Corrosion behavior of thermal barrier coatings exposed to NaCl plus water vapor at 1050 °C

Yingxue Song; Chungen Zhou; Huibin Xu

doi:10.1016/j.tsf.2007.07.128

Corrosion behavior of thermal barrier coatings exposed to NaCl plus water vapor at 1050 °C

Yingxue Song
, Chungen Zhou^*
, Huibin Xu

^*Corresponding author for this work

School of Materials Science and Engineering

Beihang University

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

27 Scopus citations

Abstract

In the present investigation, NiCrAlY coating with the composition of Ni-24Cr-6Al-0.7Y is deposited on a nickel-based superalloy by low-pressure plasma spraying, and the top coating, ZrO₂, partially stabilized with Y₂O₃ (7 wt.%), is deposited on NiCrAlY coating by air plasma spraying. The cyclic corrosion behavior of NiCrAlY + YSZ coating exposed to NaCl plus water vapor has been investigated under atmospheric pressure at 1050 °C. The result shows that the cyclic oxidation life of NiCrAlY + YSZ coating in the presence of NaCl plus water vapor was shortened compared with that in NaCl vapor. The failure of the coating mainly happened near the interface between the bond coat and YSZ. The accelerated failure mechanism has been discussed based on the experimental results and thermodynamics.

Original language	English
Pages (from-to)	5686-5689
Number of pages	4
Journal	Thin Solid Films
Volume	516
Issue number	16
DOIs	https://doi.org/10.1016/j.tsf.2007.07.128
State	Published - 30 Jun 2008

Keywords

Cyclic corrosion behavior
NaCl plus water vapor
Nickel-based superalloy
Thermal barrier coatings (TBCs)

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10.1016/j.tsf.2007.07.128

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@article{051932df4b034862b6d336f4fa0534e6,

title = "Corrosion behavior of thermal barrier coatings exposed to NaCl plus water vapor at 1050 °C",

abstract = "In the present investigation, NiCrAlY coating with the composition of Ni-24Cr-6Al-0.7Y is deposited on a nickel-based superalloy by low-pressure plasma spraying, and the top coating, ZrO2, partially stabilized with Y2O3 (7 wt.\%), is deposited on NiCrAlY coating by air plasma spraying. The cyclic corrosion behavior of NiCrAlY + YSZ coating exposed to NaCl plus water vapor has been investigated under atmospheric pressure at 1050 °C. The result shows that the cyclic oxidation life of NiCrAlY + YSZ coating in the presence of NaCl plus water vapor was shortened compared with that in NaCl vapor. The failure of the coating mainly happened near the interface between the bond coat and YSZ. The accelerated failure mechanism has been discussed based on the experimental results and thermodynamics.",

keywords = "Cyclic corrosion behavior, NaCl plus water vapor, Nickel-based superalloy, Thermal barrier coatings (TBCs)",

author = "Yingxue Song and Chungen Zhou and Huibin Xu",

year = "2008",

month = jun,

day = "30",

doi = "10.1016/j.tsf.2007.07.128",

language = "英语",

volume = "516",

pages = "5686--5689",

journal = "Thin Solid Films",

issn = "0040-6090",

publisher = "Elsevier B.V.",

number = "16",

}

TY - JOUR

T1 - Corrosion behavior of thermal barrier coatings exposed to NaCl plus water vapor at 1050 °C

AU - Song, Yingxue

AU - Zhou, Chungen

AU - Xu, Huibin

PY - 2008/6/30

Y1 - 2008/6/30

N2 - In the present investigation, NiCrAlY coating with the composition of Ni-24Cr-6Al-0.7Y is deposited on a nickel-based superalloy by low-pressure plasma spraying, and the top coating, ZrO2, partially stabilized with Y2O3 (7 wt.%), is deposited on NiCrAlY coating by air plasma spraying. The cyclic corrosion behavior of NiCrAlY + YSZ coating exposed to NaCl plus water vapor has been investigated under atmospheric pressure at 1050 °C. The result shows that the cyclic oxidation life of NiCrAlY + YSZ coating in the presence of NaCl plus water vapor was shortened compared with that in NaCl vapor. The failure of the coating mainly happened near the interface between the bond coat and YSZ. The accelerated failure mechanism has been discussed based on the experimental results and thermodynamics.

AB - In the present investigation, NiCrAlY coating with the composition of Ni-24Cr-6Al-0.7Y is deposited on a nickel-based superalloy by low-pressure plasma spraying, and the top coating, ZrO2, partially stabilized with Y2O3 (7 wt.%), is deposited on NiCrAlY coating by air plasma spraying. The cyclic corrosion behavior of NiCrAlY + YSZ coating exposed to NaCl plus water vapor has been investigated under atmospheric pressure at 1050 °C. The result shows that the cyclic oxidation life of NiCrAlY + YSZ coating in the presence of NaCl plus water vapor was shortened compared with that in NaCl vapor. The failure of the coating mainly happened near the interface between the bond coat and YSZ. The accelerated failure mechanism has been discussed based on the experimental results and thermodynamics.

KW - Cyclic corrosion behavior

KW - NaCl plus water vapor

KW - Nickel-based superalloy

KW - Thermal barrier coatings (TBCs)

UR - https://www.scopus.com/pages/publications/43949091120

U2 - 10.1016/j.tsf.2007.07.128

DO - 10.1016/j.tsf.2007.07.128

M3 - 文章

AN - SCOPUS:43949091120

SN - 0040-6090

VL - 516

SP - 5686

EP - 5689

JO - Thin Solid Films

JF - Thin Solid Films

IS - 16

ER -

Corrosion behavior of thermal barrier coatings exposed to NaCl plus water vapor at 1050 °C

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Keywords

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