Influence of “Island-Like” Oxides in the Bond-Coat on the Stress and Failure Patterns of the Thermal-Barrier Coatings Fabricated by Atmospheric Plasma Spraying During Long-Term High Temperature Oxidation

Wang, L.; Zhao, Yingxue; Zhong, Xinghua; Tao, Shiqian; Zhang, W.; Wang, Y.

doi:10.1007/s11666-013-0008-7

Cited by 29 publications

(6 citation statements)

References 90 publications

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“…Nevertheless, Berthod [210] and Eriksson [211] underline that exposure to temperatures above 1000 • C causes chromia to evaporate due to its volatility, decomposing into CrO 3 . Regarding the deep (internal) oxidation of the BC, Wang et al [212] observed that the presence of oxides within the BC is characterized by the existence of isolated oxidized zones that can have positive effects by reducing the thickening and implicit the stress of TGO, as the formation of oxides is distributed within the BC. Additionally, the oxidized zones decrease the rate of crack propagation.…”

Section: Aluminum Depletionmentioning

confidence: 99%

A Comprehensive Understanding of Thermal Barrier Coatings (TBCs): Applications, Materials, Coating Design and Failure Mechanisms

Bogdan,

Peter

2024

Metals

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This review offers a comprehensive analysis of thermal barrier coatings (TBCs) applied to metallic materials. By reviewing the recent literature, this paper reports on a collection of technical information, involving the structure and role of TBCs, various materials and coating processes, as well as the mechanisms involved in the durability and failure of TBCs. Although TBCs have been successfully utilized in advanced applications for nearly five decades, they continue to be a subject of keen interest and ongoing study in the world of materials science, with overviews of the field’s evolution remaining ever relevant. Thus, this paper outlines the current requirements of the main application areas of TBCs (aerospace, power generation and the automotive and naval industries) and the properties and resistance to thermal, mechanical and chemical stress of the different types of materials used, such as zirconates, niobates, tantalates or mullite. Additionally, recent approaches in the literature, such as high-entropy coatings and multilayer coatings, are presented and discussed. By analyzing the failure processes of TBCs, issues related to delamination, spallation, erosion and oxidation are revealed. Integrating TBCs with the latest generations of superalloys, as well as examining heat transfer mechanisms, could represent key areas for in-depth study.

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Section: Aluminum Depletionmentioning

confidence: 99%

A Comprehensive Understanding of Thermal Barrier Coatings (TBCs): Applications, Materials, Coating Design and Failure Mechanisms

Bogdan,

Peter

2024

Metals

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“…Intrusive oxidation was reported for different MCrAlY projected coatings, with a sensitivity not clearly associated to a deposition process [14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31]. For instance, several authors reported that HVOF MCrAlY coatings were less prone to intrusive oxidation compared to APS (or even low pressure plasma spraying (LPPS)) [20,23,25]. The sensitivity to intrusive oxidation was found to be related to the presence and interconnection of unmelted powder particles.…”

Section: Origin Of Intrusive Oxidationmentioning

confidence: 99%

“…However, these projected coatings are much more prone to internal defects such as unmelted particles, pores, internal oxides and/or nitrides, intersplats. Oxygen ingress along these open channels causes oxide intrusions within the coating [14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31]. This oxide intrusion, concomitant to external oxide scale growth, participates in the Al consumption.…”

Section: Introductionmentioning

confidence: 99%

Size effects on high temperature oxidation of MCrAlY coatings processed via APS and HVOF depositions

Kalush

Texier

Ecochard

et al. 2022

Surface and Coatings Technology

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“…Tolpygo et al [5] observed that the thermal mismatch of 7YSZ coating occurred during the cycling furnace test, and horizontal and interfacial cracks inclined near the TGO layer, resulting in coating failure. In order to study the failure mechanism caused by TGO, Wang et al [12,13,16,62,63] have done a generous of research on crack propagation in previous reports. Including the study of horizontal cracks, vertical cracks, internal cracks, or interfacial cracks in coatings, the results indicated Huang et al [60] considered the effect of interface roughness on strain energy release rate (Strain Energy Release Rate) and surface cracking behavior in APS-TBCs by XFEM.…”

Section: Thermal Expansion Mismatchmentioning

confidence: 99%

“…Tolpygo et al [5] observed that the thermal mismatch of 7YSZ coating occurred during the cycling furnace test, and horizontal and interfacial cracks inclined near the TGO layer, resulting in coating failure. In order to study the failure mechanism caused by TGO, Wang et al [12,13,16,62,63] have done a generous of research on crack propagation in previous reports. Including the study of horizontal cracks, vertical cracks, internal cracks, or interfacial cracks in coatings, the results indicated that the stress concentration is related to the location of vertical and horizontal cracks, as shown in Figure 8, and the crack length also affects the failure of TBCs [5,13,14], especially for the thick thermal barrier coatings (TTBCs) fabricated by APS, vertical cracks (also known as segmentation cracks) are distributed in the top-coat (ceramic layer); usually, the length of segmentation cracks is more than half of the thickness of the coating.…”

Section: Thermal Expansion Mismatchmentioning

confidence: 99%

Research Progress of Failure Mechanism of Thermal Barrier Coatings at High Temperature via Finite Element Method

Liu

Wang

et al. 2020

Coatings

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In the past decades, the durability of thermal barrier coatings (TBCs) has been extensively studied. The majority of researches emphasized the problem of oxidation, corrosion, and erosion induced by foreign object damage (FOD). TBCs with low thermal conductivity are usually coated on the hot-section components of the aircraft engine. The main composition of the TBCs is top-coat, which is usually regarded as a wear-resistant and heat-insulating layer, and it will significantly improve the working temperature of the hot-section components of the aircraft engine. The application of TBCs are serviced under a complex and rigid environment. The external parts of the TBCs are subjected to high-temperature and high-pressure loading, and the inner parts of the TBCs have a large thermal stress due to the different physical properties between the adjacent layers of the TBCs. To improve the heat efficiency of the hot-section components of aircraft engines, the working temperature of the TBCs should be improved further, which will result in the failure mechanism becoming more and more complicated for TBCs; thus, the current study is focusing on reviewing the failure mechanism of the TBCs when they are serviced under the actual high temperature conditions. Finite element simulation is an important method to study the failure mechanism of the TBCs, especially under some extremely rigid environments, which the experimental method cannot realize. In this paper, the research progress of the failure mechanism of TBCs at high temperature via finite element modeling is systematically reviewed.

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Influence of “Island-Like” Oxides in the Bond-Coat on the Stress and Failure Patterns of the Thermal-Barrier Coatings Fabricated by Atmospheric Plasma Spraying During Long-Term High Temperature Oxidation

Cited by 29 publications

References 90 publications

A Comprehensive Understanding of Thermal Barrier Coatings (TBCs): Applications, Materials, Coating Design and Failure Mechanisms

A Comprehensive Understanding of Thermal Barrier Coatings (TBCs): Applications, Materials, Coating Design and Failure Mechanisms

Size effects on high temperature oxidation of MCrAlY coatings processed via APS and HVOF depositions

Research Progress of Failure Mechanism of Thermal Barrier Coatings at High Temperature via Finite Element Method

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