Ekaterina Korneeva- PhD
- scientific researcher at Joint Institute for Nuclear Research
Ekaterina Korneeva
- PhD
- scientific researcher at Joint Institute for Nuclear Research
About
40
Publications
5,726
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
218
Citations
Introduction
Current institution
Additional affiliations
January 2010 - January 2013
Education
September 2004 - July 2009
Publications
Publications (40)
Engineering active sites to boost the catalytic performance of semiconducting materials is of current interest. Herein, the enhanced hydrogen peroxide (H2O2) production via oxygen (O2) reduction through a surface‐substituting strategy is reported, in which the surface Zn─O bonds are partially halogenated in the one‐step simple calcination process....
The electrolytic glucose oxidation has garnered a great interest in energy-saving hydrogen generation. However, sluggish kinetics of glucose oxidation has been recognized as the primary issue for the poor electrochemical...
Molybdenum disulfide (MoS2) is considered promising noble metal-free catalysts for the hydrogen evolution reaction (HER). Whereas the bulk MoS2 does not exhibit significant activity, the catalytic properties of various nanostructures are noticeable. Therefore we synthesized flower-like molybdenum disulfide with the simple, one-step hydrothermal met...
Depth-resolved Raman piezospectroscopy was used to study residual mechanical stress profiles in polycrystalline silicon and aluminum nitrides irradiated with 710 MeV bismuth ions to fluences of 1×1012, 2×1012, and 1×1013 cm-2. It was found that stress fields of opposite signs are formed in the irradiated Si3N4 layer, separated by a buffer zone loca...
The transition of the A2 phase with random Fe and Cr atoms distribution to the sigma (σ) phase in Fe-46wt.%Cr alloy during isothermal annealing near 655 and 700 ºC is investigated both in the bulk material by in situ neutron diffraction (ND) and on the surface of a sample by X-ray diffraction (XRD) method. Kinetics of the σ-phase formation is quant...
C-containing cermets based on Mo2FeB2–Fe with various Cr concentration were synthesized. The influence of Cr on the phase composition and microstructure of sintered materials was studied. It was shown that an increase in the Cr content in cermet leads to a growth of its amount in ternary boride Mo2FeB2 and carbide Mo2C. It was found that Cr atoms r...
We report the first results of a TEM study of structural changes induced by high energy xenon and bismuth ions in Y4Al2O9 nanoparticles (10 to 100 nm grain size) in the range of electronic stopping powers 6÷35 keV/nm. It was found that swift Xe an Bi ion irradiation, starting from threshold energy loss∼ 8 keV/nm, leads to the formation of continuou...
The morphology and elemental compositions at the surface of poly(styrene sulfonic acid) (PSSA) grafted poly(ethylene‐co‐tetrafluoroethylene) polymer electrolyte membranes (ETFE‐PEMs) in a grafting degree (GD) range of 0%–127% are investigated by using FE‐SEM and XPS analyses. The concentrations of elemental components at the surface are not a linea...
A depth-resolved Raman spectroscopy technique was used to study the residual stress profiles in polycrystalline silicon nitride that was irradiated with Xe (167 MeV, 1 × 1011 cm−2 ÷ 4.87 × 1013 cm−2) and Bi (710 MeV, 1 × 1011 cm−2 ÷ 1 × 1013 cm−2) ions. It was shown that both the compressive and tensile stress fields were formed in the irradiated s...
We report the results of the nanoindentation tests of silicon nitride irradiated with Ar (46 MeV), Kr (107 MeV), Xe (167 MeV, 220 MeV) and Bi 710 MeV ions. The behaviour of hardness with respect to ion fluence was analyzed and correlated with the microstructure evolution examined using transmission electron microscopy. Insignificant changes in hard...
Tribological properties of titanium and alloy Ti6Al4V are changed by the irradiation with 160 MeV swift xenon ions. At the beginning of the tribological test, the friction coefficient of titanium is reduced. As the test of titanium proceeds, an unconventional two-step increase in its value is observed. The irradiation causes oscillating changes in...
![2D evolution of the XRD [(a), (b)] and ND [(c), (d)] patterns during...](publication/344430050/figure/fig2/AS:11431281286791150@1730150607174/2D-evolution-of-the-XRD-a-b-and-ND-c-d-patterns-during-heating-a-c_Q320.jpg)
Comparative in situX-ray and neutron diffraction studies of the phase transitions in a high magnetostriction Fe–27Ga alloy sample have been performed, with heating up to 850°C and subsequent cooling to room temperature. Different structural information (phase content, phase-transition temperatures, unit-cell behaviour) is obtained for the bulk samp...
A new perspective approach to how to create a new and locally nanostructured graphene-based material is reported on. We studied the electric and structural properties for the partially fluorinated graphene (FG) films obtained from a FG-suspension and nanostructured by high-energy Xe ions. Local shock heating in ion tracks is suggested to be the mai...
A planar electrochemical cell developed for operando/in situ neutron diffraction experiments at time-of-flight diffractometers was used to study a structural state of LixNi0.8Co0.15Al0.05O2 (NCA) electrodes with different degree of compaction. A two-phase-separated state of the NCA electrodes was observed in the first charge cycle. It was establish...
Effect of femtosecond laser processing on mechanical properties of plates made of submicrocrystalline VT1-0 titanium alloy is studied using active deformation and fatigue testing involving cantilever bending.
Development of oxide dispersion strengthened (ODS) steels, as candidates for fuel claddings for Gen IV nuclear reactors, requires a comprehensive study of their behaviour under operating conditions. In this work, 1.2 MeV/amu Kr and Xe irradiation was used to simulate fission fragment impact. New irradiation approaches with respect to a non-homogene...
Aim of this report is to compare the morphology of swift (167 and 220 MeV) Xe ion induced latent tracks in Y2Ti2O7 nanoparticles during post-irradiation heat treatment and after irradiation at different temperatures in pre-thinned TEM foils and TEM targets prepared from hundreds microns thick irradiated oxide dispersion strengthened (ODS) steel. No...
The radiation stability of dielectric nanoparticles embedded into a metallic matrix is of considerable practical value due to the growing interest in oxide dispersion strengthened (ODS) steels as promising nuclear reactor materials. In this report the results of a TEM study of structural changes in Cr23C6 and Y-Ti-O nanoparticles in several ODS all...
The article presents the results of a study of the microstructure of Li 1 – x Na x NbO 3 solid solutions
by electron microscopy as a function of the concentration substitution ( x = 0, 2, and 3 mol %). The introduc?
tion of a small amount of sodium niobate leads to considerable changes in the morphology of the crystal. Esti?
mation of the average g...
Femtosecond laser modification of titanium surfaces was performed to produce microstructured hydrophilic and biocompatible surface layers. Biocompatible nano/microcoatings were prepared for the first time by dry femtosecond laser imprinting of hydroxylapatite nano/micropowder onto VT6 titanium surfaces. In these experiments HAP was first deposited...
The thermomechanical stability of nanostructured (NS) commercially pure titanium is studied in the temperature range of 20–600°C using the method of dynamic mechanical analysis. It has been found that the maxima observed in the temperature dependence of the loss angle tangent (t = 350–600°C for the analyzed cyclic loading frequencies of 0.33–10 Hz)...
Questions
Question (1)
I made an indentation test of steel with a maximum load of 100 mH. The loading and unloading rates were 200.00 mN/min and the holding time was 10 s. Some of the obtained curves look a bit strange. In the attachment there is an example. While holding the maximum load it seems like the indenter goes back, resulting in a loop at the curve (it is easy to observe in the enlarged picture). Why does this happen and how it should be taking into account during the hardness calculation?
