Fe-Ti metastable-phase formation by ion-beam mixing

Brenier, R.; Capra, T.; Thévenard, P.; Pérez, A.; Treilleux, M.; Rivory, J.; Dupuy, J.; Guiraud, Germain

doi:10.1103/physrevb.41.11784

Cited by 10 publications

(6 citation statements)

References 15 publications

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“…Previous studies on irradiation stability of Fe/Ti multilayers, performed at room temperature, have observed the formation of a solid solution and amorphous compounds [32][33][34]. Intermixing studies performed at temperature ranges comparable to our study have observed the formation first of a Fe-Ti solid solution, followed by the precipitation of FeTi intermetallics [35][36][37].…”

Section: Titanium Thin Film On Fe-12%cr Substratesupporting

confidence: 77%

Irradiation-induced intermixing effects at the interfaces of titanium and titanium-dioxide thin films and Fe-12%Cr substrate

Mairov

Sridharan

2016

Nuclear Instruments and Methods in Physics Research Section B:

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Irradiation-induced compositional and structural changes at the interfaces between Fe-12%Cr binary alloy substrate and thin films of titanium and titanium-dioxide have been investigated. Irradiations were performed with 5 MeV Ni 2+ ions at 300˚C and 500˚C, up to damage levels of 40 dpa (displacements per atom). For the 300˚C irradiation case, irradiation enhanced the interdiffusion coefficient by a factor over twenty for the titanium film samples, but by a factor of only 1.2 for the titanium dioxide film samples. At 500˚C, significant intermixing was observed in the titanium film samples and resulted in the formation of a wide Fe 2 Ti reaction zone. For the titanium dioxide film samples, chromium was observed to diffuse into sub-stoichiometric regions of the film. Irradiation caused the formation of chromium-rich nanoprecipitates within the oxide film and promoted a phase transformation in the film from anatase TiO 2 to the Ti 2 O 3 phase.

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Section: Titanium Thin Film On Fe-12%cr Substratesupporting

confidence: 77%

Irradiation-induced intermixing effects at the interfaces of titanium and titanium-dioxide thin films and Fe-12%Cr substrate

Mairov

Sridharan

2016

Nuclear Instruments and Methods in Physics Research Section B:

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“…As was shown by Brenier et al [23], such a contamination can prevent the formation of the amorphous phase. However, in cleaner Fe/Ti MLs the amorphization effect due to Xe ion-beam mixing was reported [22]. All our samples were prepared in the same deposition conditions, therefore it is expected that the possible contamination of the Fe-Ti interfaces remains at the same level and does not significantly affect the dependence of the structural transformations on the type of ion, ion fluence, sample composition (β) and elemental thickness of Fe and Ti discussed above.…”

Section: Discussionmentioning

confidence: 85%

“…The structural transformations and the changes of the relative fractions of the relevant phases can be associated with the changes of the iron content in the mixed phases. As shown in [22], the enthalpy curves for the amorphous FeTi and bcc-FeTi solid solution show three ranges for the stability of these phases depending on the Fe content, x:…”

Section: Discussionmentioning

confidence: 97%

“…The amorphous FeTi phase was formed by vapour quenching [15], sputtering [14][15][16]19], mechanical alloying [20] and ion implantation [21]. Amorphization of the crystalline Fe/Ti multilayers by ion-beam mixing with Xe ions of energy of 800 keV was also demonstrated [22]. However, the possibility of the formation of the amorphous phase in this way depends strongly on the purity of the Fe and Ti layers and may be prohibited by carbon and oxygen contamination at the interfaces [23].…”

Section: Introductionmentioning

confidence: 99%

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Structural transformations induced in Fe/Ti multilayers by Ar- and Kr-ion irradiation

Kopcewicz

Jagielski

Stobiecki

2005

J. Phys.: Condens. Matter

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The structural transformations in Fe/Ti multilayers induced by Ar- and Kr-ion irradiation are studied by conversion electron Mössbauer spectroscopy (CEMS). Samples of Ti-to-Fe thickness ratios β = dTi/dFe = 1 (nominal composition Fe0.6Ti0.4) and β = 1.5 (Fe0.5Ti0.5) with modulation wavelengths Λ = 10–60 nm (Λ = dFe+dTi, where dFe and dTi are the elemental thickness of Fe and Ti layers) were used. The total thickness of the films was 240 nm. The ion-beam mixing of multilayers was induced by 200 keV Ar2+ and 350 keV Kr2+ ion irradiation with fluences ranging from 5 × 1013 to 1.3 × 1017 cm−2 (Ar) and 0.5 × 1013 to 5.6 × 1016 cm−2 (Kr). The ranges of Ar and Kr ions were about 105 and 95 nm, respectively. Ion-beam mixing process leads at low ion fluence to the formation of the solid state solution bcc-FeTi which at higher ion fluences converts to the amorphous FeTi phase. The degree of amorphization depends on the ion fluence, composition of the FeTi system and modulation wavelength. It was noted that the mixing efficiency is considerably larger for heavier ions (Kr as compared with Ar). The relative fractions of given phases were determined from the CEMS measurements. Deterioration of the amorphous phase and partial restoration of the bcc-FeTi solid solution at highest Ar-ion fluences was observed. The results were interpreted based on the enthalpy curves for amorphous FeTi and bcc-FeTi solid solutions.

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“…The maximum glass forming ability as reported earlier by various authors also agrees well. As an example, for Fe with Hf, Ti the best glass forming compositions are Fe 58 Hf 42 [31], Fe 50 Ti 50 [50] where enthalpy difference between amorphous to solid solution is exactly the maximum as determined in the present calculations. In addition to that the maximum in the enthalpy difference plot corresponds to Laves phase formation which will be analyzed further in the subsequent sections.…”

Section: Predictive Glass Forming Ability Of Fe-etm Binary and Ternarmentioning

confidence: 89%

A unified approach to phase and microstructural stability for Fe-ETM alloys through Miedema's model

et al. 2012

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Fe-Ti metastable-phase formation by ion-beam mixing

Cited by 10 publications

References 15 publications

Irradiation-induced intermixing effects at the interfaces of titanium and titanium-dioxide thin films and Fe-12%Cr substrate

Irradiation-induced intermixing effects at the interfaces of titanium and titanium-dioxide thin films and Fe-12%Cr substrate

Structural transformations induced in Fe/Ti multilayers by Ar- and Kr-ion irradiation

A unified approach to phase and microstructural stability for Fe-ETM alloys through Miedema's model

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