Microstructural design and oxidation resistance of CoNiCrAlY alloy coatings in thermal barrier coating system

J. J. Tang; Y. Bai; J. C. Zhang; K. Liu; X. Y. Liu; P. Zhang; Y. Wang; L. Zhang; G. Y. Liang; Y. Gao; J. F. Yang

doi:10.1016/j.jallcom.2016.07.018

Microstructural design and oxidation resistance of CoNiCrAlY alloy coatings in thermal barrier coating system

J. J. Tang
, Y. Bai
, J. C. Zhang
, K. Liu
, X. Y. Liu
, P. Zhang
, Y. Wang
, L. Zhang
, G. Y. Liang
, Y. Gao
, J. F. Yang

Xi'an Jiaotong University

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

63 Scopus citations

Abstract

This paper aims to improve the oxidation resistance of plasma-sprayed CoNiCrAlY coatings by optimizing microstructure. A series of coatings that contained 22.5 ± 2.3%, 35.4 ± 2.2%, and 57.8 ± 2.5% unmelted particles were fabricated by a high efficiency supersonic plasma spraying (SAPS) system. Experimental results showed that the β phase mainly existed in the unmelted particles, and its content increased with increasing the content of unmelted particles. The coating that contained 35.4 ± 2.2% unmelted particles showed the best oxidation resistance. An accurate numerical model obtained from molecular dynamics simulation was used to explain the experimental results. Our study confirmed that an appropriate amount of unmelted particles can improve the oxidation resistance of CoNiCrAlY coating.

Original language	English
Pages (from-to)	729-741
Number of pages	13
Journal	Journal of Alloys and Compounds
Volume	688
DOIs	https://doi.org/10.1016/j.jallcom.2016.07.018
State	Published - 2016

Keywords

Alloy coatings
Molecular dynamics simulation
Oxidation resistance
TGOs growth
Unmelted particles

Access to Document

10.1016/j.jallcom.2016.07.018

Cite this

@article{928fc1bc9a6a4c17b70b5a36292cc3d8,

title = "Microstructural design and oxidation resistance of CoNiCrAlY alloy coatings in thermal barrier coating system",

abstract = "This paper aims to improve the oxidation resistance of plasma-sprayed CoNiCrAlY coatings by optimizing microstructure. A series of coatings that contained 22.5 ± 2.3\%, 35.4 ± 2.2\%, and 57.8 ± 2.5\% unmelted particles were fabricated by a high efficiency supersonic plasma spraying (SAPS) system. Experimental results showed that the β phase mainly existed in the unmelted particles, and its content increased with increasing the content of unmelted particles. The coating that contained 35.4 ± 2.2\% unmelted particles showed the best oxidation resistance. An accurate numerical model obtained from molecular dynamics simulation was used to explain the experimental results. Our study confirmed that an appropriate amount of unmelted particles can improve the oxidation resistance of CoNiCrAlY coating.",

keywords = "Alloy coatings, Molecular dynamics simulation, Oxidation resistance, TGOs growth, Unmelted particles",

author = "Tang, \{J. J.\} and Y. Bai and Zhang, \{J. C.\} and K. Liu and Liu, \{X. Y.\} and P. Zhang and Y. Wang and L. Zhang and Liang, \{G. Y.\} and Y. Gao and Yang, \{J. F.\}",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier B.V.",

year = "2016",

doi = "10.1016/j.jallcom.2016.07.018",

language = "英语",

volume = "688",

pages = "729--741",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Microstructural design and oxidation resistance of CoNiCrAlY alloy coatings in thermal barrier coating system

AU - Tang, J. J.

AU - Bai, Y.

AU - Zhang, J. C.

AU - Liu, K.

AU - Liu, X. Y.

AU - Zhang, P.

AU - Wang, Y.

AU - Zhang, L.

AU - Liang, G. Y.

AU - Gao, Y.

AU - Yang, J. F.

PY - 2016

Y1 - 2016

N2 - This paper aims to improve the oxidation resistance of plasma-sprayed CoNiCrAlY coatings by optimizing microstructure. A series of coatings that contained 22.5 ± 2.3%, 35.4 ± 2.2%, and 57.8 ± 2.5% unmelted particles were fabricated by a high efficiency supersonic plasma spraying (SAPS) system. Experimental results showed that the β phase mainly existed in the unmelted particles, and its content increased with increasing the content of unmelted particles. The coating that contained 35.4 ± 2.2% unmelted particles showed the best oxidation resistance. An accurate numerical model obtained from molecular dynamics simulation was used to explain the experimental results. Our study confirmed that an appropriate amount of unmelted particles can improve the oxidation resistance of CoNiCrAlY coating.

AB - This paper aims to improve the oxidation resistance of plasma-sprayed CoNiCrAlY coatings by optimizing microstructure. A series of coatings that contained 22.5 ± 2.3%, 35.4 ± 2.2%, and 57.8 ± 2.5% unmelted particles were fabricated by a high efficiency supersonic plasma spraying (SAPS) system. Experimental results showed that the β phase mainly existed in the unmelted particles, and its content increased with increasing the content of unmelted particles. The coating that contained 35.4 ± 2.2% unmelted particles showed the best oxidation resistance. An accurate numerical model obtained from molecular dynamics simulation was used to explain the experimental results. Our study confirmed that an appropriate amount of unmelted particles can improve the oxidation resistance of CoNiCrAlY coating.

KW - Alloy coatings

KW - Molecular dynamics simulation

KW - Oxidation resistance

KW - TGOs growth

KW - Unmelted particles

UR - https://www.scopus.com/pages/publications/84978805744

U2 - 10.1016/j.jallcom.2016.07.018

DO - 10.1016/j.jallcom.2016.07.018

M3 - 文章

AN - SCOPUS:84978805744

SN - 0925-8388

VL - 688

SP - 729

EP - 741

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

Microstructural design and oxidation resistance of CoNiCrAlY alloy coatings in thermal barrier coating system

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this