MCrAlY Bondcoats by High-Velocity Atmospheric Plasma Spraying

Mauer, Georg; Sebold, Doris; Vaßen, Robert

doi:10.1007/s11666-013-0026-5

Cited by 20 publications

(13 citation statements)

References 22 publications

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“…Deposition was performed by HV‐APS technique, which is based on an atmospheric plasma spraying with a three cathode TriplexPro TM ‐210 torch (Oerlikon Metco) mounted on a six‐axis robot and controlled by a Multicoat TM facility . The diameter of the high‐speed nozzle is 5 mm, meanwhile the diameter of the powder injector is 1.8 mm with a feeding angle of 90° according to the torch axis (Figure ).…”

Section: Methodssupporting

confidence: 89%

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Cr₂AlC MAX phase as bond coat for thermal barrier coatings: Processing, testing under thermal gradient loading, and future challenges

et al. 2019

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Cr2AlC layers with thickness up to 100 µm were deposited by high‐velocity‐atmospheric plasma spray (HV‐APS) on Inconel 738 substrates to analyze the potential of MAX phases as bond coat in thermal barrier coating systems (TBCs). The deposited Cr2AlC layers showed high purity with theoretical densities up to 93%, although some secondary phases were detected after the deposition process. On top of this MAX phase layer, a porous yttria‐stabilized zirconia (YSZ) was deposited by atmospheric plasma spraying. The system was tested under realistic thermal loading conditions using a burner rig facility, achieving surface and substrate temperatures of 1400°C and 1050°C, respectively. The system failed after 745 cycles mainly for three reasons: (i) open porosity of the bond coat layer, (ii) oxidation of secondary phases, and (iii) inter‐diffusion. Nevertheless, these results show a high potential of Cr2AlC and other Al‐based MAX phases as bond coat material for high‐temperature applications. Furthermore, future challenges to transfer MAX phases as eventual bond coat or protective layer are discussed.

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Section: Methodssupporting

confidence: 89%

“…Another aspect that is important for a bond coat layer is the surface roughness since other material—in this case YSZ—has to be deposited on top. Arithmetic mean roughness (Table ) of 9.5‐9.6 µm were obtained for both coatings, values that are in concordance with the literature for other bond coat materials …”

Section: Resultsmentioning

confidence: 96%

Cr₂AlC MAX phase as bond coat for thermal barrier coatings: Processing, testing under thermal gradient loading, and future challenges

et al. 2019

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“…The development of HV-APS process parameters for MCrAlY bondcoats was published already in a previous work [16]. It is summarized as follows:…”

Section: Process Investigationsmentioning

confidence: 99%

“…In this regard, the recently developed High-Velocity Atmospheric Plasma Spraying (HV-APS) process [16] with the TriplexPro™-210 three-cathode plasma torch [17,18] gives interesting opportunities to such an approach as it features high plasma gas flows and the application of high velocity nozzles with small diameters. This results in low plume temperatures and high particle velocities.…”

Section: Introductionmentioning

confidence: 99%

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Impact of processing conditions and feedstock characteristics on thermally sprayed MCrAlY bondcoat properties

Mauer

Sebold

Vaßen

et al. 2017

Surface and Coatings Technology

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Coatings with Columnar Microstructures for Thermal Barrier Applications

Mauer

Vaßen

2019

Adv Eng Mater

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Columnar-structured thermal barrier coatings (TBCs) manufactured by electron beam-physical vapor deposition (EB-PVD) are well known to exhibit high strain tolerance. However, as EB-PVD is a high-vacuum process, it is expensive. Suspension plasma spraying (SPS) and plasma spray-physical vapor deposition (PS-PVD) are alternatives for the manufacture of similar microstructures. Herein, the state of the art of manufacturing columnar-structured TBCs by SPS and PS-PVD is outlined. Both processes have been investigated and further developed at Forschungszentrum Jülich for many years. The mechanisms leading to the formation of columnar-structured coatings are described and differentiated from EB-PVD. Examples are given for SPS and PS-PVD columnar microstructures and their life performance.

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MCrAlY Bondcoats by High-Velocity Atmospheric Plasma Spraying

Cited by 20 publications

References 22 publications

Cr₂AlC MAX phase as bond coat for thermal barrier coatings: Processing, testing under thermal gradient loading, and future challenges

Cr₂AlC MAX phase as bond coat for thermal barrier coatings: Processing, testing under thermal gradient loading, and future challenges

Impact of processing conditions and feedstock characteristics on thermally sprayed MCrAlY bondcoat properties

Coatings with Columnar Microstructures for Thermal Barrier Applications

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MCrAlY Bondcoats by High-Velocity Atmospheric Plasma Spraying

Cited by 20 publications

References 22 publications

Cr2AlC MAX phase as bond coat for thermal barrier coatings: Processing, testing under thermal gradient loading, and future challenges

Cr2AlC MAX phase as bond coat for thermal barrier coatings: Processing, testing under thermal gradient loading, and future challenges

Impact of processing conditions and feedstock characteristics on thermally sprayed MCrAlY bondcoat properties

Coatings with Columnar Microstructures for Thermal Barrier Applications

Contact Info

Product

Resources

About

Cr₂AlC MAX phase as bond coat for thermal barrier coatings: Processing, testing under thermal gradient loading, and future challenges

Cr₂AlC MAX phase as bond coat for thermal barrier coatings: Processing, testing under thermal gradient loading, and future challenges