Section of Experimental methods in materials research

The method of confocal laser scanning microscopy (CLSM) has demonstrated significantly higher sensitivity for assessing of corrosion damages than standard gravimetric method. 
Moreover, the CLSM method has enabled to obtain the quantitative assessment of average corrosion rate, as well as localized one.

On the quantitative assessment of corrosion damages of aluminum at the early stages using confocal laser scanning microscopy

The method of confocal laser scanning microscopy (CLSM) has demonstrated significantly higher sensitivity for assessing of corrosion damages than standard gravimetric method. Moreover, the CLSM method has enabled to obtain the quantitative assessment of average corrosion rate, as well as localized one.
V.A. Danilov, D.L. Merson
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Year: 2022 Volume: 12     Issue: 3 Pages: 261-265

the studies carried out show that by varying the nature of the solvent, the concentration and nature of the polymers in the initial solutions, it is possible to control the structure formation in mixed polymer solutions, and, therefore, the properties of the resulting composites.

Experimental evaluation of structure formation in solutions of biopolymer mixtures and prediction of the properties for biomedical materials obtained

the studies carried out show that by varying the nature of the solvent, the concentration and nature of the polymers in the initial solutions, it is possible to control the structure formation in mixed polymer solutions, and, therefore, the properties of the resulting composites.
A.S. Shurshina, V.V. Chernova, M.Yu. Lazdina, A.S. Titlova, E.I. Kulish
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Year: 2022 Volume: 12     Issue: 3 Pages: 209-213

Thermoelectric materials are designed according to thermoelectric characteristics, which require good agreement with the Zeebeck coefficient, electronic conductivity, and thermal conductivity. This paper is presented the comparative data of thermal properties in five compounds of nanocrystalline copper sulfides KxCu1.85S (0<x <0.05) at the temperature zone from 300 K to 700 K. X-ray phase analysis shows a mixture different phases of copper sulfides such as Сu1.85S cubic phase, Cu2S cubic phase, Cu17S9 (Cu1.89S) rhombohedral phase, Cu2S tetragonal phase  in all investigated compounds at room temperature. The sizes of crystallites in the alloys estimated from half-width of X-ray lines are in range from 24 to 90 nm. The thermal conductivity of alloys decreases to 0.2 ÷ 0.6 W K-1m-1 in temperature range of 350 – 700 K due to increasing of the amount of potassium (for x = 0.04, 0.05). This guides the maximum thermoelectric characteristics of the material. The obtained results are important for semiconductor materials used in the field of thermoelectric devices.

Thermal properties of nanocrystalline copper sulfides KxCu1.85S (0 < x < 0.05)

Thermoelectric materials are designed according to thermoelectric characteristics, which require good agreement with the Zeebeck coefficient, electronic conductivity, and thermal conductivity. This paper is presented the comparative data of thermal properties in five compounds of nanocrystalline copper sulfides KxCu1.85S (0<x <0.05) at the temperature zone from 300 K to 700 K. X-ray phase analysis shows a mixture different phases of copper sulfides such as Сu1.85S cubic phase, Cu2S cubic phase, Cu17S9 (Cu1.89S) rhombohedral phase, Cu2S tetragonal phase in all investigated compounds at room temperature. The sizes of crystallites in the alloys estimated from half-width of X-ray lines are in range from 24 to 90 nm. The thermal conductivity of alloys decreases to 0.2 ÷ 0.6 W K-1m-1 in temperature range of 350 – 700 K due to increasing of the amount of potassium (for x = 0.04, 0.05). This guides the maximum thermoelectric characteristics of the material. The obtained results are important for semiconductor materials used in the field of thermoelectric devices.
K.A. Kuterbekov, M.K. Balapanov, M.M. Kubenova, R.S. Palymbetov, R.K. Ishembetov, S.M. Sakhabayeva, A.M. Kabyshev, B.M. Akhmetgaliev, K.Z. Bekmyrza, Y.T. Abseitov, S.G. Giniyatova
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Year: 2022 Volume: 12     Issue: 3 Pages: 191-196


It is shown that radial-shear rolling makes it possible to form a gradient structure in the 58Ni-Cr-Mo-B-Al-Cu superalloy billet.  In which the recrystallized grains size of the γ-phase in the radial direction from coarse-grained (34.1 ± 4.7 μm) in the center to ultrafine-grained (2.4 ± 1.7 μm ) in the surface layers of the billet cross-section. This leads to a gradient change in microhardness. The microhardness value is 3.3 GPa in the billet center, and the microhardness increases to 5.4 GPa in the peripheral near-surface zone.

