Effect of scandia content on the thermal shock behavior of SYSZ thermal sprayed barrier coatings

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

doi:10.1016/j.ceramint.2016.04.018

Effect of scandia content on the thermal shock behavior of SYSZ thermal sprayed barrier coatings

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

Research output: Journal Publication › Article › peer-review

42 Citations (Scopus)

Abstract

Nanostructured 4SYSZ (scandia (3.5 mol%) yttria (0.5 mol%) stabilized zirconia) and 5.5 SYSZ (5 mol% scandia and 0.5 mol% yttria) thermal barrier coatings (TBCs) were deposited on nickel-based superalloy using NiCrAlY as the bond coat by plasma spraying process. The thermal shock response of both as-sprayed TBCs was investigated at 1000 °C. Experimental results indicated that the nanostructured 5.5SYSZ TBCs have better thermal shock performance in contrast to 4SYSZ TBCs due to their higher tetragonal phase content and higher fracture toughness of this coating.

Original language	English
Pages (from-to)	11118-11125
Number of pages	8
Journal	Ceramics International
Volume	42
Issue number	9
DOIs	https://doi.org/10.1016/j.ceramint.2016.04.018
Publication status	Published - 1 Jul 2016
Externally published	Yes

Keywords

Atmospheric plasma spraying
Nanostructured thermal barrier coatings
Thermal shock resistance

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.2016.04.018

Cite this

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title = "Effect of scandia content on the thermal shock behavior of SYSZ thermal sprayed barrier coatings",

abstract = "Nanostructured 4SYSZ (scandia (3.5 mol\%) yttria (0.5 mol\%) stabilized zirconia) and 5.5 SYSZ (5 mol\% scandia and 0.5 mol\% yttria) thermal barrier coatings (TBCs) were deposited on nickel-based superalloy using NiCrAlY as the bond coat by plasma spraying process. The thermal shock response of both as-sprayed TBCs was investigated at 1000 °C. Experimental results indicated that the nanostructured 5.5SYSZ TBCs have better thermal shock performance in contrast to 4SYSZ TBCs due to their higher tetragonal phase content and higher fracture toughness of this coating.",

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

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

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

year = "2016",

month = jul,

day = "1",

doi = "10.1016/j.ceramint.2016.04.018",

language = "English",

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pages = "11118--11125",

journal = "Ceramics International",

issn = "0272-8842",

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TY - JOUR

T1 - Effect of scandia content on the thermal shock behavior of SYSZ thermal sprayed barrier coatings

AU - Loghman-Estarki, M. R.

AU - Shoja Razavi, R.

AU - Jamali, H.

AU - Ashiri, R.

PY - 2016/7/1

Y1 - 2016/7/1

N2 - Nanostructured 4SYSZ (scandia (3.5 mol%) yttria (0.5 mol%) stabilized zirconia) and 5.5 SYSZ (5 mol% scandia and 0.5 mol% yttria) thermal barrier coatings (TBCs) were deposited on nickel-based superalloy using NiCrAlY as the bond coat by plasma spraying process. The thermal shock response of both as-sprayed TBCs was investigated at 1000 °C. Experimental results indicated that the nanostructured 5.5SYSZ TBCs have better thermal shock performance in contrast to 4SYSZ TBCs due to their higher tetragonal phase content and higher fracture toughness of this coating.

AB - Nanostructured 4SYSZ (scandia (3.5 mol%) yttria (0.5 mol%) stabilized zirconia) and 5.5 SYSZ (5 mol% scandia and 0.5 mol% yttria) thermal barrier coatings (TBCs) were deposited on nickel-based superalloy using NiCrAlY as the bond coat by plasma spraying process. The thermal shock response of both as-sprayed TBCs was investigated at 1000 °C. Experimental results indicated that the nanostructured 5.5SYSZ TBCs have better thermal shock performance in contrast to 4SYSZ TBCs due to their higher tetragonal phase content and higher fracture toughness of this coating.

KW - Atmospheric plasma spraying

KW - Nanostructured thermal barrier coatings

KW - Thermal shock resistance

UR - https://www.scopus.com/pages/publications/84979486527

U2 - 10.1016/j.ceramint.2016.04.018

DO - 10.1016/j.ceramint.2016.04.018

M3 - Article

AN - SCOPUS:84979486527

SN - 0272-8842

VL - 42

SP - 11118

EP - 11125

JO - Ceramics International

JF - Ceramics International

IS - 9

ER -

Effect of scandia content on the thermal shock behavior of SYSZ thermal sprayed barrier coatings

Abstract

Keywords

ASJC Scopus subject areas

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