High temperature wettability between CMAS and YSZ coating with tailored surface microstructures

Y. X. Kang; Y. Bai; G. Q. Du; F. L. Yu; C. G. Bao; Y. T. Wang; F. Ding

doi:10.1016/j.matlet.2018.06.066

High temperature wettability between CMAS and YSZ coating with tailored surface microstructures

Y. X. Kang
, Y. Bai
, G. Q. Du
, F. L. Yu
, C. G. Bao
, Y. T. Wang
, F. Ding

Faculty of Electronic and Information Engineering

Xi'an Jiaotong University
Xi'an Aeronautical University

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

53 Scopus citations

Abstract

In the present work, the wetting behavior of molten calcium-magnesium-aluminum-silicate (CMAS) on femtosecond laser ablated YSZ coatings is comparatively studied. The results suggest that femtosecond laser ablated coating possesses smaller initial contact angle compared with as-sprayed or polished YSZ coatings, but lower spreading rate and larger equilibrium contact angle. This difference can be attributed to: 1) restricted CMAS spreading by the ablated squares through pinning the solid-liquid-vapor triple-phase contact line; 2) retarded CMAS penetration by microrod-shaped structure inside the ablated squares. This study provides an effective method to improve the CMAS resistance of YSZ coating by femtosecond laser.

Original language	English
Pages (from-to)	40-43
Number of pages	4
Journal	Materials Letters
Volume	229
DOIs	https://doi.org/10.1016/j.matlet.2018.06.066
State	Published - 15 Oct 2018

Keywords

Ceramics
Contact angle
Corrosion
Femtosecond laser
Thermal barrier coating
Wetting

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10.1016/j.matlet.2018.06.066

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title = "High temperature wettability between CMAS and YSZ coating with tailored surface microstructures",

abstract = "In the present work, the wetting behavior of molten calcium-magnesium-aluminum-silicate (CMAS) on femtosecond laser ablated YSZ coatings is comparatively studied. The results suggest that femtosecond laser ablated coating possesses smaller initial contact angle compared with as-sprayed or polished YSZ coatings, but lower spreading rate and larger equilibrium contact angle. This difference can be attributed to: 1) restricted CMAS spreading by the ablated squares through pinning the solid-liquid-vapor triple-phase contact line; 2) retarded CMAS penetration by microrod-shaped structure inside the ablated squares. This study provides an effective method to improve the CMAS resistance of YSZ coating by femtosecond laser.",

keywords = "Ceramics, Contact angle, Corrosion, Femtosecond laser, Thermal barrier coating, Wetting",

author = "Kang, \{Y. X.\} and Y. Bai and Du, \{G. Q.\} and Yu, \{F. L.\} and Bao, \{C. G.\} and Wang, \{Y. T.\} and F. Ding",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2018",

month = oct,

day = "15",

doi = "10.1016/j.matlet.2018.06.066",

language = "英语",

volume = "229",

pages = "40--43",

journal = "Materials Letters",

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}

TY - JOUR

T1 - High temperature wettability between CMAS and YSZ coating with tailored surface microstructures

AU - Kang, Y. X.

AU - Bai, Y.

AU - Du, G. Q.

AU - Yu, F. L.

AU - Bao, C. G.

AU - Wang, Y. T.

AU - Ding, F.

PY - 2018/10/15

Y1 - 2018/10/15

N2 - In the present work, the wetting behavior of molten calcium-magnesium-aluminum-silicate (CMAS) on femtosecond laser ablated YSZ coatings is comparatively studied. The results suggest that femtosecond laser ablated coating possesses smaller initial contact angle compared with as-sprayed or polished YSZ coatings, but lower spreading rate and larger equilibrium contact angle. This difference can be attributed to: 1) restricted CMAS spreading by the ablated squares through pinning the solid-liquid-vapor triple-phase contact line; 2) retarded CMAS penetration by microrod-shaped structure inside the ablated squares. This study provides an effective method to improve the CMAS resistance of YSZ coating by femtosecond laser.

AB - In the present work, the wetting behavior of molten calcium-magnesium-aluminum-silicate (CMAS) on femtosecond laser ablated YSZ coatings is comparatively studied. The results suggest that femtosecond laser ablated coating possesses smaller initial contact angle compared with as-sprayed or polished YSZ coatings, but lower spreading rate and larger equilibrium contact angle. This difference can be attributed to: 1) restricted CMAS spreading by the ablated squares through pinning the solid-liquid-vapor triple-phase contact line; 2) retarded CMAS penetration by microrod-shaped structure inside the ablated squares. This study provides an effective method to improve the CMAS resistance of YSZ coating by femtosecond laser.

KW - Ceramics

KW - Contact angle

KW - Corrosion

KW - Femtosecond laser

KW - Thermal barrier coating

KW - Wetting

UR - https://www.scopus.com/pages/publications/85049102968

U2 - 10.1016/j.matlet.2018.06.066

DO - 10.1016/j.matlet.2018.06.066

M3 - 文章

AN - SCOPUS:85049102968

SN - 0167-577X

VL - 229

SP - 40

EP - 43

JO - Materials Letters

JF - Materials Letters

ER -

High temperature wettability between CMAS and YSZ coating with tailored surface microstructures

Abstract

Keywords

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