The influence of radial shear rolling on the structure and properties of 58Ni-Cr-Mo-B-Al-Cu superalloy

It is shown that radial-shear rolling makes it possible to form a gradient structure in the 58Ni-Cr-Mo-B-Al-Cu superalloy billet. In which the recrystallized grains size of the γ-phase in the radial direction from coarse-grained (34.1 ± 4.7 μm) in the center to ultrafine-grained (2.4 ± 1.7 μm ) in the surface layers of the billet cross-section. This leads to a gradient change in microhardness. The microhardness value is 3.3 GPa in the billet center, and the microhardness increases to 5.4 GPa in the peripheral near-surface zone.
A.A. Bikmukhametova, E.V. Galieva, I.S. Valeev, E.Y. Klassman, I.I. Musabirov, V.A. Valitov
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Year: 2021 Volume: 11     Issue: 4s Pages: 566-570

Microstructure of cemented carbide. Ellipse marks the example of the analyzed “island” Co grains. CW and PW mark the example of WC/WC GBs completely and partially wetted by a Co binder. IA and OA are incoming and outcoming angles in the cobalt binder.

Computer analysis of the cemented carbides’ microstructure

Microstructure of cemented carbide. Ellipse marks the example of the analyzed “island” Co grains. CW and PW mark the example of WC/WC GBs completely and partially wetted by a Co binder. IA and OA are incoming and outcoming angles in the cobalt binder.
D.G. Kagramanyan, E.P. Konstantinova, A.N. Nekrasov, B.B. Straumal, I.Y. Konyashin, L.N. Shchur
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Year: 2021 Volume: 11     Issue: 4 Pages: 447-451

From the interpretation of the obtained XPS- and NEXAFS 2p-spectra of atoms in Co-doped CaCu3Ti4O12 and the corresponding oxides it was concluded that in ceramics the copper and calcium atoms have a charge state of +2, the titanium atoms have a slightly lower charge than +4, and cobalt atoms have mainly a charge of +2 with some fraction of Co(III) ions in the high spin state.

Spectroscopic study of Co-doped CaCu3Ti4O12

From the interpretation of the obtained XPS- and NEXAFS 2p-spectra of atoms in Co-doped CaCu3Ti4O12 and the corresponding oxides it was concluded that in ceramics the copper and calcium atoms have a charge state of +2, the titanium atoms have a slightly lower charge than +4, and cobalt atoms have mainly a charge of +2 with some fraction of Co(III) ions in the high spin state.
N.A. Zhuk, E.U. Ipatova, B.A. Makeev, S.V. Nekipelov, A.V. Koroleva, L.A. Koksharova, R.I. Korolev
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Year: 2021 Volume: 11     Issue: 4 Pages: 386-391


Prediction exactly of the failure zone in Lead rupture within the same non-homogeneous zone  previously detected exactly using Scanning Contact Potentiometry technique,which was done in the elastic mode before conducting the tensile test.

Experimental prediction of lead failure under tensile load using scanning contact potentiometry technique

Prediction exactly of the failure zone in Lead rupture within the same non-homogeneous zone previously detected exactly using Scanning Contact Potentiometry technique,which was done in the elastic mode before conducting the tensile test.
A.A. Abu Ghazal, Y.N. Husein, V.I. Surin, S.A. Alkhdour, G.H. Al-Malkawi
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Year: 2021 Volume: 11     Issue: 3 Pages: 249-253



The use of such lubricant SM6 (L6) in the manufacture of rope increases the durability of the rope at positive temperatures in relation to the unsmained rope by 2.2 times, and at a temperature of 60 degrees C the durability of the rope, soaked in this lubricant, lower than the unsubstuded (dry) rope.

