Surface engineering by thermal spraying nanocrystalline coatings: X-ray and TEM characterisation of As-deposited iron aluminide structure

Ji, Gang; Morniroli, J. P.; Tidu, Aurélien; Coddet, Christian; Grosdidier, Thierry

doi:10.1051/jp4:20020259

Cited by 6 publications

(6 citation statements)

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“…The results concerning the size of the coherently diffracting domains (D eff ) are given in Table 2. As already revealed in thermally sprayed [41] and fieldactivated synthesized FeAl [42], the XRD technique is not suitable for obtaining reliable information on grain size if heterogeneous nanostructure and/or composition gradients are present. However, it is clear that D eff is much smaller for the SPS1 sample than that of the other samples processed at higher temperatures.…”

Section: Microstructure Evolution and Distribution Of Nanostructurementioning

confidence: 94%

Processing conditions, microstructure and mechanical properties of hetero-nanostructured ODS FeAl alloys produced by spark plasma sintering

Ji¹,

Bernard²,

Launois³

et al. 2013

Materials Science and Engineering: A

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Section: Microstructure Evolution and Distribution Of Nanostructurementioning

confidence: 94%

Processing conditions, microstructure and mechanical properties of hetero-nanostructured ODS FeAl alloys produced by spark plasma sintering

Ji¹,

Bernard²,

Launois³

et al. 2013

Materials Science and Engineering: A

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“…Details of the XRD analysis can be found elsewhere [6,12]. The relative LRO parameter was estimated from the X-ray diffraction peaks by comparing the intensities of the superlattice S(100) and fundamental F(200) lines [6,12]. MS measurements were carried out at room temperature in the conventional constant-acceleration mode with a 57 Co source.…”

Section: Experimental Methodsmentioning

confidence: 99%

“…X-ray line broadening analysis was used to obtain the size of the coherently diffracting domains (D eff ). Details of the XRD analysis can be found elsewhere [6,12]. The relative LRO parameter was estimated from the X-ray diffraction peaks by comparing the intensities of the superlattice S(100) and fundamental F(200) lines [6,12].…”

Section: Experimental Methodsmentioning

confidence: 99%

Mössbauer and X-ray diffraction characterization of Fe60Al40 coatings prepared by thermal spraying

Cordier-Robert¹,

Grosdidier

et al. 2006

Hyperfine Interact

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Microstructured (atomized) and nanostructured (milled) Fe 60 Al 40 powders together with their corresponding coatings synthesized by High Velocity Oxy-fuel (HVOF) or Atmospheric Plasma Spray (APS) thermal spraying techniques have been characterized by Mössbauer Spectroscopy (MS) and X-ray Diffraction (XRD). The evolution of the microstructure and the atomic ordering degree in the powders and coatings are discussed at the light of the various processing conditions. The operational correlation between the parameters of the duplex morphology of coatings and the processing parameters is discussed.

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“…The growing interest in the promising properties of intermetallic alloys based on the Fe-Al equilibrium phase diagram contributed to the gradual development of the HVOF spraying technique, which proved useful for the production of such intermetallic coatings in terms of their practical application on various steel elements, exposed to corrosive and erosive environment in the energy sector ( Ref 28,[33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][70][71][72][73][74]. The focus in these works was mostly placed on the structural properties of Fe-Al coatings and their wear resistance under dry friction (in congruence with ASTM G99-03), abrasive wear (in accordance with ASTM G65-00) and erosive wear, along with the involvement of Al 2 O 3 particles (Ref 44).…”

Section: Introductionmentioning

confidence: 99%

The Effect of Hot Treatment on Composition and Microstructure of HVOF Iron Aluminide Coatings in Na2SO4 Molten Salts

et al. 2019

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The paper deals with the hot corrosion performance of FeAl base intermetallic HVOF coatings in molten Na 2 SO 4 at 850°C in an isothermal process over the span of 45 h under static conditions. The test was validated with electron microscopy and compositional analyses in the cross-section area, as well as x-ray diffraction techniques. All the coatings were characterized by Al-depleted regions, intersplat oxidation and different stoichiometric ratios of iron aluminides. The results were discussed in relation to the formation of oxide scales on the surface after exposition to corrosive media, as well as heterogeneity and defects of the sprayed coatings. The Fe40Al (at.%) powder showed quite uniform phase distribution after spraying and preserved its integrity after corrosion test; the FeCr-25% ? FeAl-TiAl-Al 2 O 3 (wt.%) and Fe46Al-6.55Si (at.%) powders exhibited interface oxidation, with localized corrosion attacks proceeding through particle boundaries and microcrack networks with no evidence of Na and S penetration. Fe x Al y alloys are susceptible to accelerated damage and decohesion of the coating, whereas the formation of sulfides is observed at certain points.

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Surface engineering by thermal spraying nanocrystalline coatings: X-ray and TEM characterisation of As-deposited iron aluminide structure

Cited by 6 publications

References 0 publications

Processing conditions, microstructure and mechanical properties of hetero-nanostructured ODS FeAl alloys produced by spark plasma sintering

Processing conditions, microstructure and mechanical properties of hetero-nanostructured ODS FeAl alloys produced by spark plasma sintering

Mössbauer and X-ray diffraction characterization of Fe60Al40 coatings prepared by thermal spraying

The Effect of Hot Treatment on Composition and Microstructure of HVOF Iron Aluminide Coatings in Na2SO4 Molten Salts

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