115 research outputs found
Cooperative localization-delocalization in the high Tc cuprates
The intrinsic metastable crystal structure of the cuprates results in local
dynamical lattice instabilities, strongly coupled to the density fluctuations
of the charge carriers. They acquire in this way simultaneously both,
delocalized and localized features. It is responsible for a partial fractioning
of the Fermi surface, i.e., the Fermi surface gets hidden in a region around
the anti-nodal points, because of the opening of a pseudogap in the normal
state, arising from a partial charge localization. The high energy localized
single-particle features are a result of a segregation of the homogeneous
crystal structure into checker-board local nano-size structures, which breaks
the local translational and rotational symmetry. The pairing in such a system
is dynamical rather than static, whereby charge carriers get momentarily
trapped into pairs in a deformable dynamically fluctuating ligand environment.
We conclude that the intrinsically heterogeneous structure of the cuprates must
play an important role in this type of superconductivity.Comment: 14 pages, 8 figures, Proceedings of the "International Conference on
Condensed Matter Theories", Quito, 2009 Int. J. Mod. Phys. B 2010 (Accepted
Superconductivity in charge Kondo systems
We present a theory of superconductivity in charge Kondo systems, materials
with resonant quantum valence fluctuations, in the regime where the transition
temperature is comparable to the charge Kondo resonance. We find
superconductivity induced by charge Kondo impurities, study how pairing of a
superconducting host is enhanced due to charge Kondo centers and investigate
the interplay between Kondo-scattering and inter-impurity Josephson coupling.
We discuss the implications of our theory for Tl-doped PbTe, which has recently
been identified as a candidate charge Kondo system.Comment: 4 pages, 4 figures; revised version; detailed discussion on the
physics of Tl-doped PbTe adde
Charge Kondo anomalies in PbTe doped with Tl impurities
We investigate the properties of PbTe doped with a small concentration of
Tl impurities acting as acceptors and described by Anderson impurities with
negative onsite correlation energy. We use the numerical renormalization group
method to show that the resulting charge Kondo effect naturally accounts for
the unusual low temperature and doping dependence of normal state properties,
