Influence of the skin effect of plastic deformation on hydrogen accumulation in metals

Polyanskiy, Vladimir A.; Belyaev, Аlexander K.; Yakovlev, Yu. A.; Polyanskiy, A. M.; Tretyakov, D. A.

doi:10.1063/1.5084357

Cited by 4 publications

(4 citation statements)

References 21 publications

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“…The increase in testing time of specimens in corrosive mediums of equal concentrations does not lead to the growth of cracked layer above a certain level. This result is confirmed by recent studies of the surface effect of hydrogen concentrations in metals [22][23][24][25].…”

Section: ∆A =∆Asurface+ ∆Abulksupporting

confidence: 87%

Investigation of the corrosion process and destruction of metals by using acoustodamage method

et al. 2019

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The paper presents the results of investigation of acoustic anisotropy in industrial alloy made of steel 14HGNDC after hydrogen-induced cracking (HIC) tests according to the standard NACE TM0284-2003. It was found that location and parameters of corrosion cracks with size about 20 microns can be determined by distribution and value of acoustic anisotropy. A quantitative relationship between value of acoustic anisotropy and size of corrosion cracks in the range from 60 to 6600 microns was established. The obtained results have a great importance for improving methods of hydrogen-induced cracking tests and for non-destructive testing of brittle destruction of structures in oil and gas industry by using the acoustodamage method.

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Section: ∆A =∆Asurface+ ∆Abulksupporting

confidence: 87%

Investigation of the corrosion process and destruction of metals by using acoustodamage method

et al. 2019

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“…Here, some widely used insulating substrates for growing 2D GaS and GaSe, including SiO 2 , Al 2 O 3 , mica, SiC, and Si, are selected to test their impacts on the MO Kerr effect. Taken the wavelength of the incident light as 589 nm, the complex refractive indices (i.e., k = + n n i ) of above substrates are 1.544, 1.768, 2.450, 2.647, and 3.973+0.030i, respectively [44]. The Kerr angles of GaS and GaSe MLs versus different substrates are plotted in figures 5(c) and (f), from which one can find that the spectral structures are very similar for all of the substrates, while the Kerr angles are inversely proportional to the modulus of n. Obviously, the largest Kerr angle appears when the SiO 2 substrate having the smallest refractive index is adopted.…”

Section: Mo Kerr and Faraday Effectsmentioning

confidence: 99%

Thickness-dependent magneto-optical effects in hole-doped GaS and GaSe multilayers: a first-principles study

Zhou

Wang

et al. 2018

New J. Phys.

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Recently, two-dimensional (2D) GaS and GaSe nanosheets were successfully fabricated and the measured electronic, mechanical, and optoelectronic properties are excellent. Here, using the firstprinciples density functional theory, we investigate the magnetic, optical, and magneto-optical (MO) Kerr and Faraday effects in hole-doped GaS and GaSe multilayers. GaS and GaSe monolayers (MLs) manifest ferromagnetic ground states by introducing even a small amount of hole doping, whereas the magnetism in GaS and GaSe multilayers are significantly different under hole doping. Our results show that ferromagnetic states can be easily established in GaS bilayers and trilayers under proper hole doping, however, most of GaSe multilayers are more favorable to nonmagnetic states. The magnetic moments in GaS multilayers are weakened remarkably with the increasing of thin film thickness and are negligible more than three MLs. This leads to the thickness dependence of MO Kerr and Faraday effects. Furthermore, the MO effects strongly depend on the doping concentration and therefore are electrically controllable by adjusting the number of holes via gate voltage. The substrate effects on the MO properties are also discussed. Combining the unique MO and other interesting physical properties make GaS and GaSe a superior 2D material platform for semiconductor MO and spintronic nanodevices.

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“…We performed simulations of the extinction spectra based on Mie theory for compositions ranging between 0 and 100% Au, shown in Figure c,d for G0 and G1, respectively, to compare to our synthesized nanoparticles. To do the calculations, we used a previous analytical model to determine the dielectric function for alloy particles, which is not a composition weighted average of those for pure silver and pure gold. , Table shows peak max positions and % Au compositions for all samples along with compositions as determined by EDAX measurements and extracted from the model. When our 25% Au G0 and G1 particles were compared to the model, the measured extinction spectra have lower maximum wavelengths than predicted for 25% Au, suggesting that these particles may contain more silver than expected, which is reflected in the predicted alloy content.…”

Section: Resultsmentioning

confidence: 99%

“…UV–vis extinction spectra of gold–silver alloy and pure gold/silver nanoparticles were simulated by software based on Mie theory, , namely, MiePlot (v 4.6) . The dielectric constants of alloy and pure gold/silver nanoparticles were calculated using a reported model. , …”

Section: Methodsmentioning

confidence: 99%

Two-Step Synthesis of Large Gold–Silver Alloy Nanoparticles via the Combination of Seeded Growth and Citrate Co-reduction

Situ,

Bayram,

Blum

2023

J. Phys. Chem. C

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We report a novel two-step method for the synthesis of uniform quasi-spherical and monodisperse gold–silver alloy nanoparticles with diameters of approximately 80 nm. In step one, gold–silver alloy seeds (G0) with diameters of approximately 30 nm are synthesized by citrate co-reduction of gold acetate and silver nitrate. In step two, the seeds grow into large alloy nanoparticles with diameters of approximately 80 nm by the combination of seeded growth and citrate co-reduction of gold and silver precursors. Our method makes use of gold acetate (rather than chloroauric acid) as a gold precursor to avoid the formation of silver chloride precipitates during synthesis. To our knowledge, we are the first to prepare gold–silver alloy nanoparticles with diameters of above 70 nm using gold acetate as a gold precursor. The alloy seeds and seed-grown nanoparticles show good control of size and composition, which enables tuning of the plasmonic band of these gold–silver alloy nanoparticles. Gold and silver are distributed uniformly within the cores of all Au-Ag alloy nanoparticles, while the surface is enriched in silver. This silver-enriched surface layer is thicker and more prominent for 25% Au alloy nanoparticles than for 50% and 75% Au alloy nanoparticles.

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Influence of the skin effect of plastic deformation on hydrogen accumulation in metals

Cited by 4 publications

References 21 publications

Investigation of the corrosion process and destruction of metals by using acoustodamage method

Investigation of the corrosion process and destruction of metals by using acoustodamage method

Thickness-dependent magneto-optical effects in hole-doped GaS and GaSe multilayers: a first-principles study

Two-Step Synthesis of Large Gold–Silver Alloy Nanoparticles via the Combination of Seeded Growth and Citrate Co-reduction

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