Eliminating reversible hydrogen embrittlement in high-strength martensitic steel by an electric current pulse

Yi, Kun; Ma, Rui; Xiang, Siqi; Liu, Xuebing; Liu, Changhao; Zhang, Xinfang; Fu, Yabo

doi:10.1016/j.ijhydene.2022.03.169

Cited by 6 publications

(2 citation statements)

References 36 publications

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“…Beyond these, microsecond electric pulses 22 contribute to the microstructure refinement and strengthening in cast TC4 titanium-based alloy by promoting the formation of new β phase morphology during thermal-hydrogen treatment 23 . Due to the accelerated hydrogen diffusion by introducing electrical free energy, microsecond electric pulses can even be employed for the de-hydrogenation in steels and their ductility recovery under tensile deformation 24 , 25 . Furthermore, low-intensity nanosecond electric pulses can find their biological applications in the modulation of cytoplasmic ion concentration of cancerous cells 26 and the electric excitation of skin neurons 27 .…”

Section: Introductionmentioning

confidence: 99%

Quasi-instantaneous materials processing technology via high-intensity electrical nano pulsing

Olevsky,

Jiang,

et al. 2024

Sci Rep

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Despite many efforts, the outcomes obtained with field-assisted processing of materials still rely on long-term coupling with other electroless processes. This conceals the efficacy and the intrinsic contributions of electric current. A new device utilizing electrical nano pulsing (ENP) has been designed and constructed to bring quasi-instantaneous modifications to the micro- and nano-structure in materials. Featuring ultra-high intensity (~ 1011 A/m2) and ultra-short duration (< 1 μs), the ENP technology activates non-equilibrium structural evolutions at nanometer spatial scale and nanosecond temporal scale. Several examples are provided to demonstrate its utility far outpacing any conventional materials processing technology. The ENP technology gives a practical tool for exploring the intrinsic mechanism of electric-field effects and a pathway towards the rapid industrial manufacturing of materials with unique properties.

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Section: Introductionmentioning

confidence: 99%

Quasi-instantaneous materials processing technology via high-intensity electrical nano pulsing

Olevsky,

Jiang,

et al. 2024

Sci Rep

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“…Electroplating with the modulated DC (direct current) at a specified duty cycle, known as pulse electroplating, is popular for micro electroplating [24]. In pulse electroplating, elimination of the hydrogen embrittlement due to the depletion of cation species in the pulsating diffusion layer improves homogeneity, decreases porosity, and enhances adhesive strength [25,26]. The enhancement of the mechanical characteristics of nickel was also observed when the size of the electroplated nickel structure was reduced [27].…”

Section: Introductionmentioning

confidence: 99%

Design and Fabrication of Micro Saw Enabling Root-Side Cutting of Bone

et al. 2023

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A novel micro saw was fabricated using a combination of photolithography and electroplating techniques, resembling a miniature timing belt with sideways blades. The rotation or oscillation direction of the micro saw is designed to be perpendicular to the cutting direction so that transverse cutting of the bone is attainable to extract a preoperatively planned bone-cartilage donor for osteochondral auto-graft transplantation. The mechanical property of the fabricated micro saw obtained using the nanoindentation test shows that the mechanical properties of the micro saw are almost an order of magnitude higher than bone, which indicates its potential bone-cutting application. To demonstrate the cutting capability of the fabricated micro saw, an in vitro animal bone cutting was performed using a custom test rig consisting of a microcontroller, 3D printer, and other readily available parts.

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Insight into the mechanism of hydrogen permeation inhibition by cerium during electroplating: Enhanced kinetics of hydrogen desorption

Zhang

et al. 2023

International Journal of Hydrogen Energy

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Eliminating reversible hydrogen embrittlement in high-strength martensitic steel by an electric current pulse

Cited by 6 publications

References 36 publications

Quasi-instantaneous materials processing technology via high-intensity electrical nano pulsing

Quasi-instantaneous materials processing technology via high-intensity electrical nano pulsing

Design and Fabrication of Micro Saw Enabling Root-Side Cutting of Bone

Insight into the mechanism of hydrogen permeation inhibition by cerium during electroplating: Enhanced kinetics of hydrogen desorption

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