including the self-compensation effect in the carrier density and the
non-magnetic Kondo anomaly in the resistivity. These are found to be in good
qualitative agreement with experiment. Our results for the Tl s-electron
spectral function provide a new interpretation of point contact data.Comment: 5 pages, 3 figures; published versio
Sedimentation of Ultradispersed Diamonds in the Citrate Copper-Plating Electrolyte
AbstractβThe aggregation and sedimentation of ultradispersed diamonds (UDDs) in a citrate copper-plating electrolyte (CCPE) used to fabricate composite electrochemical coatings are investigated. The sedimentation and aggregation stability is investigated in order to select the UDD concentration in the CCPE. This is necessary to fabricate composite copper coatings with improved operational characteristics (increased hardness, wear resistance, and corrosion resistance), as well as impart them new properties (antifriction and catalytic). The UDD content in the electrolyte varies in limits from 0.2 to 2.0 g/L. The size distribution of the UDD particles in the electrolyte immediately after the suspension preparation and after the 10-day holding is determined using a Malvern Mastersizer 2000 laser diffraction analyzer. The aggregation and sedimentation stability of the UDD suspension in the CCPE is investigated by the gravimetric method with the continuous weighing of a quartz small cap immersed into this suspension. The quartz cap is associated with a Sartorius R200D analytical balance with the help of a quartz wire. The experimentally determined time dependence of the weight of settling UDD particles is Q = f(t). The relative size distribution of the particles is determined from this dependence. It is established that the sedimentation stability is substantially affected by the aggregation of the particles, the intensity of which increases with an increase in the UDD concentration. The results satisfying the requirements on the aggregation and sedimentation stability are found for the UDD suspension in the CCPE with a concentration of 1.0 g/L. In this case, the high content of the dispersed phase is combined with aggregation and sedimentation stability, which makes it possible to fabricate copper composite coatings with improved operational properties. Β© 2019, Allerton Press, Inc
Optimization of PET ion-track membranes parameters
