Thermal stability and sintering behavior of plasma sprayed nanostructured 7YSZ, 15YSZ and 5.5SYSZ coatings at elevated temperatures

M. R. Loghman-Estarki; R. Shoja Razavi; H. Jamali

doi:10.1016/j.ceramint.2016.05.203

Thermal stability and sintering behavior of plasma sprayed nanostructured 7YSZ, 15YSZ and 5.5SYSZ coatings at elevated temperatures

M. R. Loghman-Estarki, R. Shoja Razavi, H. Jamali

Research output: Journal Publication › Article › peer-review

34 Citations (Scopus)

Abstract

Nanostructured scandia, yttria doped zirconia (5.5SYSZ), 7 wt% yttria stabilized zirconia (7YSZ) and 15YSZ thermal barrier coatings (TBCs) were produced by plasma spraying on nickel-based superalloy substrates with NiCrAlY as the bond coat. The thermal stability and sintering behavior of the three as-sprayed TBCs at 1480 °C were investigated. The results indicated that the thermal stability of SYSZ and TBCs was longer than the 7YSZ TBCs due to higher amount of tetragonal phase. Furthermore, the results demonstrated that the nanostructured 7YSZ coating exhibits higher sintering resistance than 5.5SYSZ TBC.

Original language	English
Pages (from-to)	14374-14383
Number of pages	10
Journal	Ceramics International
Volume	42
Issue number	13
DOIs	https://doi.org/10.1016/j.ceramint.2016.05.203
Publication status	Published - Oct 2016
Externally published	Yes

Keywords

Atmospheric plasma spraying
Nanostructured thermal barrier coatings
Sintering resistance
Thermal stability

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Process Chemistry and Technology
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/j.ceramint.2016.05.203

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title = "Thermal stability and sintering behavior of plasma sprayed nanostructured 7YSZ, 15YSZ and 5.5SYSZ coatings at elevated temperatures",

abstract = "Nanostructured scandia, yttria doped zirconia (5.5SYSZ), 7 wt\% yttria stabilized zirconia (7YSZ) and 15YSZ thermal barrier coatings (TBCs) were produced by plasma spraying on nickel-based superalloy substrates with NiCrAlY as the bond coat. The thermal stability and sintering behavior of the three as-sprayed TBCs at 1480 °C were investigated. The results indicated that the thermal stability of SYSZ and TBCs was longer than the 7YSZ TBCs due to higher amount of tetragonal phase. Furthermore, the results demonstrated that the nanostructured 7YSZ coating exhibits higher sintering resistance than 5.5SYSZ TBC.",

keywords = "Atmospheric plasma spraying, Nanostructured thermal barrier coatings, Sintering resistance, Thermal stability",

author = "Loghman-Estarki, \{M. R.\} and \{Shoja Razavi\}, R. and H. Jamali",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier Ltd and Techna Group S.r.l.",

year = "2016",

month = oct,

doi = "10.1016/j.ceramint.2016.05.203",

language = "English",

volume = "42",

pages = "14374--14383",

journal = "Ceramics International",

issn = "0272-8842",

publisher = "Elsevier Ltd.",

number = "13",

}

TY - JOUR

T1 - Thermal stability and sintering behavior of plasma sprayed nanostructured 7YSZ, 15YSZ and 5.5SYSZ coatings at elevated temperatures

AU - Loghman-Estarki, M. R.

AU - Shoja Razavi, R.

AU - Jamali, H.

PY - 2016/10

Y1 - 2016/10

N2 - Nanostructured scandia, yttria doped zirconia (5.5SYSZ), 7 wt% yttria stabilized zirconia (7YSZ) and 15YSZ thermal barrier coatings (TBCs) were produced by plasma spraying on nickel-based superalloy substrates with NiCrAlY as the bond coat. The thermal stability and sintering behavior of the three as-sprayed TBCs at 1480 °C were investigated. The results indicated that the thermal stability of SYSZ and TBCs was longer than the 7YSZ TBCs due to higher amount of tetragonal phase. Furthermore, the results demonstrated that the nanostructured 7YSZ coating exhibits higher sintering resistance than 5.5SYSZ TBC.

AB - Nanostructured scandia, yttria doped zirconia (5.5SYSZ), 7 wt% yttria stabilized zirconia (7YSZ) and 15YSZ thermal barrier coatings (TBCs) were produced by plasma spraying on nickel-based superalloy substrates with NiCrAlY as the bond coat. The thermal stability and sintering behavior of the three as-sprayed TBCs at 1480 °C were investigated. The results indicated that the thermal stability of SYSZ and TBCs was longer than the 7YSZ TBCs due to higher amount of tetragonal phase. Furthermore, the results demonstrated that the nanostructured 7YSZ coating exhibits higher sintering resistance than 5.5SYSZ TBC.

KW - Atmospheric plasma spraying

KW - Nanostructured thermal barrier coatings

KW - Sintering resistance

KW - Thermal stability

UR - https://www.scopus.com/pages/publications/84977483793

U2 - 10.1016/j.ceramint.2016.05.203

DO - 10.1016/j.ceramint.2016.05.203

M3 - Article

AN - SCOPUS:84977483793

SN - 0272-8842

VL - 42

SP - 14374

EP - 14383

JO - Ceramics International

JF - Ceramics International

IS - 13

ER -

Thermal stability and sintering behavior of plasma sprayed nanostructured 7YSZ, 15YSZ and 5.5SYSZ coatings at elevated temperatures

Abstract

Keywords

ASJC Scopus subject areas

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