Physico-chemical characterization of nanocrystalline (Fe, Ni) alloys

Werkmeister, K.-St.; Rullang, F.; Koch, Marcus; Heyer, Martina; Schwitzgebel, G.

doi:10.1016/s0965-9773(99)00105-1

Cited by 6 publications

(1 citation statement)

References 8 publications

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“…Fabrication and structure of Fe-Ni alloy were studied by some investigators. [7][8][9][10][11] Slight variation of the composition in the Fe-Ni alloy can cause substantial changes in the coercive, anisotropic and magnetostrictive properties. 12) An important feature of the Fe-Ni alloy system is its structural evolution, with a change from bcc for the Fe-rich alloy to fcc for the alloy with larger Ni content.…”

Section: Introuductionmentioning

confidence: 99%

Low Temperature Isothermal Reduction Kinetics of Fe2O3/NiO Mixed Oxides and Comparative Synthesis of Fe1−xNix Alloys

et al. 2008

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Two Molar ratios 1 : 1 and 1 : 2 of AR grade nickel oxide and iron oxide powder was mixed and compacted. The fired compacts were isothermally reduced in pure hydrogen at 500, 550, 600 and 650 C. Based on thermogravimetric analysis, the reduction behavior and kinetics reaction mechanism were studied comparatively for the different mixed oxides ratios. The initial fired powder and the various reduction products were characterized by XRD, SEM, TEM and reflected light microscope to reveal the effect of hydrogen reduction on composition and microstructure of produced Ferronickel alloy. Synthesis of nanocrystalline Fe 1Àx Ni x alloy with 33 and 20 at% Ni for reduction of 1 : 1 and 1 : 2 NiO/Fe 2 O 3 ratios was detected respectively. The activation energy values were calculated from Arrhenius equation and the approved mathematical formulations for the gas solid reaction were applied. It was found that for NiO/Fe 2 O 3 of both 1 : 1 and 1 : 2 ratios, the initial reduction stages is controlled by the combined gaseous diffusion and interfacial chemical reaction mechanisms while at the final reduction stages the reaction is controlled by the interfacial chemical reaction mechanism.

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Section: Introuductionmentioning

confidence: 99%

Low Temperature Isothermal Reduction Kinetics of Fe2O3/NiO Mixed Oxides and Comparative Synthesis of Fe1−xNix Alloys

et al. 2008

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Influence of microstructure on the corrosion resistance of Fe–44Ni thin films

Lü

Liu

2016

Int J Miner Metall Mater

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An Fe-44Ni nanocrystalline (NC) alloy thin film was prepared through electrodeposition. The relation between the microstructure and corrosion behavior of the NC film was investigated using electrochemical methods and chemical analysis approaches. The results show that the NC film is composed of a face-centered cubic phase (γ-(Fe,Ni)) and a body-centered cubic phase (α-(Fe,Ni)) when it is annealed at temperatures less than 400°C. The corrosion resistance increases with the increase in grain size, and the corresponding corrosion process is controlled by oxygen reduction. The NC films annealed at 500°C and 600°C do not exhibit the same pattern, although their grain sizes are considerably large. This result is attributed to the existence of an anodic phase, Fe 0.947 Ni 0.054 , in these films. Under this condition, the related corrosion process is synthetically controlled by anodic dissolution and depolarization.

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Peculiarities of Fe?Ni alloy crystallization and stability inside C nanotubes as derived through electron microscopy

Golberg

Bandô

et al. 2005

Acta Materialia

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Physico-chemical characterization of nanocrystalline (Fe, Ni) alloys

Cited by 6 publications

References 8 publications

Low Temperature Isothermal Reduction Kinetics of Fe<SUB>2</SUB>O<SUB>3</SUB>/NiO Mixed Oxides and Comparative Synthesis of Fe<SUB>1−<I>x</I></SUB>Ni<I><SUB>x</SUB></I> Alloys

Low Temperature Isothermal Reduction Kinetics of Fe<SUB>2</SUB>O<SUB>3</SUB>/NiO Mixed Oxides and Comparative Synthesis of Fe<SUB>1−<I>x</I></SUB>Ni<I><SUB>x</SUB></I> Alloys

Influence of microstructure on the corrosion resistance of Fe–44Ni thin films

Peculiarities of Fe?Ni alloy crystallization and stability inside C nanotubes as derived through electron microscopy

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Physico-chemical characterization of nanocrystalline (Fe, Ni) alloys

Cited by 6 publications

References 8 publications

Low Temperature Isothermal Reduction Kinetics of Fe<SUB>2</SUB>O<SUB>3</SUB>/NiO Mixed Oxides and Comparative Synthesis of Fe<SUB>1&minus;<I>x</I></SUB>Ni<I><SUB>x</SUB></I> Alloys

Low Temperature Isothermal Reduction Kinetics of Fe<SUB>2</SUB>O<SUB>3</SUB>/NiO Mixed Oxides and Comparative Synthesis of Fe<SUB>1&minus;<I>x</I></SUB>Ni<I><SUB>x</SUB></I> Alloys

Influence of microstructure on the corrosion resistance of Fe–44Ni thin films

Peculiarities of Fe?Ni alloy crystallization and stability inside C nanotubes as derived through electron microscopy

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Low Temperature Isothermal Reduction Kinetics of Fe<SUB>2</SUB>O<SUB>3</SUB>/NiO Mixed Oxides and Comparative Synthesis of Fe<SUB>1−<I>x</I></SUB>Ni<I><SUB>x</SUB></I> Alloys

Low Temperature Isothermal Reduction Kinetics of Fe<SUB>2</SUB>O<SUB>3</SUB>/NiO Mixed Oxides and Comparative Synthesis of Fe<SUB>1−<I>x</I></SUB>Ni<I><SUB>x</SUB></I> Alloys