Tests of low-temperature properties of rope lubricant

The use of such lubricant SM6 (L6) in the manufacture of rope increases the durability of the rope at positive temperatures in relation to the unsmained rope by 2.2 times, and at a temperature of 60 degrees C the durability of the rope, soaked in this lubricant, lower than the unsubstuded (dry) rope.
V.Y. Sholom, O.L. Kramer, V.P. Golovin, A.N. Abramov, R.F. Vagapov
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Year: 2021 Volume: 11     Issue: 2 Pages: 187-191


The relation of the coefficient n in the equation hmax=1/nπ ((K1C (KC ))/σ0.2 )2 (where hmax is the maximum depth of the plastic zone under the fracture surface) with the criterion of the local stress state hmax/t for CG and UFG materials with BCC, FCC and HCP lattice when testing samples for static crack resistance

Determination of static fracture toughness of coarse-grained and ultrafine-grained materials by the depth of the plastic zone under the fractures surface

The relation of the coefficient n in the equation hmax=1/nπ ((K1C (KC ))/σ0.2 )2 (where hmax is the maximum depth of the plastic zone under the fracture surface) with the criterion of the local stress state hmax/t for CG and UFG materials with BCC, FCC and HCP lattice when testing samples for static crack resistance
G.V. Klevtsov, R.Z. Valiev, N.A. Klevtsova, I.N. Pigaleva
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Year: 2021 Volume: 11     Issue: 1 Pages: 45-49




Dependences of the eddy current device readings α at different frequencies on the number of loading cycles N, measured within contact spots after contact fatigue tests of the cobalt-nickel-chromium PG-10K-01 coating

Features of eddy-current testing of the fatigue degradation of laser clad cobalt-nickel-chromium coating under contact loading

Dependences of the eddy current device readings α at different frequencies on the number of loading cycles N, measured within contact spots after contact fatigue tests of the cobalt-nickel-chromium PG-10K-01 coating
R.A. Savrai, L.K. Kogan, A.V. Makarov, N.N. Soboleva
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Year: 2020 Volume: 10     Issue: 3 Pages: 315-321

Shows the effect of friction force on energy-power parameters and deformation before fracture under lug billet in strips of aluminum alloy Al-31.  The effect of fragmentation on the degree of deformation strain before breaking down and the voltage drawn under different conditions of friction between the workpiece and the cutting tool.

Stand resource tests of steel ropes

Shows the effect of friction force on energy-power parameters and deformation before fracture under lug billet in strips of aluminum alloy Al-31. The effect of fragmentation on the degree of deformation strain before breaking down and the voltage drawn under different conditions of friction between the workpiece and the cutting tool.
A.N. Abramov, V.Y. Sholom, O.L. Kramer Olga, V.P. Golovin
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Year: 2020 Volume: 10     Issue: 2 Pages: 195-199

The structure of CaCu3Ti4O12 equivalent circuit reveals three processes possible within the material – reach-through conductivity and two overlapping polarization processes – electronic and dipole relaxation ones. Temperature dependencies of specific conductivity in the Arrhenius scale for CaCu3Ti4O12 samples of different thicknesses are linear and characterized by activation energy of 1.05 eV. Temperature dependencies of electric parameters of samples are at their minimums at T = 350 C, which can be explained by the changed polarization mechanism.

Impedance spectroscopy of СaCu3Ti4O12

The structure of CaCu3Ti4O12 equivalent circuit reveals three processes possible within the material – reach-through conductivity and two overlapping polarization processes – electronic and dipole relaxation ones. Temperature dependencies of specific conductivity in the Arrhenius scale for CaCu3Ti4O12 samples of different thicknesses are linear and characterized by activation energy of 1.05 eV. Temperature dependencies of electric parameters of samples are at their minimums at T = 350 C, which can be explained by the changed polarization mechanism.
N.A. Sekushin, L.A. Koksharova, N.A. Zhuk
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Year: 2020 Volume: 10     Issue: 1 Pages: 72-77

In the alloy containing the LPSO phase, using the acoustic emission method, it was possible to identify and trace the kinetics of the development of three simultaneously occurring accommodative deformation mechanisms: basic dislocation slip, nucleation and growth of discharge bands.

Acoustic emission study of the kinetics of kink bands in the LPSO structure

In the alloy containing the LPSO phase, using the acoustic emission method, it was possible to identify and trace the kinetics of the development of three simultaneously occurring accommodative deformation mechanisms: basic dislocation slip, nucleation and growth of discharge bands.
A.Y. Vinogradov, E.V. Vasilev, A.I. Brilevsky, D.L. Merson, K.K. Kudasheva
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Year: 2019 Volume: 9     Issue: 4 Pages: 504-508


The analysis of the NEXAFS Co2p-spectra of cobalt-containing solid solutions and cobalt oxides revealed that the studied Co atoms were mainly in the +2 and +3 oxidation state, which correlates well with the magnetochemical study data.