Nowadays polymer ion-track membranes are used for a wide range of practical applications, which include various levels of filtration (micro-, ultra-, nanofiltration and osmosis), the creation of flexible electronic circuits and sensors based on polymer substrate, and using as templates for shape-controlled nanostructures synthesis. New applications demand clear understanding of the processes that occur during track membranes formation. For high-precision control of the end-product parameters, it is necessary to establish the correlation between etching conditions and track membranes characteristics (pores dimensions, porosity and membranes thicknesses). For this purpose, in the paper it is considered the technique of membranes formation with 10 nm - 10 ΞΌm cylindrical pores and correlation between their parameters and processing modes is studied. Β© 2019 Elsevier Ltd
ΠΠ»ΠΈΡΠ½ΠΈΠ΅ ΡΠΈΡΡΠ°ΡΠ½ΠΎΠ³ΠΎ ΡΠ»Π΅ΠΊΡΡΠΎΠ»ΠΈΡΠ° ΠΌΠ΅Π΄Π½Π΅Π½ΠΈΡ, Π΅Π³ΠΎ ΠΊΠΎΠΌΠΏΠΎΠ½Π΅Π½ΡΠΎΠ² ΠΈ Π΄ΠΎΠ±Π°Π²ΠΎΠΊ ΡΠ»ΡΡΡΠ°Π΄ΠΈΡΠΏΠ΅ΡΡΠ½ΡΡ Π°Π»ΠΌΠ°Π·ΠΎΠ² Π½Π° ΠΏΠΎΠ²Π΅ΡΡ Π½ΠΎΡΡΠ½ΡΠ΅ ΡΠ²ΠΎΠΉΡΡΠ²Π° ΡΡΠ°Π»ΠΈ
The state of the steel substrate (steel 3) was studied before the application of composite copper coatings from citrate copper-plating electrolyte. The properties of steel base in the investigated copper-plating electrolyte with the addition of ultradispersed diamonds (UDD) have been studied. A component-by-component analysis of the citrate copper-plating electrolyte was carried out, and the effect of each component on the properties of the steel electrode was evaluated. The possibility of using the considered electrolyte for coating directly on steel is shown, which significantly distinguishes it from currently used ethylenediamine, pyrophosphate, acid and other electrolytes. Electrochemical impedance spectroscopy and cathodic polarization were used as research methods. It was found that the lowest resistance of the steel surface (about 15 Ξ©) corresponded to the sample immersed in citrate copper-plating electrolyte with the addition of 1.0 g/l of UDD. Diffusion current density for suspensions with 1.0 g/l UDD in citrate copper-plating electrolyte was 2.6 A/dm2. Ultradispersed diamonds in citrate copper-plating electrolyte shielded the surface of the steel sample, while reducing the total resistance of the passive layer of steel 3. Equivalent electrical circuits of the surface of steel samples immersed in citrate copper-plating electrolyte and its components are also presented. Β ΠΡΠΎΠ²Π΅Π΄Π΅Π½Ρ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ ΡΠΎΡΡΠΎΡΠ½ΠΈΡ ΡΡΠ°Π»ΡΠ½ΠΎΠΉ ΠΏΠΎΠ΄Π»ΠΎΠΆΠΊΠΈ (Π‘Ρ 3) ΠΏΠ΅ΡΠ΅Π΄ Π½Π°Π½Π΅ΡΠ΅Π½ΠΈΠ΅ΠΌ ΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡΠΈΠΎΠ½Π½ΡΡ
