precipitation processes. At 1300 °C, the apatite Ca₂La₈(SiO₄)₆O₂ substrates have little evidence of damage. Moreover, the apatite can also effectively block the infiltration of CMAS up to 1500 °C.

Original language	English
Article number	110322
Journal	Corrosion Science
Volume	203
DOIs	https://doi.org/10.1016/j.corsci.2022.110322
State	Published - 15 Jul 2022

Keywords

Apatite
CaLa(SiO)O ceramic
CMAS
Thermal barrier coating material

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10.1016/j.corsci.2022.110322

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title = "Calcium magnesium aluminosilicate (CMAS) corrosion behaviors of apatite Ca2La8(SiO4)6O2 thermal barrier coating material",

abstract = "The calcium magnesium aluminosilicate (CMAS) attack is becoming a critical obstacle to the application of thermal barrier coatings (TBCs). In this work, we prove that Ca2La8(SiO4)6O2 is an effective TBCs material for resisting CMAS attack, and investigates its CMAS corrosion behaviors. The results indicate that no evidence of chemical reactions was found between CMAS and Ca2La8(SiO4)6O2 heat-treated at 1300 °C and 1500 °C. The corrosion of apatite by CMAS occurs via dissolution and re-precipitation processes. At 1300 °C, the apatite Ca2La8(SiO4)6O2 substrates have little evidence of damage. Moreover, the apatite can also effectively block the infiltration of CMAS up to 1500 °C.",

keywords = "Apatite, CaLa(SiO)O ceramic, CMAS, Thermal barrier coating material",

author = "Longkang Cong and Wei Li and Yao Guo and Jiancheng Wang and Qiang Song and Shengyue Gu and Shouyang Zhang",

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

year = "2022",

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day = "15",

doi = "10.1016/j.corsci.2022.110322",

language = "英语",

volume = "203",

journal = "Corrosion Science",

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TY - JOUR

T1 - Calcium magnesium aluminosilicate (CMAS) corrosion behaviors of apatite Ca2La8(SiO4)6O2 thermal barrier coating material

AU - Cong, Longkang

AU - Li, Wei

AU - Guo, Yao

AU - Wang, Jiancheng

AU - Song, Qiang

AU - Gu, Shengyue

AU - Zhang, Shouyang

PY - 2022/7/15

Y1 - 2022/7/15

N2 - The calcium magnesium aluminosilicate (CMAS) attack is becoming a critical obstacle to the application of thermal barrier coatings (TBCs). In this work, we prove that Ca2La8(SiO4)6O2 is an effective TBCs material for resisting CMAS attack, and investigates its CMAS corrosion behaviors. The results indicate that no evidence of chemical reactions was found between CMAS and Ca2La8(SiO4)6O2 heat-treated at 1300 °C and 1500 °C. The corrosion of apatite by CMAS occurs via dissolution and re-precipitation processes. At 1300 °C, the apatite Ca2La8(SiO4)6O2 substrates have little evidence of damage. Moreover, the apatite can also effectively block the infiltration of CMAS up to 1500 °C.

AB - The calcium magnesium aluminosilicate (CMAS) attack is becoming a critical obstacle to the application of thermal barrier coatings (TBCs). In this work, we prove that Ca2La8(SiO4)6O2 is an effective TBCs material for resisting CMAS attack, and investigates its CMAS corrosion behaviors. The results indicate that no evidence of chemical reactions was found between CMAS and Ca2La8(SiO4)6O2 heat-treated at 1300 °C and 1500 °C. The corrosion of apatite by CMAS occurs via dissolution and re-precipitation processes. At 1300 °C, the apatite Ca2La8(SiO4)6O2 substrates have little evidence of damage. Moreover, the apatite can also effectively block the infiltration of CMAS up to 1500 °C.

KW - Apatite

KW - CaLa(SiO)O ceramic

KW - CMAS

KW - Thermal barrier coating material

UR - https://www.scopus.com/pages/publications/85129019228

U2 - 10.1016/j.corsci.2022.110322

DO - 10.1016/j.corsci.2022.110322

M3 - 文章

AN - SCOPUS:85129019228

SN - 0010-938X

VL - 203

JO - Corrosion Science

JF - Corrosion Science

M1 - 110322

ER -

Calcium magnesium aluminosilicate (CMAS) corrosion behaviors of apatite Ca₂La₈(SiO₄)₆O₂ thermal barrier coating material

Abstract

Keywords

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