Microstructure characterization by X-ray tomography and EBSD of porous FeCr produced by liquid metal dealloying

Mokhtari, Morgane; Bourlot, Christophe Le; Adrien, Jérôme; Bonnin, Anne; Wada, Takeshi; Duchet‐Rumeau, Jannick; Kato, Hidemi; Maire, Éric

doi:10.1016/j.matchar.2018.06.032

Cited by 21 publications

(43 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We note that these quantities are in good agreement with the sum of the ligament and pore size reported in Ref. [51].…”

Section: Comparison With Experimental Microstructuressupporting

confidence: 91%

“…In addition, it was suggested that structures manufactured from dealloying can present significantly different topologies than the ones obtained from spinodal decomposition [53]. To account for these effects, a natural extension of this work will consist of taking more realistic initial microstructures, obtained either from numerical models [1,16,28] or from tomographic observations of dealloyed samples [26,27,43,51]. Another limitation of the present study is the weak surface energy anisotropy considered in Sec.…”

Section: Discussionmentioning

confidence: 99%

“…In addition to the numerical study presented above, we propose here to compare our results with tomographic pictures of samples obtained from liquid metal dealloying [51]. As detailed in Ref.…”

Section: Comparison With Experimental Microstructuresmentioning

confidence: 97%

“…As detailed in Ref. [51], two different samples with volume fractions of 40% and 50% have been obtained from precursor alloys of (FeCr) 0.4 Ni 0.6 and (FeCr) 0.5 Ni 0.5 compositions respectively. Upon immersion of the samples in liquid Mg during 1 hour at 1097 K, Ni is dissolved selectively in the Mg bath while Fe and Cr reorganize and form a porous connected structure.…”

Section: Comparison With Experimental Microstructuresmentioning

confidence: 99%

See 3 more Smart Citations

Phase-field investigation of the coarsening of porous structures by surface diffusion

Geslin

Buchet

Wada

et al. 2019

Phys. Rev. Materials

Self Cite

View full text Add to dashboard Cite

Nano and microporous connected structures have attracted increasing attention in the past decades due to their high surface area, presenting interesting properties for a number of applications. These structures generally coarsen by surface diffusion, leading to an enlargement of the structure characteristic length scale. We propose to study this coarsening behavior using a phase-field model for surface diffusion. In addition to reproducing the expected scaling law, our simulations enable to investigate precisely the evolution of the topological and morphological characteristics along the coarsening process. In particular, we show that after a transient regime, the coarsening is self-similar as exhibited by the evolution of both morphological and topological features. In addition, the influence of surface anisotropy is discussed and comparisons with experimental tomographic observations are presented.

show abstract

“…We note that these quantities are in good agreement with the sum of the ligament and pore size reported in Ref. [51].…”

Section: Comparison With Experimental Microstructuressupporting

confidence: 91%

Section: Discussionmentioning

confidence: 99%

Section: Comparison With Experimental Microstructuresmentioning

confidence: 97%

Section: Comparison With Experimental Microstructuresmentioning

confidence: 99%

See 2 more Smart Citations

Phase-field investigation of the coarsening of porous structures by surface diffusion

Geslin

Buchet

Wada

et al. 2019

Phys. Rev. Materials

Self Cite

View full text Add to dashboard Cite

show abstract

“…[44] However, the one which takes into account the apparent density rather than the real density fits well with our lower-density materials, which is consistent with the low connectivity measured for these materials. [28,43] The continuous black line corresponds to the fit of our results by Equation (3), corresponding to a generalization of Gibson and Ashby's law for a nonpure bending behavior.…”

Section: Nanoindentation Testsmentioning

confidence: 89%

Mechanical Properties of FeCr‐Based Composite Materials Elaborated by Liquid Metal Dealloying towards Bioapplication

et al. 2020

Self Cite

View full text Add to dashboard Cite

Liquid metal dealloying (LMD) is a new technology to create porous materials. From a (FeCr) x-Ni 1-x precursor, it is possible to get a bicontinuous structure of FeCr and Mg: a metal-metal composite. An etching step removes the Mg solidstate solution phase to give a metal-air composite. The last step, polymer infiltration, gives metal-polymer composites. Herein, metal-metal, metal-air, and metal-polymer (rubbery or glassy polymers) with three different phase ratios are elaborated by LMD from Ni-based precursors and their mechanical properties are analyzed. A full polymer infiltration into the pores is obtained and the epoxy polymer properties are not affected by the metallic foam presence. Concerning control of the mechanical properties, the material's second-phase selection is a key factor. Herein, it is shown that the mechanical properties are easily designed by optimizing phase ratio, ligament size, and second-phase type and that these materials are promising materials for biomedical applications.

show abstract

A diffusion model for liquid metal dealloying. Application to NiCu precursors dealloyed in liquid Ag

Lesage,

Suga,

Wada

et al. 2024

Acta Materialia

View full text Add to dashboard Cite

Microstructure characterization by X-ray tomography and EBSD of porous FeCr produced by liquid metal dealloying

Cited by 21 publications

References 51 publications

Phase-field investigation of the coarsening of porous structures by surface diffusion

Phase-field investigation of the coarsening of porous structures by surface diffusion

Mechanical Properties of FeCr‐Based Composite Materials Elaborated by Liquid Metal Dealloying towards Bioapplication

A diffusion model for liquid metal dealloying. Application to NiCu precursors dealloyed in liquid Ag

Contact Info

Product

Resources

About