Development of Plasma-Sprayed Molybdenum Carbide-Based Anode Layers with Various Metal Oxides for SOFC

Faisal, Nadimul Haque; Ahmed, Rehan; Katikaneni, Sai P.; Souentie, Stamatios; Goosen, Mattheus F. A.

doi:10.1007/s11666-015-0315-2

Cited by 10 publications

(13 citation statements)

References 25 publications

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“…This suggests that the pores formed as a result of reduced bonding between adjacent splats, while micro-cracking arose from contraction of the splat in the course of quenching and succeeding differential thermal contraction between substrate and coating. This confirms previous related results from our investigations [32][33][34][35]. For the anode cross-section surfaces (Fig.…”

Section: Analysis Of Anode Morphology and Nanoindentation Testingsupporting

confidence: 92%

“…The order of catalyst stability was found to be Mo 2 CAl 2 O 3 > Mo 2 C-ZrO 2 > Mo 2 C-TiO 2 , with the first being the most stable. Considering such key factors, these composite materials can potentially be used for an improved anode performance in SOFCs [35] as previously indicated by the authors. It is important to note that in anode layer, the deposited splats play a crucial role in determining the physical properties of the coatings.…”

Section: Introductionmentioning

confidence: 82%

“…As the Mo peak in the current study had no overlapping peaks (Figs. 3 and 5), a single peak fitting refinement was used, which is consistent with previous studies of thermal spray coatings [32][33][34][35]. At Engin-X neutron scattering facility, peak positions can be precisely determined by Bleast-squares^refinement of the peaks, with a typical sensitivity of 50 με (1 με = 10…”

Section: Assessment Of Anode Residual Strain and Residual Stress Profmentioning

confidence: 93%

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Neutron Diffraction Residual Strain Measurements of Molybdenum Carbide-Based Solid Oxide Fuel Cell Anode Layers with Metal Oxides on Hastelloy X

et al. 2017

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Thermal spray deposition processes impart residual stress in layered Solid Oxide Fuel Cells (SOFC) materials and hence influence the durability and efficiency of the cell. The current study which is the first of its kind in published literature, reports results on using a neutron diffraction technique, to non-destructively evaluate the through thickness strain measurement in plasma sprayed (as-sprayed) anode layer coatings on a Hastelloy®X substrate. Through thickness neutron diffraction residual strain measurements were done on three different anode coatings (Mo-Mo 2 C/Al 2 O 3 , Mo-Mo 2 C/ ZrO 2 and Mo-Mo 2 C/TiO 2 ) using the vertical scan mode. The three anode coatings (developed through optimised process parameters) investigated had porosities as high as 20%, with thicknesses between 200 μm to 300 μm deposited on 4.76 mm thick Hastelloy®X substrate discs of 20 mm diameter. The results showed that while the through thickness residual strain in all three anodes was dissimilar for the investigated crystallographic planes, on average it was tensile. Other measurements include X-ray diffraction, nanoindentation and SEM microscopy. As the anode layer microstructures are complex (includes bi-layer alternate phases), nondestructive characterisation of residual strain, e.g. using neutron diffraction, provides a useful measure of through thickness strain profile without altering the stress field in the SOFC electrode assembly.

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Section: Analysis Of Anode Morphology and Nanoindentation Testingsupporting

confidence: 92%

Section: Introductionmentioning

confidence: 82%

Section: Assessment Of Anode Residual Strain and Residual Stress Profmentioning

confidence: 93%

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Neutron Diffraction Residual Strain Measurements of Molybdenum Carbide-Based Solid Oxide Fuel Cell Anode Layers with Metal Oxides on Hastelloy X

et al. 2017

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“…The coated disc specimen was sourced from work completed previous to the investigation [13,32], as shown in Fig. 3 was assumed as 0.30 (Molybdenum Poisson's ratio) and for the substrate ( s ν ) was presumed to be 0.32 [33].…”

Section: Coating and Disc Substrate Materialsmentioning

confidence: 99%

Diametral compression test method to analyse relative surface stresses in thermally sprayed coated and uncoated circular disc specimens

Faisal

Mann

Duncan

et al. 2019

Surface and Coatings Technology

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“…In a PC-SOFC, the reaction product (water vapor) is evolved at the cathode side instead of at the anode (fuel side) as is the case for oxygen ion-conducting SOFC. Hence, no dilution of the fuel takes place in the PCFC, resulting in significantly higher efficiency (adapted from Faisal et al, 2015).…”

mentioning

confidence: 99%

Fuel cells as an energy source for desalination applications

Faisal¹,

Ahmed²,

Islam

et al. 2017

Renewable Energy Technologies for Water Desalination

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Nowadays, there is a renewed interest in fuel cell technology from industry and academia, electrochemistry and catalysis scientists. This interest is due to environmental legislations for CO 2 and other greenhouse gases emissions (United Nations Environment Programme and the World Trade Organization, 2009) that demand the use of high efficiency energy production systems. Such systems have great potential in the area of desalination technology (

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Development of Plasma-Sprayed Molybdenum Carbide-Based Anode Layers with Various Metal Oxides for SOFC

Cited by 10 publications

References 25 publications

Neutron Diffraction Residual Strain Measurements of Molybdenum Carbide-Based Solid Oxide Fuel Cell Anode Layers with Metal Oxides on Hastelloy X

Neutron Diffraction Residual Strain Measurements of Molybdenum Carbide-Based Solid Oxide Fuel Cell Anode Layers with Metal Oxides on Hastelloy X

Diametral compression test method to analyse relative surface stresses in thermally sprayed coated and uncoated circular disc specimens

Fuel cells as an energy source for desalination applications

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