Nanometer-sized porous Ti-based metallic glass

Jayaraj, J.; Park, B.J.; Kim, D.H.; Kim, W.T.; Fleury, Éric

doi:10.1016/j.scriptamat.2006.07.054

Cited by 78 publications

(50 citation statements)

References 20 publications

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“…[52,53] Solid-state methods have also been used: dissolution of crystalline phase from an extruded amorphous-crystalline composite [54] and selective dissolution of one of the two amorphous phases of an alloy. [55] Beside reducing density, pores in amorphous metals improve significantly their compressive ductility, from near zero in the bulk to values as high as 80 % for cellular architectures. This is explained by shear-band interruption by individual pores at low porosities and stable plastic bending of thin struts at higher porosities.…”

Section: Amorphous Metallic Foamsmentioning

confidence: 99%

See 1 more Smart Citation

Porous Metals and Metallic Foams: Current Status and Recent Developments

Lefebvre¹,

Banhart²,

Dunand³

2008

Adv Eng Mater

714

269

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Porous metals and metallic foams are presently the focus of very active research and development activities. There are currently around 150 institutions working on metallic foams worldwide, most of them focussing on their manufacture and characterisation. Various companies are developing and producing these materials which are now being used in numerous industrial applications such as lightweight structures, biomedical implants, filters, electrodes, catalysts, and heat exchangers. This review summarizes recent developments on these materials, with particular emphasis on research presented at the latest International Conference on Porous Metals and Metallic Foams (MetFoam 2007).

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Section: Amorphous Metallic Foamsmentioning

confidence: 99%

“…Amorphous metals with submicron porosity have also been achieved by selective leaching in amorphous/crystalline or amorphous/amorphous metal composites. [98,99] Finally, Utsunomiya et al recently presented the formation of submicron pores on the surface of carbon steel using oxidation/reduction treatments. [97].…”

Section: Nanoporous Materialsmentioning

confidence: 99%

Porous Metals and Metallic Foams: Current Status and Recent Developments

Lefebvre¹,

Banhart²,

Dunand³

2008

Adv Eng Mater

714

269

View full text Add to dashboard Cite

show abstract

“…Metallic glasses with phase separation structure exhibit better plasticity than monolithic metallic glasses [2]. Phase separating metallic glasses can also be utilized to fabricate nanomaterials [3] and porous materials [4]. Apart from this, phase separation is considered to account for the high-density nucleation in devitrification of metallic glasses [3,5].…”

Section: Introductionmentioning

confidence: 99%

Phase Separation and Crystallization Induced by Electron Irradiation in Nanoscale Fe56.5Mn11Cr8.5Ni4Si10C10 Metallic Glass

Chen

Zhang

Xia

et al. 2015

Acta Metall. Sin. (Engl. Lett.)

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A nanoscale Fe 56.5 Mn 11 Cr 8.5 Ni 4 Si 10 C 10 metallic glass was irradiated by electron beam in a 200 kV transmission electron microscope. Structure evolution in the metallic glass was investigated in situ during continuous irradiation, where phase separation was observed after irradiation for 5 min and crystallization was observed after 33.5 min. Based on the analysis of irradiation effect, atomic displacement is believed to be the main reason for the structure rearrangement. Accumulation of atomic displacement increases the energy of the sample and promotes atomic diffusion during transformation. On the other hand, the large specific surface area of the sample also contributes to increasing free energy and atomic diffusion.

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“…In comparison with crystalline alloys, amorphous alloys are considered as good starting alloy for dealloying due to their monolithic phase with a homogeneous composition and structure down to subnanoscale [23,24]. There are several attempts to synthesize nanoporous metals using amorphous alloy as the starting alloy [25,26,27]. In our previous work, nanoporous structure was synthesized on the surface of Ti-Cu amorphous alloy in nitric acid solution [28].However, it is difficult to fabricate multilayered nanoporous structure on Ti and Ti alloys using traditional electrochemical etching because of their self-passive properties.…”

Section: Introductionmentioning

confidence: 99%

Effects of pulse voltage on the formation of nanoporous Ti oxides by dealloying amorphous TiCu alloy

Zhu¹,

Pi²,

Xie³

et al. 2013

J. Phys.: Conf. Ser.

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Abstract. In present study, we prepared nanoporous Ti oxides by potentiostat and pulse dealloying TiCu amorphous alloy in HNO 3 solution. The influence of applied voltage on the morphology was investigated by SEM. The mechanism of dealloying was also discussed. A multilayer nanoporous structure was fabricated using pulse dealloying. The ideal nanoporous structure with mean pore diameter of about 50-100 nm and mean pore wall thickness of about 50 nm was obtained using pulse dealloying with initial voltage of 1.0 V and pulse size of 0.4 V. The static currents for pulse dealloying are higher than those for potentiostat dealloying under the same initial potentials. The nanoporous surface is mainly composed of TiO, Ti 2 O 3 and TiO 2 .

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Nanometer-sized porous Ti-based metallic glass

Cited by 78 publications

References 20 publications

Porous Metals and Metallic Foams: Current Status and Recent Developments

Porous Metals and Metallic Foams: Current Status and Recent Developments

Phase Separation and Crystallization Induced by Electron Irradiation in Nanoscale Fe56.5Mn11Cr8.5Ni4Si10C10 Metallic Glass

Effects of pulse voltage on the formation of nanoporous Ti oxides by dealloying amorphous TiCu alloy

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