Magnetic properties and NEXAFS-spectroscopy of Co-doped ferroelectric ceramic Bi5Nb3O15

The analysis of the NEXAFS Co2p-spectra of cobalt-containing solid solutions and cobalt oxides revealed that the studied Co atoms were mainly in the +2 and +3 oxidation state, which correlates well with the magnetochemical study data.
N.A. Zhuk, S.V. Nekipelov, D.S. Beznosikov, L.V. Rychkova, M.V. Yermolina, B.A. Makeev
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Year: 2019 Volume: 9     Issue: 4 Pages: 405-408

The study of the magnetic susceptibility of iron-doped solid solutions with layered perovskite-like structure has been established the influence of atoms of the second coordination sphere on the degree of aggregation and the nature of exchange interactions in the exchange-bound clusters containing Fe(III) atoms.

Influence of alkaline earth metal atoms on magnetic properties of Bi2MNb2−2xFe2xO9−δ (M — Ba, Sr, Ca)

The study of the magnetic susceptibility of iron-doped solid solutions with layered perovskite-like structure has been established the influence of atoms of the second coordination sphere on the degree of aggregation and the nature of exchange interactions in the exchange-bound clusters containing Fe(III) atoms.
N.A. Zhuk, L.O. Karlova, B.A. Makeev
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Year: 2019 Volume: 9     Issue: 3 Pages: 322-327

Shows the effect of friction force on energy-power parameters and deformation before fracture under lug billet in strips of aluminum alloy Al-31.  The effect of fragmentation on the degree of deformation strain before breaking down and the voltage drawn under different conditions of friction between the workpiece and the cutting tool.

Enhancing the technological plasticity of the AlMgSi0.5 alloy strips when drawing in a rolling die

Shows the effect of friction force on energy-power parameters and deformation before fracture under lug billet in strips of aluminum alloy Al-31. The effect of fragmentation on the degree of deformation strain before breaking down and the voltage drawn under different conditions of friction between the workpiece and the cutting tool.
A.N. Abramov, A.V. Botkin, V.Y. Sholom, E.V. Varenik, K.A. Abramov
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Year: 2019 Volume: 9     Issue: 3 Pages: 276-281

At present work established that, depending on the direction of scratching, the hardness and the AE power exhibit opposite trends, both following the anisotropic properties of a cubic crystal lattice. It is shown that the direction of scratching affects not only the energy of the AE signal, but also its spectral characteristics.

Anisotropy of the acoustic emission signal on scratch testing of a single crystal of aluminum

At present work established that, depending on the direction of scratching, the hardness and the AE power exhibit opposite trends, both following the anisotropic properties of a cubic crystal lattice. It is shown that the direction of scratching affects not only the energy of the AE signal, but also its spectral characteristics.
A.V. Danyuk, M.A. Afanasiev, D.L. Merson, A.Y. Vinogradov
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Year: 2019 Volume: 9     Issue: 1 Pages: 130-135

The dependence of complex viscosity of a melt of mix PP with HDPE-20 (1) and LDPE-276 (2) defined with a frequency of oscillation of 0,1 Hertz  on a ratio of polymers in mix.

Assessment of rheological behavior of secondary polymeric raw materials in the conditions corresponding to processing of polymers by method of extrusion and injection molding

The dependence of complex viscosity of a melt of mix PP with HDPE-20 (1) and LDPE-276 (2) defined with a frequency of oscillation of 0,1 Hertz on a ratio of polymers in mix.
R.Y. Lazdin, V.P. Zakharov, A.S. Shurshina, E.I. Kulish
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Year: 2019 Volume: 9     Issue: 1 Pages: 70-74

investigation of the destruction of steel AISI 316 by electron microscopy and SCP methods. To confirm the results obtained by the methods of structural analysis, methods of measuring microhardness and roughness were also used.

Experimental investigation of the failure of steel AISI 316 by the methods of structural analyses

investigation of the destruction of steel AISI 316 by electron microscopy and SCP methods. To confirm the results obtained by the methods of structural analysis, methods of measuring microhardness and roughness were also used.
A.A. Abu Ghazal, P.S. Dzhumaev, A.V. Osintsev, V.I. Polsky, V.I. Surin
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Year: 2019 Volume: 9     Issue: 1 Pages: 33-38



The research of dispersed precipitates in high-strength medium-carbon steel after tempering in the temperature range up to 600 °C was carried out. Amount of retained austenite decreases and cementite is forming instead of austenite by growth of the tempering temperature.