ΠΌΠ΅Π΄Π½ΡΡ
ΠΏΠΎΠΊΡΡΡΠΈΠΉ ΠΈΠ· ΡΠΈΡΡΠ°ΡΠ½ΠΎΠ³ΠΎ ΡΠ»Π΅ΠΊΡΡΠΎΠ»ΠΈΡΠ° ΠΌΠ΅Π΄Π½Π΅Π½ΠΈΡ. ΠΠ·ΡΡΠ΅Π½Ρ ΡΠ²ΠΎΠΉΡΡΠ²Π° ΡΡΠ°Π»ΡΠ½ΠΎΠΉ ΠΎΡΠ½ΠΎΠ²Ρ Π² ΠΈΡΡΠ»Π΅Π΄ΡΠ΅ΠΌΠΎΠΌ ΡΠ»Π΅ΠΊΡΡΠΎΠ»ΠΈΡΠ΅ ΠΌΠ΅Π΄Π½Π΅Π½ΠΈΡ Ρ Π΄ΠΎΠ±Π°Π²ΠΊΠΎΠΉ ΡΠ»ΡΡΡΠ°Π΄ΠΈΡΠΏΠ΅ΡΡΠ½ΡΡ
Π°Π»ΠΌΠ°Π·ΠΎΠ² (Π£ΠΠ). ΠΡΠΎΠ²Π΅Π΄Π΅Π½ ΠΏΠΎΠΊΠΎΠΌΠΏΠΎΠ½Π΅Π½ΡΠ½ΡΠΉ Π°Π½Π°Π»ΠΈΠ· ΡΠΈΡΡΠ°ΡΠ½ΠΎΠ³ΠΎ ΡΠ»Π΅ΠΊΡΡΠΎΠ»ΠΈΡΠ° ΠΌΠ΅Π΄Π½Π΅Π½ΠΈΡ ΠΈ ΠΎΡΠ΅Π½Π΅Π½ΠΎ Π²Π»ΠΈΡΠ½ΠΈΠ΅ ΠΊΠ°ΠΆΠ΄ΠΎΠ³ΠΎ ΠΊΠΎΠΌΠΏΠΎΠ½Π΅Π½ΡΠ° Π½Π° ΡΠ²ΠΎΠΉΡΡΠ²Π° ΡΡΠ°Π»ΡΠ½ΠΎΠ³ΠΎ ΡΠ»Π΅ΠΊΡΡΠΎΠ΄Π°. ΠΠΎΠΊΠ°Π·Π°Π½Π° Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡΡ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΡ ΡΠ°ΡΡΠΌΠ°ΡΡΠΈΠ²Π°Π΅ΠΌΠΎΠ³ΠΎ ΡΠ»Π΅ΠΊΡΡΠΎΠ»ΠΈΡΠ° Π΄Π»Ρ Π½Π°Π½Π΅ΡΠ΅Π½ΠΈΡ ΠΏΠΎΠΊΡΡΡΠΈΠΉ Π½Π΅ΠΏΠΎΡΡΠ΅Π΄ΡΡΠ²Π΅Π½Π½ΠΎ Π½Π° ΡΡΠ°Π»Ρ, ΡΡΠΎ Π·Π½Π°ΡΠΈΡΠ΅Π»ΡΠ½ΠΎ ΠΎΡΠ»ΠΈΡΠ°Π΅Ρ Π΅Π³ΠΎ ΠΎΡ ΠΈΡΠΏΠΎΠ»ΡΠ·ΡΠ΅ΠΌΡΡ
Π² Π½Π°ΡΡΠΎΡΡΠ΅Π΅ Π²ΡΠ΅ΠΌΡ ΡΡΠΈΠ»Π΅Π½Π΄ΠΈΠ°ΠΌΠΈΠ½ΠΎΠ²ΡΡ
, ΠΏΠΈΡΠΎΡΠΎΡΡΠ°ΡΠ½ΡΡ
, ΠΊΠΈΡΠ»ΠΎΡΠ½ΡΡ
ΠΈ Π΄ΡΡΠ³ΠΈΡ
ΡΠ»Π΅ΠΊΡΡΠΎΠ»ΠΈΡΠΎΠ². Π ΠΊΠ°ΡΠ΅ΡΡΠ²Π΅ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠ² ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ ΠΏΡΠΈΠΌΠ΅Π½ΡΠ»ΠΈ ΡΠ»Π΅ΠΊΡΡΠΎΡ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΡΡ ΠΈΠΌΠΏΠ΅Π΄Π°Π½ΡΠ½ΡΡ ΡΠΏΠ΅ΠΊΡΡΠΎΡΠΊΠΎΠΏΠΈΡ ΠΈ ΠΊΠ°ΡΠΎΠ΄Π½ΡΡ ΠΏΠΎΠ»ΡΡΠΈΠ·Π°ΡΠΈΡ. Π£ΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½ΠΎ, ΡΡΠΎ Π½Π°ΠΈΠΌΠ΅Π½ΡΡΠ΅Π΅ ΡΠΎΠΏΡΠΎΡΠΈΠ²Π»Π΅Π½ΠΈΠ΅ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ ΡΡΠ°Π»ΠΈ (ΠΎΠΊΠΎΠ»ΠΎ 15 ΠΠΌ) ΠΎΡΠ²Π΅ΡΠ°Π»ΠΎ ΠΎΠ±ΡΠ°Π·ΡΡ, ΠΏΠΎΠ³ΡΡΠΆΠ΅Π½Π½ΠΎΠΌΡ Π² ΡΠΈΡΡΠ°ΡΠ½ΡΠΉ ΡΠ»Π΅ΠΊΡΡΠΎΠ»ΠΈΡ ΠΌΠ΅Π΄Π½Π΅Π½ΠΈΡ Ρ Π΄ΠΎΠ±Π°Π²Π»Π΅Π½ΠΈΠ΅ΠΌ 1,0 Π³/Π» Π£ΠΠ. ΠΠΈΡΡΡΠ·ΠΈΠΎΠ½Π½Π°Ρ ΠΏΠ»ΠΎΡΠ½ΠΎΡΡΡ ΡΠΎΠΊΠ° Π΄Π»Ρ ΡΡΡΠΏΠ΅Π½Π·ΠΈΠΉ Ρ 1,0 Π³/Π» Π£ΠΠ Π² ΡΠΈΡΡΠ°ΡΠ½ΠΎΠΌ ΡΠ»Π΅ΠΊΡΡΠΎΠ»ΠΈΡΠ΅ ΠΌΠ΅Π΄Π½Π΅Π½ΠΈΡ ΡΠΎΡΡΠ°Π²ΠΈΠ»Π° 2,6 Π/Π΄ΠΌ2. Π£Π»ΡΡΡΠ°Π΄ΠΈΡΠΏΠ΅ΡΡΠ½ΡΠ΅ Π°Π»ΠΌΠ°Π·Ρ Π² ΡΠΈΡΡΠ°ΡΠ½ΠΎΠΌ ΡΠ»Π΅ΠΊΡΡΠΎΠ»ΠΈΡΠ΅ ΠΌΠ΅Π΄Π½Π΅Π½ΠΈΡ ΡΠΊΡΠ°Π½ΠΈΡΠΎΠ²Π°Π»ΠΈ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΡ ΡΡΠ°Π»ΡΠ½ΠΎΠ³ΠΎ ΠΎΠ±ΡΠ°Π·ΡΠ°, ΠΏΡΠΈ ΡΡΠΎΠΌ ΡΠ½ΠΈΠΆΠ°Ρ ΠΎΠ±ΡΠ΅Π΅ ΡΠΎΠΏΡΠΎΡΠΈΠ²Π»Π΅Π½ΠΈΠ΅ ΠΏΠ°ΡΡΠΈΠ²Π½ΠΎΠ³ΠΎ ΡΠ»ΠΎΡ ΡΡΠ°Π»ΠΈ Π‘Ρ 3. Π’Π°ΠΊΠΆΠ΅ ΠΏΡΠ΅Π΄ΡΡΠ°Π²Π»Π΅Π½Ρ ΡΠΊΠ²ΠΈΠ²Π°Π»Π΅Π½ΡΠ½ΡΠ΅ ΡΠ»Π΅ΠΊΡΡΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΡΡ
Π΅ΠΌΡ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ ΡΡΠ°Π»ΡΠ½ΡΡ
ΠΎΠ±ΡΠ°Π·ΡΠΎΠ², ΠΏΠΎΠ³ΡΡΠΆΠ΅Π½Π½ΡΡ
Π² ΡΠΈΡΡΠ°ΡΠ½ΡΠΉ ΡΠ»Π΅ΠΊΡΡΠΎΠ»ΠΈΡ ΠΌΠ΅Π΄Π½Π΅Π½ΠΈΡ ΠΈ ΡΠΎΡΡΠ°Π²Π»ΡΡΡΠΈΠ΅ Π΅Π³ΠΎ ΠΊΠΎΠΌΠΏΠΎΠ½Π΅Π½ΡΡ.
