Plasma spraying of mullite and pore formers for thermal insulating applications

Fournier, Vincent; Quet, Aurélie; Meillot, E.; Ageorges, Hélène

doi:10.1016/j.surfcoat.2020.126744

Cited by 7 publications

(5 citation statements)

References 45 publications

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“…Wherever relevant, limitations of specific thermal spray variants are highlighted to emphasize the fact that not all thermal spray techniques maybe suited to deposit every material of interest and vice-versa. [17] 4.1 Thermal spray coatings for proton exchange membrane (PEM) electrolysers…”

Section: Thermal Spray Coatings For Electrolysersmentioning

confidence: 99%

“…In some cases, pore-formers are also used to intentionally introduce porosity, particularly in thermal sprayed ceramic coatings. [17] Table 2 seeks to provide a detailed summary of the numerous examples of thermal spray feedstock materials and spraying routes used to manufacture coatings for water-splitting leading to hydrogen production. Details are also condensed in a graphical form in Figure 21 for all the seven electrolyser types that have been reviewed herein.…”

Section: Traditional Feedstock Materials Coating Design and Post-proc...mentioning

confidence: 99%

“…Though there are challenges associated with the application of finer feedstock for thermal spraying, [16,17] over the last decade, there has been desire to consider nano-or sub-micron sized powders as thermal spray feedstock materials. Principally, these nano-or sub-micron sized powders are characterized by poor flowability can be challenging to thermally spray using conventional techniques (e. g., APS, HVOF).…”

Section: Design-to-manufacture Approach In Thermal Spray Coatingsmentioning

confidence: 99%

“…This section presents specific examples of catalysts, transport and corrosion resistant protective layers manufactured using thermal spray coating techniques and characterised for various catalytic and transport characteristics to produce hydrogen through electrolytic routes. Wherever relevant, limitations of specific thermal spray variants are highlighted to emphasize the fact that not all thermal spray techniques maybe suited to deposit every material of interest and vice‐versa [17] …”

Section: Thermal Spray Coatings For Electrolysersmentioning

confidence: 99%

“…In summary, the advantage of thermal spraying methods is that it enables an appropriate combination of powder particle size, their residence time as governed by the gas velocity, and the process temperature to generate coatings with a desired level of porosity, depending on the type of coating material, parameters of the spraying process and the spraying gun system. In some cases, pore‐formers are also used to intentionally introduce porosity, particularly in thermal sprayed ceramic coatings [17] …”

Section: Considerations For Enhanced Hydrogen Productionmentioning

confidence: 99%

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Application of Thermal Spray Coatings in Electrolysers for Hydrogen Production: Advances, Challenges, and Opportunities

et al. 2022

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Thermal spray coatings have the advantage of providing thick and functional coatings from a range of engineering materials. The associated coating processes provide good control of coating thickness, morphology, microstructure, pore size and porosity, and residual strain in the coatings through selection of suitable process parameters for any coating material of interest. This review consolidates scarce literature on thermally sprayed components which are critical and vital constituents (e.g., catalysts (anode/cathode), solid electrolyte, and transport layer, including corrosion-prone parts such as bipolar plates) of the water splitting electrolysis process for hydrogen production. The research shows that there is a gap in thermally sprayed feedstock material selection strategy as well as in addressing modelling needs that can be crucial to advancing applications exploiting their catalytic and corrosion-resistant properties to split water for hydrogen production. Due to readily scalable production enabled by thermal spray techniques, this manufacturing route bears potential to dominate the sustainable electrolyser technologies in the future. While the well-established thermal spray coating variants may have certain limitations in the manner they are currently practiced, deployment of both conventional and novel thermal spray approaches (suspension, solution, hybrid) is clearly promising for targeted development of electrolysers.

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Section: Thermal Spray Coatings For Electrolysersmentioning

confidence: 99%

Section: Traditional Feedstock Materials Coating Design and Post-proc...mentioning

confidence: 99%

Section: Design-to-manufacture Approach In Thermal Spray Coatingsmentioning

confidence: 99%

Section: Thermal Spray Coatings For Electrolysersmentioning

confidence: 99%

Section: Considerations For Enhanced Hydrogen Productionmentioning

confidence: 99%

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Application of Thermal Spray Coatings in Electrolysers for Hydrogen Production: Advances, Challenges, and Opportunities

et al. 2022

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On the formation of porosity in hydroxyapatite/polyester high-velocity oxygen-fuel sprayed coatings and their electrochemical behavior in simulated body fluid

Toledo,

Henao,

Poblano-Salas

et al. 2023

Appl. Phys. A

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A Perspective on Thermally Sprayed Thermal Barrier Coatings: Current Status and Trends

et al. 2022

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For more than 6 decades, thermal barrier coatings have been used to protect structural parts in both stationary and aviation gas turbines. These coatings allow the use of significant higher operation temperatures and hence increased efficiencies. In the 1970s, yttria-stabilized zirconia (YSZ) was identified as outstanding material for this application. As major deposition technologies both electron beam physical vapor deposition (EB-PVD) and atmospheric plasma spraying (APS) have been established. Although the topic is already rather old, there are still frequent activities ongoing to further improve the technology, both with respect to materials and microstructural issues also regarding the use of advanced coating technologies, especially in the field of thermal spray. The paper tries to summarize major developments in both fields, the materials and the processing focusing on thermal spray methods. The impact of both materials and processing are summarized by the results of burner rig tests for various systems. Furthermore, a short outlook on possible future directions of developments will be given.

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Plasma spraying of mullite and pore formers for thermal insulating applications

Cited by 7 publications

References 45 publications

Application of Thermal Spray Coatings in Electrolysers for Hydrogen Production: Advances, Challenges, and Opportunities

Application of Thermal Spray Coatings in Electrolysers for Hydrogen Production: Advances, Challenges, and Opportunities

On the formation of porosity in hydroxyapatite/polyester high-velocity oxygen-fuel sprayed coatings and their electrochemical behavior in simulated body fluid

A Perspective on Thermally Sprayed Thermal Barrier Coatings: Current Status and Trends

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