Multimethodological approach to the study of carbide particle dimensions in high-strength steel

The research of dispersed precipitates in high-strength medium-carbon steel after tempering in the temperature range up to 600 °C was carried out. Amount of retained austenite decreases and cementite is forming instead of austenite by growth of the tempering temperature.
M.L. Fedoseev, S.N. Petrov, A.K. Islamov, N.F. Drozdova, T.A. Lychagina, D.I. Nikolaev
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Year: 2018 Volume: 8     Issue: 3 Pages: 323-328

The function of the force parameters (axial force and torque) recorded in the experiment and the preset kinematic parameters (the rate of tension and the torsional velocity), the strain rate sensitivity coefficient and the approach angle between the stress vectors and the strain rate on the specimen surface under complex loading.

On tension-torsion testing of solid cylindrical specimens

The function of the force parameters (axial force and torque) recorded in the experiment and the preset kinematic parameters (the rate of tension and the torsional velocity), the strain rate sensitivity coefficient and the approach angle between the stress vectors and the strain rate on the specimen surface under complex loading.
R.M. Kashaev
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Year: 2018 Volume: 8     Issue: 3 Pages: 346-352



On the original laboratory bench, which allows to simulate the technological cooling rates of hot-rolled sheets in the process of controlled thermomechanical processing, the thermal effect of bainitic transformation in low-carbon low-alloy tube steel 06G2MB type is determined.

Thermal effect of bainitic transformation in tube steel by accelerated cooling

On the original laboratory bench, which allows to simulate the technological cooling rates of hot-rolled sheets in the process of controlled thermomechanical processing, the thermal effect of bainitic transformation in low-carbon low-alloy tube steel 06G2MB type is determined.
M.L. Lobanov, G.M. Rusakov, V.N. Urtsev, M.L. Krasnov, E.D. Mokshin, A.V. Shmakov, S.I. Platov
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Year: 2018 Volume: 8     Issue: 3 Pages: 246-251


Metallographic methods were used to study the viscous character of the deformation in the regions of strong localized flow, including Roaldite (Fe, Ni) 4N plates in the alpha (Fi, Ni) meteorite of the Sikhote-Alin meteorite.

Analysis of structural changes and phase transformations in Sikhote-Alin IIAB iron meteorite under various origin shock deformation

Metallographic methods were used to study the viscous character of the deformation in the regions of strong localized flow, including Roaldite (Fe, Ni) 4N plates in the alpha (Fi, Ni) meteorite of the Sikhote-Alin meteorite.
R.F. Muftakhetdinova, V.I. Grokhovsky, G.A. Yakovlev
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Year: 2018 Volume: 8     Issue: 1 Pages: 54-58

Field neon image atomic clean and atomic smooth the surface of platinum single crystal before irradiation, with the corresponding stereographic projection.

By irradiation of the single crystal Pt beams of charged Ar+ ions are able to obtain nano-structured state of the material under certain modes in the near-surface volume of the nano meter range.

Field ion microscopy of nanoblocks on the surface of metals after irradiation argon ion beams

Field neon image atomic clean and atomic smooth the surface of platinum single crystal before irradiation, with the corresponding stereographic projection. By irradiation of the single crystal Pt beams of charged Ar+ ions are able to obtain nano-structured state of the material under certain modes in the near-surface volume of the nano meter range.
V.A. Ivchenko
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Year: 2018 Volume: 8     Issue: 1 Pages: 48-53


Many questions remain open in the understanding the role of microstructural factors in the acoustic emission (AE) phenomenon occurring in deforming materials. A comparative analysis of AE time parameters in tensile testing of pure aluminum, copper, silver and nickel specimens having very different values of stacking fault energy (SFE) was undertaken in the present work to clarify the SFE effect on the AE signal. Continuous digital wideband recording was used for AE waveform registration, which offers the possibility to avoid the threshold discriminators and to analyze a continuous AE signal generated during plastic deformation mediated by dislocation mechanisms. The power of the AE signal were selected as the descriptive parameters. Following the evolution of dislocation structures, the AE energy parameters were demonstrated to have a similar behavior in all investigated materials, i.e. the AE level increases sharply at the onset of plastic flow and then decays gradually during the uniform strain hardening stage. However, the absolute values of the AE amplitude and energy differ significantly depending on SFE. It was shown unambiguously that in contrast to expectations, the AE energy parameters reduce as the SFE value increases. This effect is discussed qualitatively in terms of the features of dislocation behavior, which are governed by the SFE value.

