Peridynamic-based investigation of the cracking behavior of multilayer thermal barrier coatings

Wang, Han; Dong, Han; Cai, Zhenwei; Li, Yuhang; Wang, Weizhe; Liu, Yingzheng

doi:10.1016/j.ceramint.2022.05.002

Cited by 18 publications

(2 citation statements)

References 43 publications

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“…[8][9][10] During cooling of TBCs, the molten CMAS solidifies in cracks and pores, leading to microstructure degradation and phase transformation of the coating, which can exacerbate the stress concentration around the pores and microcracks filled by CMAS. 11,12 The cracks formed due to such stress concentration in TBCs will expand and converge, leading to thermal barrier failure of TBCs. 13,14 Therefore, the characterization of stress in TBCs during CMAS corrosion is of great significance to explore the failure mechanism for TBCs.…”

Section: Introductionmentioning

confidence: 99%

“…CMAS particles can infiltrate and dissolve a TBC due to their superior wetting ability when the surface temperature of the TBC exceeds the melting point of CMAS 8–10 . During cooling of TBCs, the molten CMAS solidifies in cracks and pores, leading to microstructure degradation and phase transformation of the coating, which can exacerbate the stress concentration around the pores and microcracks filled by CMAS 11,12 . The cracks formed due to such stress concentration in TBCs will expand and converge, leading to thermal barrier failure of TBCs 13,14 …”

Section: Introductionmentioning

confidence: 99%

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Characterization of stress in a thermal barrier coating during CMAS corrosion using Ce³⁺ photoluminescence spectroscopy

et al. 2023

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The stress caused by calcium–magnesium–alumino–silicate (CMAS) corrosion is a critical factor in thermal barrier failure of thermal barrier coatings (TBCs). For the service safety of TBCs, it is important to characterize the stress inside TBCs during CMAS corrosion using a nondestructive and accurate method. In this study, photoluminescence spectroscopy technology was applied to characterize the stress in TBCs during CMAS corrosion. First, TBC specimens containing yttrium–aluminum–garnet doped with trace Ce3+ ions (YAG:Ce3+)/yttrium oxide partially stabilized zirconia double‐ceramic‐layer were prepared by atmospheric plasma spraying. Then, CMAS corrosion experiments were performed using the TBC specimens, and a mechanical model was derived based on Ce3+ photoluminescence spectroscopy to investigate the stress in the TBCs. Finally, the microstructure, extent of CMAS corrosion and stress field in TBC specimens, was characterized. The results reveal that the penetration of CMAS leads to local stress concentration and a nonlinear stress distribution from the outside surface to the inside of the YAG:Ce3+ layer. In addition, an increase in corrosion time, temperature, and CMAS concentration can significantly influence the evolution of the stress field in TBCs.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Characterization of stress in a thermal barrier coating during CMAS corrosion using Ce³⁺ photoluminescence spectroscopy

et al. 2023

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Microcrack Morphology in the Thermal Insulation Performance of 8YSZ Thermal Barrier Coatings: A Mesoscale Numerical Study

et al. 2023

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Cross-scale modeling and elasto-plastic mechanical properties of TBC with 3D hill-like interface

Bao,

Ai,

Guan

et al. 2024

Ceramics International

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Peridynamic-based investigation of the cracking behavior of multilayer thermal barrier coatings

Cited by 18 publications

References 43 publications

Characterization of stress in a thermal barrier coating during CMAS corrosion using Ce³⁺ photoluminescence spectroscopy

Characterization of stress in a thermal barrier coating during CMAS corrosion using Ce³⁺ photoluminescence spectroscopy

Microcrack Morphology in the Thermal Insulation Performance of 8YSZ Thermal Barrier Coatings: A Mesoscale Numerical Study

Cross-scale modeling and elasto-plastic mechanical properties of TBC with 3D hill-like interface

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Peridynamic-based investigation of the cracking behavior of multilayer thermal barrier coatings

Cited by 18 publications

References 43 publications

Characterization of stress in a thermal barrier coating during CMAS corrosion using Ce3+ photoluminescence spectroscopy

Characterization of stress in a thermal barrier coating during CMAS corrosion using Ce3+ photoluminescence spectroscopy

Microcrack Morphology in the Thermal Insulation Performance of 8YSZ Thermal Barrier Coatings: A Mesoscale Numerical Study

Cross-scale modeling and elasto-plastic mechanical properties of TBC with 3D hill-like interface

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Characterization of stress in a thermal barrier coating during CMAS corrosion using Ce³⁺ photoluminescence spectroscopy

Characterization of stress in a thermal barrier coating during CMAS corrosion using Ce³⁺ photoluminescence spectroscopy