Thermal spray coatings for molten carbonate fuel cells separator plates

Agüero, Alina; Blas, F.; García, M.; Muelas, R.; Roman, Ana-Maria

doi:10.1016/s0257-8972(01)01435-9

Cited by 28 publications

(11 citation statements)

References 13 publications

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“…These salts are deposited on the surfaces in a molten state due to the high operating temperatures (above the melting point of the salts); in an oxidation environment, they react with the metals and trigger the corrosive attack, leading to the dissolution of the native protective oxide and then promoting the transport of the oxidizing species inside the metallic part. Aguero et al [89] tested the corrosion resistance of Al-Co-Fe-Cr (57-18-13-11 wt%), Ni-Al (80-20 wt%), and Fe-Cr-Al (60-30-5) deposited by atmospheric plasma spray and HVOF, in molten carbonate (Li 2 CO 3 + K 2 CO 3 ) at 700 • C. The authors observed that Cr-rich ferrous plasma spray coatings performed well as protective layers, remaining stable even after long exposure (1000 h) with no significant alteration of the starting composition and avoiding the substrate to be attacked by the corrosive agent. The improved corrosion resistance was ascribed to the iron-aluminide (FeAl) compounds and aluminum oxide scales formed in the coating during the deposition.…”

Section: Corrosion Resistant Coatings In Tes Systemmentioning

confidence: 99%

“…First experimentations on the use of thermal spray coatings as a protective layer were directed toward the development of thermal barrier coating (TBC) in power generation components, namely cell fuels, incinerators, fossil boilers [85,89,90], or high-temperature steam tanks [91,92]. Other applications of these coatings may be anti-corrosion barriers for aeronautical gas turbines [93][94][95] and high-power diesel engines [96].…”

Section: Corrosion Resistant Coatings In Tes Systemmentioning

confidence: 99%

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Thermal Spray Processes in Concentrating Solar Power Technology

Rubino

Poza

Pasquino

et al. 2021

Metals

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Solar power is a sustainable and affordable source of energy, and has gained interest from academies, companies, and government institutions as a potential and efficient alternative for next-generation energy production. To promote the penetration of solar power in the energy market, solar-generated electricity needs to be cost-competitive with fossil fuels and other renewables. Development of new materials for solar absorbers able to collect a higher fraction of solar radiation and work at higher temperatures, together with improved design of thermal energy storage systems and components, have been addressed as strategies for increasing the efficiency of solar power plants, offering dispatchable energy and adapting the electricity production to the curve demand. Manufacturing of concentrating solar power components greatly affects their performance and durability and, thus, the global efficiency of solar power plants. The development of viable, sustainable, and efficient manufacturing procedures and processes became key aspects within the breakthrough strategies of solar power technologies. This paper provides an outlook on the application of thermal spray processes to produce selective solar absorbing coatings in solar tower receivers and high-temperature protective barriers as strategies to mitigate the corrosion of concentrating solar power and thermal energy storage components when exposed to aggressive media during service life.

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Section: Corrosion Resistant Coatings In Tes Systemmentioning

confidence: 99%

Section: Corrosion Resistant Coatings In Tes Systemmentioning

confidence: 99%

Thermal Spray Processes in Concentrating Solar Power Technology

Rubino

Poza

Pasquino

et al. 2021

Metals

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“…The quasi-crystalline AlCoFeCr as well as FeCrAl exhibited excellent behavior against the molten carbonate. In particular, FeCrAl deposited by HVOF remained unchanged after 1000 h of exposure [20].…”

Section: Introductionmentioning

confidence: 95%

“…FeCrAl, and NiAl, as well as a quasicrystalline alloy AlCoFeCr, were deposited on AISI 310 foils. The coatings were then tested by immersion in a 62 mol.% Li 2 CO 3 -38 mol.% K 2 CO 3 molten carbonate eutectic mixture at 700°C in air by electrochemical impedance spectroscopy (EIS) [20]. On exposure to the molten carbonate mixture, Ni and Fe aluminide coatings developed a LiAlO 2 protective layer [21].…”

Section: Introductionmentioning

confidence: 99%

Corrosion evaluation of alloys and MCrAlX coatings in molten carbonates for thermal solar applications

Vidal

Noel

Weber

2016

Solar Energy Materials and Solar Cells

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3 at temperatures higher than 600°C were evaluated using an open-circuit potential followed by a potentiodynamic polarization sweep to determine the corrosion rates. Because the best-performing alloys at 750°C were In800H followed by SS310, these two alloys were selected as the substrate material for the MCrAlX coatings. The coatings were able to mitigate corrosion in molten carbonates environments. The corrosion of substrates SS310 and In800H was reduced from ~2,500 µm/year to 34 µm/year when coated with high-velocity oxyfuel (HVOF) NiCoCrAlHfSiY and pre-oxidized (air, 900°C, 24 h, 0.5°C/min) before molten carbonate exposure at 700°C in bone-dry CO 2 atmosphere. Metallographic characterization of the corroded surfaces showed that the formation of a uniform alumina scale during the pre-oxidation seems to protect the alloy from the molten carbonate attack.

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“…To protect wet-seals from corrosion, some efforts have been conducted to develop an Al-coating manufacturing process, mainly including thermal spraying [10], slurry [11], and ion vapor deposition (IVD) [12]. Moon etc.…”

Section: Introductionmentioning

confidence: 99%