The effect of stacking fault energy on acoustic emission in pure metals with face-centered crystal lattice

Many questions remain open in the understanding the role of microstructural factors in the acoustic emission (AE) phenomenon occurring in deforming materials. A comparative analysis of AE time parameters in tensile testing of pure aluminum, copper, silver and nickel specimens having very different values of stacking fault energy (SFE) was undertaken in the present work to clarify the SFE effect on the AE signal. Continuous digital wideband recording was used for AE waveform registration, which offers the possibility to avoid the threshold discriminators and to analyze a continuous AE signal generated during plastic deformation mediated by dislocation mechanisms. The power of the AE signal were selected as the descriptive parameters. Following the evolution of dislocation structures, the AE energy parameters were demonstrated to have a similar behavior in all investigated materials, i.e. the AE level increases sharply at the onset of plastic flow and then decays gradually during the uniform strain hardening stage. However, the absolute values of the AE amplitude and energy differ significantly depending on SFE. It was shown unambiguously that in contrast to expectations, the AE energy parameters reduce as the SFE value increases. This effect is discussed qualitatively in terms of the features of dislocation behavior, which are governed by the SFE value.
A. Danyuk, D. Merson, I. Yasnikov, E. Agletdinov, M. Afanasyev, A. Vinogradov
Year: 2017 Volume: 7     Issue: 4 Pages: 437-441

The microstructure and local mechanical properties of zones of 12Cr18Ni10Ti steel and a titanium alloy VT1-0 with an intermediate copper insert joint were carried out. The stress–strain diagrams for zones of the joint are received using the original technique for determining coefficients of the “stress–strain” diagram.

The laser-welded joint of an austenitic corrosion-resistant steel and a titanium alloy with an intermediate copper insert

The microstructure and local mechanical properties of zones of 12Cr18Ni10Ti steel and a titanium alloy VT1-0 with an intermediate copper insert joint were carried out. The stress–strain diagrams for zones of the joint are received using the original technique for determining coefficients of the “stress–strain” diagram.
I. Veretennikova, N. Pugacheva, E. Smirnova, N. Michurov
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Year: 2018 Volume: 8     Issue: 1 Pages: 42-47

In this paper, we present a method for processing an acoustic emission signal using a discrete wavelet transform. The figure shows an example of an acoustic emission signal and strain hardening curve obtained from an aluminum alloy under tensile loading.

Investigation of plastic deformation of aluminum alloys using wavelet transforms of acoustic emission signals

In this paper, we present a method for processing an acoustic emission signal using a discrete wavelet transform. The figure shows an example of an acoustic emission signal and strain hardening curve obtained from an aluminum alloy under tensile loading.
A. Dmitriev, V. Polyakov, A.A. Lependin
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Year: 2018 Volume: 8     Issue: 1 Pages: 33-36

Method of CCT diagram plotting based on the numerical analysis of dilatometric tests results. Dependence of the CTE of austenite and its decomposition products from the range of cooling rates clearly defines critical cooling rate and phase transformation ranges.

CCT diagram plotting based on the numerical analysis of dilatometric tests results

Method of CCT diagram plotting based on the numerical analysis of dilatometric tests results. Dependence of the CTE of austenite and its decomposition products from the range of cooling rates clearly defines critical cooling rate and phase transformation ranges.
I. Teplukhina, V. Golod, A. Tsvetkov
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Year: 2018 Volume: 8     Issue: 1 Pages: 37-41


The electric properties of Bi5Nb3O15 bismuth niobate polycrystalline samples and chromium-containing solid solutions Bi5Nb3-3хCr3хO15-δ (х≤0.08) were studied using impedance spectroscopy.On the grounds of the performed researches the conclusion about the electron-ionic character of conductivity of solid solutions Bi5Nb3-3хCr3хO15-δ was made.

ELECTRICAL PROPERTIES OF Bi5Nb3-3xCr3xO15-δ CHARACTERIZED BY IMPEDANCE SPECTROSCOPY

The electric properties of Bi5Nb3O15 bismuth niobate polycrystalline samples and chromium-containing solid solutions Bi5Nb3-3хCr3хO15-δ (х≤0.08) were studied using impedance spectroscopy.On the grounds of the performed researches the conclusion about the electron-ionic character of conductivity of solid solutions Bi5Nb3-3хCr3хO15-δ was made.
N.A. Sekushin, N.A. Zhuk, E.A. Belyaeva, V.A. Belyj, V.E. Grass, M.V. Ermolina
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Year: 2017 Volume: 7     Issue: 4 Pages: 393-397





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