Oxidation of Iron-Nickel Alloys

Foley, R. T.; Guare, C. J.; Schmidt, Hans-Eberhard

doi:10.1149/1.2428615

Cited by 16 publications

(10 citation statements)

References 1 publication

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“…Thus lines for FoP (12) and Fe20~ (11) are observed in the vacuum of the high-temperature electron diffraction camera. Thus lines for FoP (12) and Fe20~ (11) are observed in the vacuum of the high-temperature electron diffraction camera.…”

Section: Oxidation Of Fe-ni Alloys Containing 30-75% Nimentioning

confidence: 94%

Oxidation of Iron-Nickel Alloys

Foley

1962

J. Electrochem. Soc.

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The oxidation of Fe-Ni alloys in the 500~176 range has been the subject of many investigations. These observations are summarized, and an attempt is made to generalize on the kinetics and mechanism of oxidation. The composition of the oxide film over the entire composition range can be explained in terms of the thermodynamic stability of the oxides of Fe, of NiO, and of Ni,Fe~_zO,. In alloys of all compositions that have been investigated the first reaction is one of selective oxidation, creating a Ni-rich metal layer at the alloy-oxide interface. The growth of a Ni-containing spinel is promoted and formation of FeO is suppressed. This explains the reduction of oxidation rate to about 1000 times less than that of pure iron. The short-time kinetics of oxidation appears to be governed by diffusion through this Ni-rich metal layea" or by diffusion through the Ni-containing spinel. Only at the Ni-rich end of the Fe-Ni system is NiO observed, and this exists next to the alloy interface under a layer of spinel. The reaction between NiO and Fe208 is rapid at these temperatures, thus explaining why these two oxides are not observed together. On prolonged reaction, subscale oxidation and intergranutar attack is observed. Because of the stratification of oxide layers and these secondary effects, the development of a general rate law would be difficult.) unless CC License in place (see abstract). ecsdl.org/site/terms_use address. Redistribution subject to ECS terms of use (see 138.251.14.35 Downloaded on 2015-04-12 to IP

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Section: Oxidation Of Fe-ni Alloys Containing 30-75% Nimentioning

confidence: 94%

Oxidation of Iron-Nickel Alloys

Foley

1962

J. Electrochem. Soc.

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“…3, 4f), but we see no evidence for leaching or reaction of minerals grains along fracture surfaces. Lunar RE-merrillite and matrix glass, as well as Fe-Ni metal, also remain intact and unaltered, although the high Ni content of the metal probably helps to stabilize it (Foley et al, 1955). Potential effects of terrestrial alteration are discussed in section 7.…”

Section: Texturesmentioning

confidence: 99%

Northwest Africa 773: lunar mare breccia with a shallow-formed olivine-cumulate component, inferred very-low-Ti (VLT) heritage, and a KREEP connection

Jolliff¹,

Korotev²,

Zeigler³

et al. 2003

Geochimica et Cosmochimica Acta

119

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“…Since the operating temperature of LiCl–Li 2 O is higher than 600 °C, the Fe–36Ni alloy was chosen because Ni can increase the resistance of high-temperature oxidation (Supplementary Figs. 8 – 11 ) 33 . Like the pure iron electrode, a dense oxide film is formed on the Fe-36Ni electrode after pre-oxidation (Fig.…”

Section: Resultsmentioning

confidence: 99%

An iron-base oxygen-evolution electrode for high-temperature electrolyzers

Gao

Zhang

et al. 2023

Nat Commun

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High-temperature molten-salt electrolyzers play a central role in metals, materials and chemicals production for their merit of favorable kinetics. However, a low-cost, long-lasting, and efficient high-temperature oxygen evolution reaction (HT-OER) electrode remains a big challenge. Here we report an iron-base electrode with an in situ formed lithium ferrite scale that provides enhanced stability and catalytic activity in both high-temperature molten carbonate and chloride salts. The finding is stemmed from a discovery of the ionic potential-stability relationship and a basicity modulation principle of oxide films in molten salt. Using the iron-base electrode, we build a kiloampere-scale molten carbonate electrolyzer to efficiently convert CO2 to carbon and oxygen. More broadly, the design principles lay the foundations for exploring cheap, Earth-abundant, and long-lasting HT-OER electrodes for electrochemical devices with molten carbonate and chloride electrolytes.

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Oxidation of Iron-Nickel Alloys

Cited by 16 publications

References 1 publication

Oxidation of Iron-Nickel Alloys

Oxidation of Iron-Nickel Alloys

Northwest Africa 773: lunar mare breccia with a shallow-formed olivine-cumulate component, inferred very-low-Ti (VLT) heritage, and a KREEP connection

An iron-base oxygen-evolution electrode for high-temperature electrolyzers

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