A high performance NiCoCrAlY bond coat manufactured using laser powder deposition

Lirong Luo; Xiao Shan; Zhonghua Zou; Chunshan Zhao; Xin Wang; Aiping Zhang; Xiaofeng Zhao; Fangwei Guo; Ping Xiao

doi:10.1016/j.corsci.2017.07.018

A high performance NiCoCrAlY bond coat manufactured using laser powder deposition

Lirong Luo, Xiao Shan, Zhonghua Zou, Chunshan Zhao, Xin Wang, Aiping Zhang, Xiaofeng Zhao, Fangwei Guo, Ping Xiao

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Abstract

A high performance NiCoCrAlY bond coat with dense dendritic microstructure was fabricated using laser powder deposition (LPD) technique. The thermally grown oxides (TGO) formed on the coating deposited by laser powder deposition is predominantly alumina instead of the mix oxides usually formed on the coatings prepared by air plasma spray and high velocity air fuel. Isothermal oxidation tests performed at 1150. °C reveal that the LPD bond coat shows significantly better spallation resistance and lower TGO growth rate. The superior spallation resistance of the TGO is further discussed in relation to the unique microstructure of the LPD bond coat.

Original language	English
Journal	Corrosion Science
Early online date	25 Jul 2017
DOIs	https://doi.org/10.1016/j.corsci.2017.07.018
Publication status	Published - 2017

Keywords

A. Metal coatings
B. Photoluminescence pizeospectroscopy
B. SEM
C. Oxidation

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10.1016/j.corsci.2017.07.018

Luo lirong-Corrosion ScienceAccepted author manuscript, 5.03 MB

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title = "A high performance NiCoCrAlY bond coat manufactured using laser powder deposition",

abstract = "A high performance NiCoCrAlY bond coat with dense dendritic microstructure was fabricated using laser powder deposition (LPD) technique. The thermally grown oxides (TGO) formed on the coating deposited by laser powder deposition is predominantly alumina instead of the mix oxides usually formed on the coatings prepared by air plasma spray and high velocity air fuel. Isothermal oxidation tests performed at 1150. °C reveal that the LPD bond coat shows significantly better spallation resistance and lower TGO growth rate. The superior spallation resistance of the TGO is further discussed in relation to the unique microstructure of the LPD bond coat.",

keywords = "A. Metal coatings, B. Photoluminescence pizeospectroscopy, B. SEM, C. Oxidation",

author = "Lirong Luo and Xiao Shan and Zhonghua Zou and Chunshan Zhao and Xin Wang and Aiping Zhang and Xiaofeng Zhao and Fangwei Guo and Ping Xiao",

year = "2017",

doi = "10.1016/j.corsci.2017.07.018",

language = "English",

journal = "Corrosion Science",

issn = "0010-938X",

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TY - JOUR

T1 - A high performance NiCoCrAlY bond coat manufactured using laser powder deposition

AU - Luo, Lirong

AU - Shan, Xiao

AU - Zou, Zhonghua

AU - Zhao, Chunshan

AU - Wang, Xin

AU - Zhang, Aiping

AU - Zhao, Xiaofeng

AU - Guo, Fangwei

AU - Xiao, Ping

PY - 2017

Y1 - 2017

N2 - A high performance NiCoCrAlY bond coat with dense dendritic microstructure was fabricated using laser powder deposition (LPD) technique. The thermally grown oxides (TGO) formed on the coating deposited by laser powder deposition is predominantly alumina instead of the mix oxides usually formed on the coatings prepared by air plasma spray and high velocity air fuel. Isothermal oxidation tests performed at 1150. °C reveal that the LPD bond coat shows significantly better spallation resistance and lower TGO growth rate. The superior spallation resistance of the TGO is further discussed in relation to the unique microstructure of the LPD bond coat.

AB - A high performance NiCoCrAlY bond coat with dense dendritic microstructure was fabricated using laser powder deposition (LPD) technique. The thermally grown oxides (TGO) formed on the coating deposited by laser powder deposition is predominantly alumina instead of the mix oxides usually formed on the coatings prepared by air plasma spray and high velocity air fuel. Isothermal oxidation tests performed at 1150. °C reveal that the LPD bond coat shows significantly better spallation resistance and lower TGO growth rate. The superior spallation resistance of the TGO is further discussed in relation to the unique microstructure of the LPD bond coat.

KW - A. Metal coatings

KW - B. Photoluminescence pizeospectroscopy

KW - B. SEM

KW - C. Oxidation

UR - http://www.scopus.com/inward/record.url?scp=85026644348&partnerID=8YFLogxK

U2 - 10.1016/j.corsci.2017.07.018

DO - 10.1016/j.corsci.2017.07.018

M3 - Article

AN - SCOPUS:85026644348

SN - 0010-938X

JO - Corrosion Science

JF - Corrosion Science

ER -

A high performance NiCoCrAlY bond coat manufactured using laser powder deposition

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Keywords

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