Effect of ion implantation on growth of thermally grown oxide in MCrAlY coating for TBC

Thermal barrier coatings (TBCs) have been widely used in various gas turbines for aircraft propulsion and power generation. TBCs consist of a metal bond coat and a ceramic top coat of YSZ. It is generally known that the TBC′ life strongly depends on the thermally grown oxide (TGO) because failure of...

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Veröffentlicht in:Surface & coatings technology 2010-12, Vol.205, p.S435-S438
Hauptverfasser: Byon, Eungsun, Zhang, Shihong, Lee, Sung-Hun, Lee, Goo-Hyun, Kwon, Sik-Chol
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container_end_page S438
container_issue
container_start_page S435
container_title Surface & coatings technology
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creator Byon, Eungsun
Zhang, Shihong
Lee, Sung-Hun
Lee, Goo-Hyun
Kwon, Sik-Chol
description Thermal barrier coatings (TBCs) have been widely used in various gas turbines for aircraft propulsion and power generation. TBCs consist of a metal bond coat and a ceramic top coat of YSZ. It is generally known that the TBC′ life strongly depends on the thermally grown oxide (TGO) because failure of TBCs occurs when the TGO reached a critical thickness. In this study, ion implantation of novel elements has been made on the bond coat which acts as an oxidation barrier for suppressing the TGO growth. The effects of type of ion implanted elements on the TGO formation were investigated. The oxidized specimens at 1150 °C were characterized by SEM, XRD, RBS and AES. From the results, CoNiCrAlY bond coat with an oxidation barrier was found to be effective in suppressing growth of the TGO.
doi_str_mv 10.1016/j.surfcoat.2010.08.134
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TBCs consist of a metal bond coat and a ceramic top coat of YSZ. It is generally known that the TBC′ life strongly depends on the thermally grown oxide (TGO) because failure of TBCs occurs when the TGO reached a critical thickness. In this study, ion implantation of novel elements has been made on the bond coat which acts as an oxidation barrier for suppressing the TGO growth. The effects of type of ion implanted elements on the TGO formation were investigated. The oxidized specimens at 1150 °C were characterized by SEM, XRD, RBS and AES. 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source Elsevier ScienceDirect Journals Complete - AutoHoldings
subjects Aircraft propulsion
Applied sciences
Barriers
Bonding
Coating
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Failure
Ion implantation
Materials science
Metallic coatings
Metals. Metallurgy
Nonmetallic coatings
Other surface treatments
Oxidation
Physics
Plasma source ion implantation
Production techniques
Retarding
Surface treatment
Surface treatments
Thermal barrier coating
Thermally grown oxide
Thermally grown oxides
title Effect of ion implantation on growth of thermally grown oxide in MCrAlY coating for TBC
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