Novel route of a self-healing film preparation in laser re-melted thermal barrier coatings

Zhengjie Fan; Kedian Wang; Xia Dong; Rujia Wang; Wenqiang Duan; Shuai Zhang; Xuesong Mei; Wenjun Wang

doi:10.1016/j.jallcom.2017.06.236

Novel route of a self-healing film preparation in laser re-melted thermal barrier coatings

Zhengjie Fan
, Kedian Wang
, Xia Dong
, Rujia Wang
, Wenqiang Duan
, Shuai Zhang
, Xuesong Mei
, Wenjun Wang

School of Mechanical Engineering

Xi'an Jiaotong University

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

6 Scopus citations

Abstract

In this study, a novel self-healing method based on pressure sintering was employed for segmented cracks healing, the latter formed in the laser re-melted ZrO₂-7wt% Y₂O₃ thermal barrier coatings (TBCs), by four sealed particles respectively. Full metallurgically bonded sealed films were formed in the segmented gaps for the application of nano-Al₂O₃+Ni-20wt% Al particles, whereas a partial healing occurred for the other particles. Also, the necessary thermodynamic analysis and formation mechanisms of the sealed films were also investigated. The cyclic oxidation results confirmed that the fully sealed nano-Al₂O₃ reinforced films had superior anti-oxidation resistance in comparison with the other sealed coatings.

Original language	English
Pages (from-to)	743-750
Number of pages	8
Journal	Journal of Alloys and Compounds
Volume	723
DOIs	https://doi.org/10.1016/j.jallcom.2017.06.236
State	Published - 2017

Keywords

Coatings
Laser processing
Microstructure
Oxidation
Sintering

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10.1016/j.jallcom.2017.06.236

Cite this

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title = "Novel route of a self-healing film preparation in laser re-melted thermal barrier coatings",

abstract = "In this study, a novel self-healing method based on pressure sintering was employed for segmented cracks healing, the latter formed in the laser re-melted ZrO2-7wt\% Y2O3 thermal barrier coatings (TBCs), by four sealed particles respectively. Full metallurgically bonded sealed films were formed in the segmented gaps for the application of nano-Al2O3+Ni-20wt\% Al particles, whereas a partial healing occurred for the other particles. Also, the necessary thermodynamic analysis and formation mechanisms of the sealed films were also investigated. The cyclic oxidation results confirmed that the fully sealed nano-Al2O3 reinforced films had superior anti-oxidation resistance in comparison with the other sealed coatings.",

keywords = "Coatings, Laser processing, Microstructure, Oxidation, Sintering",

author = "Zhengjie Fan and Kedian Wang and Xia Dong and Rujia Wang and Wenqiang Duan and Shuai Zhang and Xuesong Mei and Wenjun Wang",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

year = "2017",

doi = "10.1016/j.jallcom.2017.06.236",

language = "英语",

volume = "723",

pages = "743--750",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Novel route of a self-healing film preparation in laser re-melted thermal barrier coatings

AU - Fan, Zhengjie

AU - Wang, Kedian

AU - Dong, Xia

AU - Wang, Rujia

AU - Duan, Wenqiang

AU - Zhang, Shuai

AU - Mei, Xuesong

AU - Wang, Wenjun

PY - 2017

Y1 - 2017

N2 - In this study, a novel self-healing method based on pressure sintering was employed for segmented cracks healing, the latter formed in the laser re-melted ZrO2-7wt% Y2O3 thermal barrier coatings (TBCs), by four sealed particles respectively. Full metallurgically bonded sealed films were formed in the segmented gaps for the application of nano-Al2O3+Ni-20wt% Al particles, whereas a partial healing occurred for the other particles. Also, the necessary thermodynamic analysis and formation mechanisms of the sealed films were also investigated. The cyclic oxidation results confirmed that the fully sealed nano-Al2O3 reinforced films had superior anti-oxidation resistance in comparison with the other sealed coatings.

AB - In this study, a novel self-healing method based on pressure sintering was employed for segmented cracks healing, the latter formed in the laser re-melted ZrO2-7wt% Y2O3 thermal barrier coatings (TBCs), by four sealed particles respectively. Full metallurgically bonded sealed films were formed in the segmented gaps for the application of nano-Al2O3+Ni-20wt% Al particles, whereas a partial healing occurred for the other particles. Also, the necessary thermodynamic analysis and formation mechanisms of the sealed films were also investigated. The cyclic oxidation results confirmed that the fully sealed nano-Al2O3 reinforced films had superior anti-oxidation resistance in comparison with the other sealed coatings.

KW - Coatings

KW - Laser processing

KW - Microstructure

KW - Oxidation

KW - Sintering

UR - https://www.scopus.com/pages/publications/85021425937

U2 - 10.1016/j.jallcom.2017.06.236

DO - 10.1016/j.jallcom.2017.06.236

M3 - 文章

AN - SCOPUS:85021425937

SN - 0925-8388

VL - 723

SP - 743

EP - 750

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

Novel route of a self-healing film preparation in laser re-melted thermal barrier coatings

Abstract

Keywords

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