ΠΠ»Π΅ΠΊΡΡΠΎΡ ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΎΠ΅ ΠΎΡΠ°ΠΆΠ΄Π΅Π½ΠΈΠ΅ ΠΆΠ΅Π»ΡΠΎΠΉ Π»Π°ΡΡΠ½ΠΈ Π² ΡΡΠ»ΠΎΠ²ΠΈΡΡ ΠΈΠΌΠΏΡΠ»ΡΡΠ½ΠΎΠ³ΠΎ ΡΠ»Π΅ΠΊΡΡΠΎΠ»ΠΈΠ·Π°
Electrodeposition of copper-zinc alloy of non-cyanide sorbate electrolyte at current densities of 1,0-3,5 A/dm2 allows to produce yellow brass with a copper content of about 63-64 wt.Β°%. Using pulsed current allows to intensify the process of deposition 1,3-1,6 times and to increase the current efficiency of the alloy by 1,2-4,2 %. Coatings obtained by pulsed electrolysis have fine-grained structure, more compact and with good adhesion to the steel substrate. Imposition of pulsed current allows deposition of homogeneous phase coating and eliminates formation of intermetallic compounds.ΠΡΠΈΠ²Π΅Π΄Π΅Π½Ρ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΡ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠΉ Π±Π΅ΡΡΠΈΠ°Π½ΠΈΡΡΠΎΠ³ΠΎ ΡΠΎΡΠ±Π°ΡΠ½ΠΎΠ³ΠΎ ΡΠ»Π΅ΠΊΡΡΠΎΠ»ΠΈΡΠ° Π»Π°ΡΡΠ½ΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΠΈ ΠΏΠΎΠ»ΡΡΠ΅Π½Π½ΡΡ
ΠΈΠ· Π½Π΅Π³ΠΎ ΠΏΠΎΠΊΡΡΡΠΈΠΉ. ΠΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½Ρ ΠΊΠΈΠ½Π΅ΡΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΎΡΠΎΠ±Π΅Π½Π½ΠΎΡΡΠΈ ΡΠΎΠ²ΠΌΠ΅ΡΡΠ½ΠΎΠ³ΠΎ ΠΎΡΠ°ΠΆΠ΄Π΅Π½ΠΈΡ ΠΌΠ΅Π΄ΠΈ ΠΈ ΡΠΈΠ½ΠΊΠ°. ΠΠ·ΡΡΠ΅Π½ΠΎ Π²Π»ΠΈΡΠ½ΠΈΠ΅ ΠΈΠΌΠΏΡΠ»ΡΡΠ½ΠΎΠ³ΠΎ ΡΠΎΠΊΠ° ΠΈ ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΠΎΠ² Π½Π΅ΡΡΠ°ΡΠΈΠΎΠ½Π°ΡΠ½ΠΎΡΡΠΈ Π½Π° Π΄ΠΈΠ°ΠΏΠ°Π·ΠΎΠ½ ΡΠ°Π±ΠΎΡΠΈΡ
ΠΏΠ»ΠΎΡΠ½ΠΎΡΡΠ΅ΠΉ ΡΠΎΠΊΠ° ΠΈ ΠΊΠ°ΡΠ΅ΡΡΠ²ΠΎ Π»Π°ΡΡΠ½Π½ΡΡ
ΠΏΠΎΠΊΡΡΡΠΈΠΉ. ΠΡΠ±ΡΠ°Π½Ρ ΠΎΠΏΡΠΈΠΌΠ°Π»ΡΠ½ΡΠ΅ ΡΠ΅ΠΆΠΈΠΌΡ ΠΎΡΠ°ΠΆΠ΄Π΅Π½ΠΈΡ Π»Π°ΡΡΠ½Π½ΡΡ
ΠΏΠΎΠΊΡΡΡΠΈΠΉ Π² ΡΡΠ»ΠΎΠ²ΠΈΡΡ
