Architecture of thermal barrier coatings produced by electron beam-physical vapor deposition (EB-PVD)

Research output: Contribution to journalArticle

44 Citations (Scopus)

Abstract

Extremely high temperatures and severe atmospheric conditions in the hot section of aircraft engines during operation result in degradation and structural failures of turbine components. Replacing these components is very expensive. Thermal barrier coatings (TBC) composed to ZrO2-8wt%Y2O3(8YSZ) applied by Electron Beam-Physical Vapor Deposition (EB-PVD) to turbine components offer excellent properties for thermal protection and resistance against oxidation - induced erosion and corrosion. However, the life of turbine components is still limited due to premature failure of the TBC. It is hypothesized that the life of the coated components can be extended by lowering the thermal conductivity of the TBC by creating multiple non-distinct or distinct interfaces and alloy additions such as Nb-oxide which will result in a reduction in the thermal conductivity and oxygen transport through the coating. This paper presents the microstructural results of standard 8YSZ, layered 8YSZ, Nb-oxide alloyed 8YSZ and functionally graded 8YSZ with Nb-oxide deposited by EB-PVD. TBC samples were examined by various methods including scanning electron microscopy (SEM), high-resolution optical microscopy (OM), X-ray diffraction (XRD), and thermal cycling tests. The preliminary results strongly suggest that multiple interfaced TBC exhibits better oxidation resistant properties as compared to standard and alloyed TBC.

Original languageEnglish (US)
Pages (from-to)3261-3267
Number of pages7
JournalJournal of Materials Science
Volume37
Issue number15
DOIs
StatePublished - Aug 1 2002

Fingerprint

Thermal barrier coatings
Physical vapor deposition
Electron beams
Turbine components
Oxides
Thermal conductivity
Aircraft engines
Oxidation resistance
Thermal cycling
Optical microscopy
Erosion
Corrosion
Oxygen
X ray diffraction
Degradation
Coatings
Oxidation
Scanning electron microscopy

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

@article{c756e30529224536aa81057e772cdd4f,
title = "Architecture of thermal barrier coatings produced by electron beam-physical vapor deposition (EB-PVD)",
abstract = "Extremely high temperatures and severe atmospheric conditions in the hot section of aircraft engines during operation result in degradation and structural failures of turbine components. Replacing these components is very expensive. Thermal barrier coatings (TBC) composed to ZrO2-8wt{\%}Y2O3(8YSZ) applied by Electron Beam-Physical Vapor Deposition (EB-PVD) to turbine components offer excellent properties for thermal protection and resistance against oxidation - induced erosion and corrosion. However, the life of turbine components is still limited due to premature failure of the TBC. It is hypothesized that the life of the coated components can be extended by lowering the thermal conductivity of the TBC by creating multiple non-distinct or distinct interfaces and alloy additions such as Nb-oxide which will result in a reduction in the thermal conductivity and oxygen transport through the coating. This paper presents the microstructural results of standard 8YSZ, layered 8YSZ, Nb-oxide alloyed 8YSZ and functionally graded 8YSZ with Nb-oxide deposited by EB-PVD. TBC samples were examined by various methods including scanning electron microscopy (SEM), high-resolution optical microscopy (OM), X-ray diffraction (XRD), and thermal cycling tests. The preliminary results strongly suggest that multiple interfaced TBC exhibits better oxidation resistant properties as compared to standard and alloyed TBC.",
author = "Jogender Singh and Wolfe, {Douglas Edward} and Jason Singh",
year = "2002",
month = "8",
day = "1",
doi = "10.1023/A:1016187101616",
language = "English (US)",
volume = "37",
pages = "3261--3267",
journal = "Journal of Materials Science",
issn = "0022-2461",
publisher = "Springer Netherlands",
number = "15",

}

Architecture of thermal barrier coatings produced by electron beam-physical vapor deposition (EB-PVD). / Singh, Jogender; Wolfe, Douglas Edward; Singh, Jason.

In: Journal of Materials Science, Vol. 37, No. 15, 01.08.2002, p. 3261-3267.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Architecture of thermal barrier coatings produced by electron beam-physical vapor deposition (EB-PVD)

AU - Singh, Jogender

AU - Wolfe, Douglas Edward

AU - Singh, Jason

PY - 2002/8/1

Y1 - 2002/8/1

N2 - Extremely high temperatures and severe atmospheric conditions in the hot section of aircraft engines during operation result in degradation and structural failures of turbine components. Replacing these components is very expensive. Thermal barrier coatings (TBC) composed to ZrO2-8wt%Y2O3(8YSZ) applied by Electron Beam-Physical Vapor Deposition (EB-PVD) to turbine components offer excellent properties for thermal protection and resistance against oxidation - induced erosion and corrosion. However, the life of turbine components is still limited due to premature failure of the TBC. It is hypothesized that the life of the coated components can be extended by lowering the thermal conductivity of the TBC by creating multiple non-distinct or distinct interfaces and alloy additions such as Nb-oxide which will result in a reduction in the thermal conductivity and oxygen transport through the coating. This paper presents the microstructural results of standard 8YSZ, layered 8YSZ, Nb-oxide alloyed 8YSZ and functionally graded 8YSZ with Nb-oxide deposited by EB-PVD. TBC samples were examined by various methods including scanning electron microscopy (SEM), high-resolution optical microscopy (OM), X-ray diffraction (XRD), and thermal cycling tests. The preliminary results strongly suggest that multiple interfaced TBC exhibits better oxidation resistant properties as compared to standard and alloyed TBC.

AB - Extremely high temperatures and severe atmospheric conditions in the hot section of aircraft engines during operation result in degradation and structural failures of turbine components. Replacing these components is very expensive. Thermal barrier coatings (TBC) composed to ZrO2-8wt%Y2O3(8YSZ) applied by Electron Beam-Physical Vapor Deposition (EB-PVD) to turbine components offer excellent properties for thermal protection and resistance against oxidation - induced erosion and corrosion. However, the life of turbine components is still limited due to premature failure of the TBC. It is hypothesized that the life of the coated components can be extended by lowering the thermal conductivity of the TBC by creating multiple non-distinct or distinct interfaces and alloy additions such as Nb-oxide which will result in a reduction in the thermal conductivity and oxygen transport through the coating. This paper presents the microstructural results of standard 8YSZ, layered 8YSZ, Nb-oxide alloyed 8YSZ and functionally graded 8YSZ with Nb-oxide deposited by EB-PVD. TBC samples were examined by various methods including scanning electron microscopy (SEM), high-resolution optical microscopy (OM), X-ray diffraction (XRD), and thermal cycling tests. The preliminary results strongly suggest that multiple interfaced TBC exhibits better oxidation resistant properties as compared to standard and alloyed TBC.

UR - http://www.scopus.com/inward/record.url?scp=0036685616&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036685616&partnerID=8YFLogxK

U2 - 10.1023/A:1016187101616

DO - 10.1023/A:1016187101616

M3 - Article

VL - 37

SP - 3261

EP - 3267

JO - Journal of Materials Science

JF - Journal of Materials Science

SN - 0022-2461

IS - 15

ER -