Life time of new SYSZ thermal barrier coatings produced by plasma spraying method under thermal shock test and high temperature treatment

Mohammad Reza Loghman-Estarki; Reza Shoja Razavi; Hossein Edris; Mousa Pourbafrany; Hossein Jamali; Reza Ghasemi

doi:10.1016/j.ceramint.2013.07.023

Life time of new SYSZ thermal barrier coatings produced by plasma spraying method under thermal shock test and high temperature treatment

Mohammad Reza Loghman-Estarki
, Reza Shoja Razavi
, Hossein Edris
, Mousa Pourbafrany
, Hossein Jamali
, Reza Ghasemi

Research output: Journal Publication › Article › peer-review

100 Citations (Scopus)

Abstract

Nanostructured scandia (4.6 mol%), yttria (0.4 mol%) doped zirconia (5SYSZ) and 7 wt% yttria stabilized zirconia (7YSZ) thermal barrier coatings (TBCs) were produced by plasma spraying on nickel-based superalloy substrates with NiCrAlY as the bond coat. The thermal shock behavior of the two as-sprayed TBCs at 1000 C was investigated. The results indicated that the thermal cycling lifetime of 7YSZ TBCs was longer than the 5SYSZ TBCs due to the lower thermal mismatch stress between the ceramic layer and the metallic layer at high temperature. However, the nanostructured 5SYSZ coating had higher thermal stability than 7YSZ TBC.

Original language	English
Pages (from-to)	1405-1414
Number of pages	10
Journal	Ceramics International
Volume	40
Issue number	1 PART B
DOIs	https://doi.org/10.1016/j.ceramint.2013.07.023
Publication status	Published - Jan 2014
Externally published	Yes

Free Keywords

Atmospheric plasma spraying
C. Thermal shock resistance
Durability of TBCs under thermal cycling
Nanostructured thermal barrier coatings

ASJC Scopus subject areas

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

Access to Document

10.1016/j.ceramint.2013.07.023

Cite this

@article{896132411a464307b5fbb1127a566f61,

title = "Life time of new SYSZ thermal barrier coatings produced by plasma spraying method under thermal shock test and high temperature treatment",

abstract = "Nanostructured scandia (4.6 mol\%), yttria (0.4 mol\%) doped zirconia (5SYSZ) and 7 wt\% yttria stabilized zirconia (7YSZ) thermal barrier coatings (TBCs) were produced by plasma spraying on nickel-based superalloy substrates with NiCrAlY as the bond coat. The thermal shock behavior of the two as-sprayed TBCs at 1000 C was investigated. The results indicated that the thermal cycling lifetime of 7YSZ TBCs was longer than the 5SYSZ TBCs due to the lower thermal mismatch stress between the ceramic layer and the metallic layer at high temperature. However, the nanostructured 5SYSZ coating had higher thermal stability than 7YSZ TBC.",

keywords = "Atmospheric plasma spraying, C. Thermal shock resistance, Durability of TBCs under thermal cycling, Nanostructured thermal barrier coatings",

author = "Loghman-Estarki, \{Mohammad Reza\} and \{Shoja Razavi\}, Reza and Hossein Edris and Mousa Pourbafrany and Hossein Jamali and Reza Ghasemi",

year = "2014",

month = jan,

doi = "10.1016/j.ceramint.2013.07.023",

language = "English",

volume = "40",

pages = "1405--1414",

journal = "Ceramics International",

issn = "0272-8842",

publisher = "Elsevier Ltd.",

number = "1 PART B",

}

TY - JOUR

T1 - Life time of new SYSZ thermal barrier coatings produced by plasma spraying method under thermal shock test and high temperature treatment

AU - Loghman-Estarki, Mohammad Reza

AU - Shoja Razavi, Reza

AU - Edris, Hossein

AU - Pourbafrany, Mousa

AU - Jamali, Hossein

AU - Ghasemi, Reza

PY - 2014/1

Y1 - 2014/1

N2 - Nanostructured scandia (4.6 mol%), yttria (0.4 mol%) doped zirconia (5SYSZ) and 7 wt% yttria stabilized zirconia (7YSZ) thermal barrier coatings (TBCs) were produced by plasma spraying on nickel-based superalloy substrates with NiCrAlY as the bond coat. The thermal shock behavior of the two as-sprayed TBCs at 1000 C was investigated. The results indicated that the thermal cycling lifetime of 7YSZ TBCs was longer than the 5SYSZ TBCs due to the lower thermal mismatch stress between the ceramic layer and the metallic layer at high temperature. However, the nanostructured 5SYSZ coating had higher thermal stability than 7YSZ TBC.

AB - Nanostructured scandia (4.6 mol%), yttria (0.4 mol%) doped zirconia (5SYSZ) and 7 wt% yttria stabilized zirconia (7YSZ) thermal barrier coatings (TBCs) were produced by plasma spraying on nickel-based superalloy substrates with NiCrAlY as the bond coat. The thermal shock behavior of the two as-sprayed TBCs at 1000 C was investigated. The results indicated that the thermal cycling lifetime of 7YSZ TBCs was longer than the 5SYSZ TBCs due to the lower thermal mismatch stress between the ceramic layer and the metallic layer at high temperature. However, the nanostructured 5SYSZ coating had higher thermal stability than 7YSZ TBC.

KW - Atmospheric plasma spraying

KW - C. Thermal shock resistance

KW - Durability of TBCs under thermal cycling

KW - Nanostructured thermal barrier coatings

UR - https://www.scopus.com/pages/publications/84888003135

U2 - 10.1016/j.ceramint.2013.07.023

DO - 10.1016/j.ceramint.2013.07.023

M3 - Article

AN - SCOPUS:84888003135

SN - 0272-8842

VL - 40

SP - 1405

EP - 1414

JO - Ceramics International

JF - Ceramics International

IS - 1 PART B

ER -

Life time of new SYSZ thermal barrier coatings produced by plasma spraying method under thermal shock test and high temperature treatment

Abstract

Free Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this