ΠΈΠΌΠΏΡΠ»ΡΡΠ½ΠΎΠ³ΠΎ ΡΠ»Π΅ΠΊΡΡΠΎΠ»ΠΈΠ·Π°. ΠΡΠΈΠ²Π΅Π΄Π΅Π½Ρ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΡ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ Π²Π»ΠΈΡΠ½ΠΈΡ ΠΈΠΌΠΏΡΠ»ΡΡΠ½ΠΎΠ³ΠΎ ΡΠΎΠΊΠ° Π½Π° ΡΠ°Π·ΠΎΠ²ΡΠΉ ΡΠΎΡΡΠ°Π² ΠΈ ΠΌΠΈΠΊΡΠΎΡΡΡΡΠΊΡΡΡΡ ΠΎΡΠ°ΠΆΠ΄Π΅Π½Π½ΠΎΠ³ΠΎ ΡΠΏΠ»Π°Π²Π°
Charge Kondo Effect in Thermoelectric Properties of Lead Telluride doped with Thallium Impurities
We investigate the thermoelectric properties of PbTe doped with a small
concentration of Tl impurities acting as acceptors and described by
Anderson impurities with negative on-site (effective) interaction. The
resulting charge Kondo effect naturally accounts for a number of the low
temperature anomalies in this system, including the unusual doping dependence
of the carrier concentration, the Fermi level pinning and the self-compensation
effect. The Kondo anomalies in the low temperature resistivity at temperatures
and the -dependence of the residual resistivity are
also in good agreement with experiment. Our model also captures the qualitative
aspects of the thermopower at higher temperatures for high
dopings () where transport is expected to be largely dominated by
carriers in the heavy hole band of PbTe.Comment: chapter contributed to 'New Materials for Thermoelectric
Applications: Theory and Experiment' Springer Series: NATO Science for Peace
and Security Series - B: Physics and Biophysics, pp. 67-80, ed. Veljko
Zlati\'c, and Alex Hewson (Editor). ISBN: 978-94-007-4983-2 (2013
ΠΠ‘ΠΠΠΠΠΠΠ‘Π’Π Π‘Π’Π Π£ΠΠ’Π£Π Π« ΠΠΠΠΠ Π₯ΠΠΠ‘Π’Π ΠΠΠΠΠ«Π₯ ΠΠΠΠ Π«Π’ΠΠ ΠΠ Π ΠΠΠΠΠΠΠΠ Π ΠΠΠΠΠ’Π ΠΠΠΠ’ ΠΠΠΠΠΠΠΠ― Π£ΠΠ¬Π’Π ΠΠΠΠ‘ΠΠΠ Π‘ΠΠ«Π₯ ΠΠΠΠΠΠΠ Π ΠΠΠΠΠΠΠΠ Π¨ΠΠ₯Π’Π«
