Plasma-sprayed nanostructured scandia-yttria and ceria-yttria codoped zirconia coatings: Microstructure, bonding strength and thermal insulation properties

M. R. Loghman-Estarki; M. Hajizadeh-Oghaz; H. Edris; R. Shoja Razavi; A. Ghasemi; Z. Valefi; H. Jamali

doi:10.1016/j.ceramint.2018.03.204

Plasma-sprayed nanostructured scandia-yttria and ceria-yttria codoped zirconia coatings: Microstructure, bonding strength and thermal insulation properties

M. R. Loghman-Estarki^*
, M. Hajizadeh-Oghaz
, H. Edris
, R. Shoja Razavi
, A. Ghasemi
, Z. Valefi
, H. Jamali

^*Corresponding author for this work

Research output: Journal Publication › Article › peer-review

26 Citations (Scopus)

Abstract

Microstructure, thermal insulation behavior and bonding strength of nanostructured 5%scandia, 0.5%yttria codoped zirconia (5.5 ScYSZ) and 25%ceria, 2.5%yttria co stabilized zirconia (27.5%CYSZ) coatings were investigated. ScYSZ and CYSZ nanostructured granules (as a top coat) and commercial NiCrAlY powder (as a bond coat) were thermal sprayed on an Inconel 738 substrate. The results revealed ScYSZ coating to have higher bonding strength. Nevertheless, due to higher porosity and the presence of local strains, the thermal insulation of nanostructured CYSZ coating was higher than for ScYSZ coating.

Original language	English
Pages (from-to)	12042-12047
Number of pages	6
Journal	Ceramics International
Volume	44
Issue number	11
DOIs	https://doi.org/10.1016/j.ceramint.2018.03.204
Publication status	Published - 1 Aug 2018
Externally published	Yes

Free Keywords

CYSZ
ScYSZ
Thermal insulation capability

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.2018.03.204

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@article{38e6c45102694eb49804a422cc4d228e,

title = "Plasma-sprayed nanostructured scandia-yttria and ceria-yttria codoped zirconia coatings: Microstructure, bonding strength and thermal insulation properties",

abstract = "Microstructure, thermal insulation behavior and bonding strength of nanostructured 5\%scandia, 0.5\%yttria codoped zirconia (5.5 ScYSZ) and 25\%ceria, 2.5\%yttria co stabilized zirconia (27.5\%CYSZ) coatings were investigated. ScYSZ and CYSZ nanostructured granules (as a top coat) and commercial NiCrAlY powder (as a bond coat) were thermal sprayed on an Inconel 738 substrate. The results revealed ScYSZ coating to have higher bonding strength. Nevertheless, due to higher porosity and the presence of local strains, the thermal insulation of nanostructured CYSZ coating was higher than for ScYSZ coating.",

keywords = "CYSZ, ScYSZ, Thermal insulation capability",

author = "Loghman-Estarki, \{M. R.\} and M. Hajizadeh-Oghaz and H. Edris and \{Shoja Razavi\}, R. and A. Ghasemi and Z. Valefi and H. Jamali",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd and Techna Group S.r.l.",

year = "2018",

month = aug,

day = "1",

doi = "10.1016/j.ceramint.2018.03.204",

language = "English",

volume = "44",

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journal = "Ceramics International",

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Loghman-Estarki, MR, Hajizadeh-Oghaz, M, Edris, H, Shoja Razavi, R, Ghasemi, A, Valefi, Z & Jamali, H 2018, 'Plasma-sprayed nanostructured scandia-yttria and ceria-yttria codoped zirconia coatings: Microstructure, bonding strength and thermal insulation properties', Ceramics International, vol. 44, no. 11, pp. 12042-12047. https://doi.org/10.1016/j.ceramint.2018.03.204

TY - JOUR

T1 - Plasma-sprayed nanostructured scandia-yttria and ceria-yttria codoped zirconia coatings

T2 - Microstructure, bonding strength and thermal insulation properties

AU - Loghman-Estarki, M. R.

AU - Hajizadeh-Oghaz, M.

AU - Edris, H.

AU - Shoja Razavi, R.

AU - Ghasemi, A.

AU - Valefi, Z.

AU - Jamali, H.

PY - 2018/8/1

Y1 - 2018/8/1

N2 - Microstructure, thermal insulation behavior and bonding strength of nanostructured 5%scandia, 0.5%yttria codoped zirconia (5.5 ScYSZ) and 25%ceria, 2.5%yttria co stabilized zirconia (27.5%CYSZ) coatings were investigated. ScYSZ and CYSZ nanostructured granules (as a top coat) and commercial NiCrAlY powder (as a bond coat) were thermal sprayed on an Inconel 738 substrate. The results revealed ScYSZ coating to have higher bonding strength. Nevertheless, due to higher porosity and the presence of local strains, the thermal insulation of nanostructured CYSZ coating was higher than for ScYSZ coating.

AB - Microstructure, thermal insulation behavior and bonding strength of nanostructured 5%scandia, 0.5%yttria codoped zirconia (5.5 ScYSZ) and 25%ceria, 2.5%yttria co stabilized zirconia (27.5%CYSZ) coatings were investigated. ScYSZ and CYSZ nanostructured granules (as a top coat) and commercial NiCrAlY powder (as a bond coat) were thermal sprayed on an Inconel 738 substrate. The results revealed ScYSZ coating to have higher bonding strength. Nevertheless, due to higher porosity and the presence of local strains, the thermal insulation of nanostructured CYSZ coating was higher than for ScYSZ coating.

KW - CYSZ

KW - ScYSZ

KW - Thermal insulation capability

UR - https://www.scopus.com/pages/publications/85044928367

U2 - 10.1016/j.ceramint.2018.03.204

DO - 10.1016/j.ceramint.2018.03.204

M3 - Article

AN - SCOPUS:85044928367

SN - 0272-8842

VL - 44

SP - 12042

EP - 12047

JO - Ceramics International

JF - Ceramics International

IS - 11

ER -

Plasma-sprayed nanostructured scandia-yttria and ceria-yttria codoped zirconia coatings: Microstructure, bonding strength and thermal insulation properties

Abstract

Free Keywords

ASJC Scopus subject areas

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