Improving the hot corrosion resistance of plasma sprayed ceria-yttria stabilized zirconia thermal barrier coatings by laser surface treatment

Raheleh Ahmadi-Pidani; Reza Shoja-Razavi; Reza Mozafarinia; Hossein Jamali

doi:10.1016/j.matdes.2013.12.075

Improving the hot corrosion resistance of plasma sprayed ceria-yttria stabilized zirconia thermal barrier coatings by laser surface treatment

Raheleh Ahmadi-Pidani, Reza Shoja-Razavi, Reza Mozafarinia, Hossein Jamali

Research output: Journal Publication › Article › peer-review

89 Citations (Scopus)

Abstract

Ceria-yttria stabilized zirconia (CYSZ) thermal barrier coatings (TBCs) were deposited by air plasma spraying on NiCoCrAlY-coated Inconel 738LC substrates. After that, the surface of plasma sprayed CYSZ TBCs were glazed using a pulsed Nd:YAG laser. The effects of laser glazing on hot corrosion resistance of the coatings were evaluated in presence of 45wt%Na₂SO₄+55wt%V₂O₅ corrosive molten salt at 1000°C. The results revealed that the hot corrosion resistance of plasma sprayed CYSZ TBCs were enhanced more than twofold by laser surface glazing due to reducing specific reactive area of the dense glazed surface layer and consequently, decreasing the reaction between molten salt and zirconia stabilizers.

Original language	English
Pages (from-to)	336-341
Number of pages	6
Journal	Materials and Design
Volume	57
DOIs	https://doi.org/10.1016/j.matdes.2013.12.075
Publication status	Published - May 2014
Externally published	Yes

Keywords

Air plasma spraying
Ceria-yttria stabilized zirconia
Hot corrosion
Laser glazing
Thermal barrier coating

ASJC Scopus subject areas

General Materials Science
Mechanics of Materials
Mechanical Engineering

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10.1016/j.matdes.2013.12.075

Cite this

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title = "Improving the hot corrosion resistance of plasma sprayed ceria-yttria stabilized zirconia thermal barrier coatings by laser surface treatment",

abstract = "Ceria-yttria stabilized zirconia (CYSZ) thermal barrier coatings (TBCs) were deposited by air plasma spraying on NiCoCrAlY-coated Inconel 738LC substrates. After that, the surface of plasma sprayed CYSZ TBCs were glazed using a pulsed Nd:YAG laser. The effects of laser glazing on hot corrosion resistance of the coatings were evaluated in presence of 45wt\%Na2SO4+55wt\%V2O5 corrosive molten salt at 1000°C. The results revealed that the hot corrosion resistance of plasma sprayed CYSZ TBCs were enhanced more than twofold by laser surface glazing due to reducing specific reactive area of the dense glazed surface layer and consequently, decreasing the reaction between molten salt and zirconia stabilizers.",

keywords = "Air plasma spraying, Ceria-yttria stabilized zirconia, Hot corrosion, Laser glazing, Thermal barrier coating",

author = "Raheleh Ahmadi-Pidani and Reza Shoja-Razavi and Reza Mozafarinia and Hossein Jamali",

year = "2014",

month = may,

doi = "10.1016/j.matdes.2013.12.075",

language = "English",

volume = "57",

pages = "336--341",

journal = "Materials and Design",

issn = "0261-3069",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Improving the hot corrosion resistance of plasma sprayed ceria-yttria stabilized zirconia thermal barrier coatings by laser surface treatment

AU - Ahmadi-Pidani, Raheleh

AU - Shoja-Razavi, Reza

AU - Mozafarinia, Reza

AU - Jamali, Hossein

PY - 2014/5

Y1 - 2014/5

N2 - Ceria-yttria stabilized zirconia (CYSZ) thermal barrier coatings (TBCs) were deposited by air plasma spraying on NiCoCrAlY-coated Inconel 738LC substrates. After that, the surface of plasma sprayed CYSZ TBCs were glazed using a pulsed Nd:YAG laser. The effects of laser glazing on hot corrosion resistance of the coatings were evaluated in presence of 45wt%Na2SO4+55wt%V2O5 corrosive molten salt at 1000°C. The results revealed that the hot corrosion resistance of plasma sprayed CYSZ TBCs were enhanced more than twofold by laser surface glazing due to reducing specific reactive area of the dense glazed surface layer and consequently, decreasing the reaction between molten salt and zirconia stabilizers.

AB - Ceria-yttria stabilized zirconia (CYSZ) thermal barrier coatings (TBCs) were deposited by air plasma spraying on NiCoCrAlY-coated Inconel 738LC substrates. After that, the surface of plasma sprayed CYSZ TBCs were glazed using a pulsed Nd:YAG laser. The effects of laser glazing on hot corrosion resistance of the coatings were evaluated in presence of 45wt%Na2SO4+55wt%V2O5 corrosive molten salt at 1000°C. The results revealed that the hot corrosion resistance of plasma sprayed CYSZ TBCs were enhanced more than twofold by laser surface glazing due to reducing specific reactive area of the dense glazed surface layer and consequently, decreasing the reaction between molten salt and zirconia stabilizers.

KW - Air plasma spraying

KW - Ceria-yttria stabilized zirconia

KW - Hot corrosion

KW - Laser glazing

KW - Thermal barrier coating

UR - https://www.scopus.com/pages/publications/84892835597

U2 - 10.1016/j.matdes.2013.12.075

DO - 10.1016/j.matdes.2013.12.075

M3 - Article

AN - SCOPUS:84892835597

SN - 0261-3069

VL - 57

SP - 336

EP - 341

JO - Materials and Design

JF - Materials and Design

ER -

Improving the hot corrosion resistance of plasma sprayed ceria-yttria stabilized zirconia thermal barrier coatings by laser surface treatment

Abstract

Keywords

ASJC Scopus subject areas

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