The properties of composite copper coatings with inclusions of ultradispersed diamonds (UDD) and diamond soot (DS) in copper citrate electrolyte have been investigated. The concentrations of diamond-containing additives have been varied in the range of 0.2β2 g/l. Sizes of copper microcrystals, UDD and DS particles were determined from the scanning electron microscopy images. By means of the X-ray fluorescent analysis, the interrelation between concentration of diamondbearing additives in electrolyte and their content in the obtained coatings has been established. The minimal microporosity and the maximal microhardness correspond to concentration of 1.0 g/l for both UDD and DS suspensions in citrate copper coating electrolytes. Copper-UDD coating has increased protective properties (porosity 2 time/cm2 ) and uniformity of distribution of diamond-bearing particles on a surface in comparison with a monocoating and copper-DS coating. Using UDD in citrate copper coating electrolyte with a concentration of diamond-bearing additive of 1.0 g/l is more preferable for production of composite electrochemical coatings.Β ΠΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½Ρ ΡΠ²ΠΎΠΉΡΡΠ²Π° ΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡΠΈΠΎΠ½Π½ΡΡ
ΠΌΠ΅Π΄Π½ΡΡ
ΠΏΠΎΠΊΡΡΡΠΈΠΉ Ρ Π²ΠΊΠ»ΡΡΠ΅Π½ΠΈΡΠΌΠΈ ΡΠ»ΡΡΡΠ°Π΄ΠΈΡΠΏΠ΅ΡΡΠ½ΡΡ
Π°Π»ΠΌΠ°Π·ΠΎΠ² (Π£ΠΠ) ΠΈ Π°Π»ΠΌΠ°Π·Π½ΠΎΠΉ ΡΠΈΡ
ΡΡ (ΠΠ¨) Π² ΡΠΈΡΡΠ°ΡΠ½ΠΎΠΌ ΡΠ»Π΅ΠΊΡΡΠΎΠ»ΠΈΡΠ΅ ΠΌΠ΅Π΄Π½Π΅Π½ΠΈΡ. ΠΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΠΈΠΈ Π°Π»ΠΌΠ°Π·ΠΎΡΠΎΠ΄Π΅ΡΠΆΠ°ΡΠΈΡ
