Model on thermal conductivity prediction of quasi-columnar structured coating by plasma spray physical vapor deposition

Qiu, Shi-Yi; Shi, Jiancheng; Li, Shan; Wu, Chung‐Chih; Huang, Chenguang; Ma, Yue; Guo, Hongjian

doi:10.1016/j.ceramint.2021.06.164

Cited by 8 publications

(8 citation statements)

References 31 publications

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“…The results of thermal conductivity of the synthetized coating (Figure 6) were much lower in comparison with yttria-stabilized zirconia oxide obtained using the PS-PVD process [40]. A similar value was measured for previously developed Gd 2 Zr 2 O 7 coatings [34,40].…”

Section: Discussionsupporting

confidence: 73%

“…The highest thermal diffusivity was measured for the coating obtained using the power current 2200 A. The results of thermal conductivity of the synthetized coating (Figure 6) were much lower in comparison with yttria-stabilized zirconia oxide obtained using the PS-PVD process [40]. A similar value was measured for previously developed Gd2Zr2O7 coatings [34,40].…”

Section: Thermal Propertiessupporting

confidence: 69%

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The Influence of Reactive PS-PVD Process Parameters on the Microstructure and Thermal Properties of Yb2Zr2O7 Thermal Barrier Coating

et al. 2022

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Ytterbium zirconate (Yb2Zr2O7) is one of the most promising materials for yttria-stabilized zirconia (YSZ) replacement as a thermal barrier coating (TBCs) application. In the presented report, the experimental synthesis of Yb2Zr2O7 coating using novel Reactive Plasma Spray Physical Vapor Deposition (Reactive PS-PVD) is described. The obtained coating, irrespective of the power current (1800, 2000 and 2200 A), was characterized by a hybrid structure and a thickness of about 80–110 μm. The results of XRD phase analysis showed the formation of ytterbium zirconate in the coating but the presence of ytterbium and zirconium oxides was also detected. The oxides were not observed in calcinated powder. The decrease in thermal conductivity with power current increase was observed. It was the result of higher thickness and better columnar structure of the coating obtained using higher power current of the plasma torch.

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Section: Discussionsupporting

confidence: 73%

Section: Thermal Propertiessupporting

confidence: 69%

The Influence of Reactive PS-PVD Process Parameters on the Microstructure and Thermal Properties of Yb2Zr2O7 Thermal Barrier Coating

et al. 2022

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“…Thus, the interface between the small columns may enhance the thermal insulation of the coating [172]. Qiu et al [173] prepared quasi-columnar-structured YSZ and GZO coatings by PS-PVD and developed a three-dimensional, quasi-columnar-structured coating model. The coating exhibited a typical quasi-columnar structure, where the columns are composed of many small island-like columns stacked on top of each other.…”

Section: Figure 25mentioning

confidence: 99%

“…Therefore, improving erosion resistance is the key to the future development of PS-PVD-TBCs. (c,d) voids and interfaces between small columns of the YSZ coating (e) fractured cross-section of the GZO coating (f) polished cross-section of the GZO coating (g,h) voids and interfaces between small columns of the GZO coating [173]. (c,d) voids and interfaces between small columns of the YSZ coating (e) fractured cross-section of the GZO coating (f) polished cross-section of the GZO coating (g,h) voids and interfaces between small columns of the GZO coating [173].…”

Section: Figure 25mentioning

confidence: 99%

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Multi-Scale Structural Design and Advanced Materials for Thermal Barrier Coatings with High Thermal Insulation: A Review

et al. 2023

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Thermal barrier coatings (TBCs) are a fundamental technology used in high-temperature applications to protect superalloy substrate components. However, extreme high-temperature environments present many challenges for TBCs, such as the degradation of their thermal and mechanical properties. Hence, highly insulating, long-life TBCs must be developed to meet higher industrial efficiency. This paper reviews the main factors influencing the thermal insulation performance of TBCs, such as material, coating thickness, and structure. The heat transfer mechanism of the coating is summarized, and the degradation mechanism of the thermal insulation is analyzed from the perspective of the coating structure. Finally, the recent advances in improving the thermal insulation and lifetime of coatings are reviewed in terms of advanced materials and structural design, which will benefit advanced TBCs in future engineering applications and provide guidance for the next generation of high thermal insulating TBCs.

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Treelike PS-PVD coating: Hierarchical branching by shading and sintering

Huang,

Liu,

Yang

et al. 2024

Acta Materialia

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Model on thermal conductivity prediction of quasi-columnar structured coating by plasma spray physical vapor deposition

Cited by 8 publications

References 31 publications

The Influence of Reactive PS-PVD Process Parameters on the Microstructure and Thermal Properties of Yb2Zr2O7 Thermal Barrier Coating

The Influence of Reactive PS-PVD Process Parameters on the Microstructure and Thermal Properties of Yb2Zr2O7 Thermal Barrier Coating

Multi-Scale Structural Design and Advanced Materials for Thermal Barrier Coatings with High Thermal Insulation: A Review

Treelike PS-PVD coating: Hierarchical branching by shading and sintering

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