Residual Stresses in PVD/Plasma Sprayed Thermal Barrier Multilayered Coatings at High Temperature

Teixeira, V.; Andritschky, M.; Fischer, Werner; Stöver, D.

doi:10.1007/978-94-007-0868-6_28

Cited by 2 publications

(2 citation statements)

References 12 publications

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“…Zhu et al (Ref 210) showed that Raman spectroscopy can be used to determine the stresses present in chromia scales formed at 900 and 1000°C on NiCoCrAlY. The residual stresses within the chromia layer that were obtained (-1680 MPa by micro-Raman spectroscopy and -2060 MPa by XRD analysis) are in good agreement with the numerical modeling results (* -1800 MPa) ( Ref 216,217).…”

Section: Fourier-transform Infrared (Ftir) Spectroscopysupporting

confidence: 57%

Advances in Corrosion-Resistant Thermal Spray Coatings for Renewable Energy Power Plants: Part II—Effect of Environment and Outlook

2019

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High-temperature corrosion of critical components such as water walls and superheater tubes in biomass/ waste-fired boilers is a major challenge. A dense and defect-free thermal spray coating has been shown to be promising to achieve a high electrical/thermal efficiency in power plants. The field of thermal spraying and quality of coatings have been progressively evolving; therefore, a critical assessment of our understanding of the efficacy of coatings in increasingly aggressive operating environments of the power plants can be highly educative. The effects of composition and microstructure on high-temperature corrosion behavior of the coatings were discussed in the first part of the review. The present paper that is the second part of the review covers the emerging research field of performance assessment of thermal spray coatings in harsh corrosion-prone environments and provides a comprehensive overview of the underlying high-temperature corrosion mechanisms that lead to the damage of exposed coatings. The application of contemporary analytical methods for better understanding of the behavior of corrosion-resistant coatings is also discussed. A discussion based on an exhaustive review of the literature provides an unbiased commentary on the advanced accomplishments and some outstanding issues in the field that warrant further research. An assessment of the current status of the field, the gaps in the scientific understanding, and the research needs for the expansion of thermal spray coatings for high-temperature corrosion applications is also provided.

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Section: Fourier-transform Infrared (Ftir) Spectroscopysupporting

confidence: 57%

Advances in Corrosion-Resistant Thermal Spray Coatings for Renewable Energy Power Plants: Part II—Effect of Environment and Outlook

2019

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“…It is possible to get a layer with a few micron thicknesses, which is still dense. The complex coating process is described in detail by Teixera et al and by Yang, Eastman, Soyez et al [33][34][35][36] In Fig. 12-14, PVD and MOCVD coatings of YSZ or La 2 Zr 2 O 7 are shown after a heat treatment in a burner rig.…”

Section: New Concept: Nanocrystalline Layermentioning

confidence: 99%

New material concepts for the next generation of plasma-sprayed thermal barrier coatings

et al. 2004

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In application as a thermal barrier coating (TBC), partially stabilized zirconia (Zr) approaches some limits of performance. To further enhance the efficiency of gas turbines, higher temperature capability and a longer lifetime of the coating are needed for the next generation of TBCs. This paper presents the development of new materials and concepts for application as TBC. Materials whose compositions have the pyrochlore structure or doped Zr are presented in contrast with new concepts like nanolayers between the top and bond coat, metal-glass composites, and double-layer structures. In the last concept, the new compositions are used in a combination with Zr, as a double, multi, or graded layer coating. In this case, the benefits of Zr will be combined with the promising properties of the new top coating. In the case of metal-glass composites, the paper will be focused on the influences of different plasma spraying processes on the microstructure. The performance of all these different coating systems has been evaluated by burner rig tests. The results will be presented and discussed.

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Residual Stresses in PVD/Plasma Sprayed Thermal Barrier Multilayered Coatings at High Temperature

Cited by 2 publications

References 12 publications

Advances in Corrosion-Resistant Thermal Spray Coatings for Renewable Energy Power Plants: Part II—Effect of Environment and Outlook

Advances in Corrosion-Resistant Thermal Spray Coatings for Renewable Energy Power Plants: Part II—Effect of Environment and Outlook

New material concepts for the next generation of plasma-sprayed thermal barrier coatings

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