Π΄ΠΎΠ±Π°Π²ΠΎΠΊ Π²Π°ΡΡΠΈΡΠΎΠ²Π°Π»ΠΈ Π² Π΄ΠΈΠ°ΠΏΠ°Π·ΠΎΠ½Π΅ 0,2β2 Π³/Π». ΠΠΎ ΠΈΠ·ΠΎΠ±ΡΠ°ΠΆΠ΅Π½ΠΈΡΠΌ, ΠΏΠΎΠ»ΡΡΠ΅Π½Π½ΡΠΌ Ρ ΠΏΠΎΠΌΠΎΡΡΡ ΡΠ°ΡΡΡΠΎΠ²ΠΎΠ³ΠΎ ΡΠ»Π΅ΠΊΡΡΠΎΠ½Π½ΠΎΠ³ΠΎ ΠΌΠΈΠΊΡΠΎΡΠΊΠΎΠΏΠ°, ΠΎΠΏΡΠ΅Π΄Π΅Π»ΠΈΠ»ΠΈ ΡΠ°Π·ΠΌΠ΅ΡΡ ΠΌΠΈΠΊΡΠΎΠΊΡΠΈΡΡΠ°Π»Π»ΠΎΠ² ΠΌΠ΅Π΄ΠΈ, ΡΠ°ΡΡΠΈΡ Π£ΠΠ ΠΈ ΠΠ¨. Π‘ ΠΏΠΎΠΌΠΎΡΡΡ ΡΠ΅Π½ΡΠ³Π΅Π½ΠΎΡΠ»ΡΠΎΡΠ΅ΡΡΠ΅Π½ΡΠ½ΠΎΠ³ΠΎ Π°Π½Π°Π»ΠΈΠ·Π° ΡΡΡΠ°Π½ΠΎΠ²ΠΈΠ»ΠΈ Π²Π·Π°ΠΈΠΌΠΎΡΠ²ΡΠ·Ρ ΠΌΠ΅ΠΆΠ΄Ρ ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΠΈΠ΅ΠΉ Π°Π»ΠΌΠ°Π·ΠΎΡΠΎΠ΄Π΅ΡΠΆΠ°ΡΠΈΡ
Π΄ΠΎΠ±Π°Π²ΠΎΠΊ Π² ΡΠ»Π΅ΠΊΡΡΠΎΠ»ΠΈΡΠ΅ ΠΈ ΠΈΡ
ΡΠΎΠ΄Π΅ΡΠΆΠ°Π½ΠΈΠ΅ΠΌ Π² ΠΏΠΎΠ»ΡΡΠ΅Π½Π½ΡΡ
ΠΏΠΎΠΊΡΡΡΠΈΡΡ
. ΠΠΈΠ½ΠΈΠΌΠ°Π»ΡΠ½Π°Ρ ΠΌΠΈΠΊΡΠΎΠΏΠΎΡΠΈΡΡΠΎΡΡΡ ΠΈ ΠΌΠ°ΠΊΡΠΈΠΌΠ°Π»ΡΠ½Π°Ρ ΠΌΠΈΠΊΡΠΎΡΠ²Π΅ΡΠ΄ΠΎΡΡΡ ΡΠΎΠΎΡΠ²Π΅ΡΡΡΠ²ΡΠ΅Ρ ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΠΈΠΈ 1,0 Π³/Π» ΠΊΠ°ΠΊ Π΄Π»Ρ ΡΡΡΠΏΠ΅Π½Π·ΠΈΠΈ Ρ Π£ΠΠ, ΡΠ°ΠΊ ΠΈ Π΄Π»Ρ ΡΡΡΠΏΠ΅Π½Π·ΠΈΠΈ Ρ ΠΠ¨ Π² ΡΠΈΡΡΠ°ΡΠ½ΡΡ
ΡΠ»Π΅ΠΊΡΡΠΎΠ»ΠΈΡΠ°Ρ
ΠΌΠ΅Π΄Π½Π΅Π½ΠΈΡ. ΠΠΎΠΊΡΡΡΠΈΡ ΠΌΠ΅Π΄Ρ-Π£ΠΠ ΠΎΠ±Π»Π°Π΄Π°ΡΡ ΠΏΠΎΠ²ΡΡΠ΅Π½Π½ΡΠΌΠΈ Π·Π°ΡΠΈΡΠ½ΡΠΌΠΈ ΡΠ²ΠΎΠΉΡΡΠ²Π°ΠΌΠΈ (ΠΏΠΎΡΠΈΡΡΠΎΡΡΡ 2 ΠΏΠΎΡ/ΡΠΌ2 ) ΠΈ ΠΎΠ΄Π½ΠΎΡΠΎΠ΄Π½ΠΎΡΡΡΡ ΡΠ°ΡΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΡ Π°Π»ΠΌΠ°Π·ΠΎΡΠΎΠ΄Π΅ΡΠΆΠ°ΡΠΈΡ
ΡΠ°ΡΡΠΈΡ ΠΏΠΎ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ Π² ΡΡΠ°Π²Π½Π΅Π½ΠΈΠΈ Ρ ΠΌΠΎΠ½ΠΎΠΏΠΎΠΊΡΡΡΠΈΠ΅ΠΌ ΠΈ ΠΌΠ΅Π΄Ρ-ΠΠ¨. ΠΠ»Ρ ΠΏΠΎΠ»ΡΡΠ΅Π½ΠΈΡ ΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡΠΈΠΎΠ½Π½ΡΡ
ΡΠ»Π΅ΠΊΡΡΠΎΡ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΏΠΎΠΊΡΡΡΠΈΠΉ ΠΏΡΠ΅Π΄ΠΏΠΎΡΡΠΈΡΠ΅Π»ΡΠ½Π΅Π΅ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°ΡΡ Π£ΠΠ Π² ΡΠΈΡΡΠ°ΡΠ½ΠΎΠΌ ΡΠ»Π΅ΠΊΡΡΠΎΠ»ΠΈΡΠ΅ ΠΌΠ΅Π΄Π½Π΅Π½ΠΈΡ Ρ ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΠΈΠ΅ΠΉ Π°Π»ΠΌΠ°Π·ΠΎΡΠΎΠ΄Π΅ΡΠΆΠ°ΡΠ΅ΠΉ Π΄ΠΎΠ±Π°Π²ΠΊΠΈ 1,0 Π³/Π».
- β¦