Evaluation of hot corrosion behavior of plasma sprayed scandia and yttria co-stabilized nanostructured thermal barrier coatings in the presence of molten sulfate and vanadate salt

Mohammad Reza Loghman-Estarki; Mehrdad Nejati; Hossein Edris; Reza Shoja Razavi; Hossein Jamali; Amir Hossein Pakseresht

doi:10.1016/j.jeurceramsoc.2014.08.029

Evaluation of hot corrosion behavior of plasma sprayed scandia and yttria co-stabilized nanostructured thermal barrier coatings in the presence of molten sulfate and vanadate salt

Mohammad Reza Loghman-Estarki
, Mehrdad Nejati
, Hossein Edris
, Reza Shoja Razavi
, Hossein Jamali
, Amir Hossein Pakseresht

Research output: Journal Publication › Article › peer-review

106 Citations (Scopus)

Abstract

In this study, the substrates of Inconel 738-LC superalloy were first sprayed with an NiCrAlY bondcoat and then with a nanostructured scandia (3.6mol%) and yttria (0.4mol%) co-stabilized zirconia (4SYSZ) topcoat by air plasma spraying (APS). Hot corrosion studies of plasma sprayed thermal barrier coatings (TBCs) were conducted in 45wt% Na₂SO₄+55wt% V₂O₅ molten salt at 910°C for 300h. The results show that the failure of this TBC occurred in bondcoating layer due to the formation of mixed oxide (NiO, NiAl₂O₄ and NiCr₂O₄) in this layer.

Original language	English
Pages (from-to)	693-702
Number of pages	10
Journal	Journal of the European Ceramic Society
Volume	35
Issue number	2
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2014.08.029
Publication status	Published - 1 Feb 2015
Externally published	Yes

Free Keywords

Atmospheric plasma spray
Hot corrosion
Nanostructured thermal barrier coating
SYSZ

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

Access to Document

10.1016/j.jeurceramsoc.2014.08.029

Cite this

Loghman-Estarki, M. R., Nejati, M., Edris, H., Shoja Razavi, R., Jamali, H., & Pakseresht, A. H. (2015). Evaluation of hot corrosion behavior of plasma sprayed scandia and yttria co-stabilized nanostructured thermal barrier coatings in the presence of molten sulfate and vanadate salt. Journal of the European Ceramic Society, 35(2), 693-702. https://doi.org/10.1016/j.jeurceramsoc.2014.08.029

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title = "Evaluation of hot corrosion behavior of plasma sprayed scandia and yttria co-stabilized nanostructured thermal barrier coatings in the presence of molten sulfate and vanadate salt",

abstract = "In this study, the substrates of Inconel 738-LC superalloy were first sprayed with an NiCrAlY bondcoat and then with a nanostructured scandia (3.6mol\%) and yttria (0.4mol\%) co-stabilized zirconia (4SYSZ) topcoat by air plasma spraying (APS). Hot corrosion studies of plasma sprayed thermal barrier coatings (TBCs) were conducted in 45wt\% Na2SO4+55wt\% V2O5 molten salt at 910°C for 300h. The results show that the failure of this TBC occurred in bondcoating layer due to the formation of mixed oxide (NiO, NiAl2O4 and NiCr2O4) in this layer.",

keywords = "Atmospheric plasma spray, Hot corrosion, Nanostructured thermal barrier coating, SYSZ",

author = "Loghman-Estarki, \{Mohammad Reza\} and Mehrdad Nejati and Hossein Edris and \{Shoja Razavi\}, Reza and Hossein Jamali and Pakseresht, \{Amir Hossein\}",

note = "Publisher Copyright: {\textcopyright} 2014 Elsevier Ltd.",

year = "2015",

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day = "1",

doi = "10.1016/j.jeurceramsoc.2014.08.029",

language = "English",

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Loghman-Estarki, MR, Nejati, M, Edris, H, Shoja Razavi, R, Jamali, H & Pakseresht, AH 2015, 'Evaluation of hot corrosion behavior of plasma sprayed scandia and yttria co-stabilized nanostructured thermal barrier coatings in the presence of molten sulfate and vanadate salt', Journal of the European Ceramic Society, vol. 35, no. 2, pp. 693-702. https://doi.org/10.1016/j.jeurceramsoc.2014.08.029

Evaluation of hot corrosion behavior of plasma sprayed scandia and yttria co-stabilized nanostructured thermal barrier coatings in the presence of molten sulfate and vanadate salt. / Loghman-Estarki, Mohammad Reza; Nejati, Mehrdad; Edris, Hossein et al.
In: Journal of the European Ceramic Society, Vol. 35, No. 2, 01.02.2015, p. 693-702.

Research output: Journal Publication › Article › peer-review

TY - JOUR

T1 - Evaluation of hot corrosion behavior of plasma sprayed scandia and yttria co-stabilized nanostructured thermal barrier coatings in the presence of molten sulfate and vanadate salt

AU - Loghman-Estarki, Mohammad Reza

AU - Nejati, Mehrdad

AU - Edris, Hossein

AU - Shoja Razavi, Reza

AU - Jamali, Hossein

AU - Pakseresht, Amir Hossein

PY - 2015/2/1

Y1 - 2015/2/1

N2 - In this study, the substrates of Inconel 738-LC superalloy were first sprayed with an NiCrAlY bondcoat and then with a nanostructured scandia (3.6mol%) and yttria (0.4mol%) co-stabilized zirconia (4SYSZ) topcoat by air plasma spraying (APS). Hot corrosion studies of plasma sprayed thermal barrier coatings (TBCs) were conducted in 45wt% Na2SO4+55wt% V2O5 molten salt at 910°C for 300h. The results show that the failure of this TBC occurred in bondcoating layer due to the formation of mixed oxide (NiO, NiAl2O4 and NiCr2O4) in this layer.

AB - In this study, the substrates of Inconel 738-LC superalloy were first sprayed with an NiCrAlY bondcoat and then with a nanostructured scandia (3.6mol%) and yttria (0.4mol%) co-stabilized zirconia (4SYSZ) topcoat by air plasma spraying (APS). Hot corrosion studies of plasma sprayed thermal barrier coatings (TBCs) were conducted in 45wt% Na2SO4+55wt% V2O5 molten salt at 910°C for 300h. The results show that the failure of this TBC occurred in bondcoating layer due to the formation of mixed oxide (NiO, NiAl2O4 and NiCr2O4) in this layer.

KW - Atmospheric plasma spray

KW - Hot corrosion

KW - Nanostructured thermal barrier coating

KW - SYSZ

UR - https://www.scopus.com/pages/publications/84908308500

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DO - 10.1016/j.jeurceramsoc.2014.08.029

M3 - Article

AN - SCOPUS:84908308500

SN - 0955-2219

VL - 35

SP - 693

EP - 702

JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

IS - 2

ER -

Evaluation of hot corrosion behavior of plasma sprayed scandia and yttria co-stabilized nanostructured thermal barrier coatings in the presence of molten sulfate and vanadate salt

Abstract

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