Driving forces in thermal barrier coatings blistering

Mahfouz, Lara; Marchand, Basile; Guipont, Vincent; Coudon, Florent; Maurel, Vincent

doi:10.1016/j.mtla.2023.101728

Cited by 7 publications

(3 citation statements)

References 42 publications

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“…Named the laser shock adhesion test (LASAT), a laser generates shock waves at the substrate or coating surface, and the resulting vibrations can result in delamination at the coating/ substrate interface. Although LASAT is currently a rare method for assessing the interfacial properties of TBC or EBCs, its ability to rank different coatings in terms of adhesion, and to evaluate the evolution of adhesion over time with thermal exposure (such as thermal cycling or aging), suggests it has potential for future adoption (Guipont et al, 2019;Maurel et al, 2019;Mahfouz et al, 2023).…”

Section: Tensile Pull-off and Buckle Methodsmentioning

confidence: 99%

Characterisation techniques for investigating TBC and EBC failure: a review

Scotson,

Paksoy,

Xiao

2024

Front. Ceram.

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Materials characterisation plays a crucial role in developing thermal barrier coatings and environmental barrier coatings for gas-turbine engines. The failure of thermal barrier coatings and environmental barrier coatings is influenced by a complex interdependence of microstructure, residual stress, and thermomechanical properties. Validating our mechanistic understanding of each of these factors that contribute to failure requires a selection of suitable characterisation techniques. Presented in this review are characterisation techniques, both ex situ and in situ, that have advanced the understanding of thermal barrier coating and environmental barrier coating failure. Targeted coating development that is both effective and efficient depends on these characterisation techniques to obtain superior coatings with improved performance and lifetime.

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Section: Tensile Pull-off and Buckle Methodsmentioning

confidence: 99%

Characterisation techniques for investigating TBC and EBC failure: a review

Scotson,

Paksoy,

Xiao

2024

Front. Ceram.

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“…Rumpling occurs in the case of BCs made from MCrAlY and particularly in the case of aluminides of Ni and Pt (Ni,Pt)Al, with the observation that for the latter ones, there is a significant increase in TGO roughness due to excessive oxidation. This could lead to the detachment of the TC from the TGO [254]. The negative effects of rumpling are manifested by the appearance and propagation of cracks due to internal tensile stress at the peaks and compressive stress in the low areas, layer delamination and spallation [251,254,255].…”

Section: Creep and Rumplingmentioning

confidence: 99%

“…This could lead to the detachment of the TC from the TGO [254]. The negative effects of rumpling are manifested by the appearance and propagation of cracks due to internal tensile stress at the peaks and compressive stress in the low areas, layer delamination and spallation [251,254,255]. The occurrence of rumpling depends especially on the heating cycle history, temperature intervals and the type and thickness of the TBC [255].…”

Section: Creep and Rumplingmentioning

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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Bond-associated non-ordinary state-based peridynamics for simulating damage evolution of thermal barrier coatings in aero-engine turbine blades

Wu,

Qi,

et al. 2024

Engineering Fracture Mechanics

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Driving forces in thermal barrier coatings blistering

Cited by 7 publications

References 42 publications

Characterisation techniques for investigating TBC and EBC failure: a review

Characterisation techniques for investigating TBC and EBC failure: a review

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

Bond-associated non-ordinary state-based peridynamics for simulating damage evolution of thermal barrier coatings in aero-engine turbine blades

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