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21.
Effect of Some Compounds on the Sensitivity of the Inhibitive Properties of o-Hydroxyazomethine Derivatives to Variation in the Polarity of Their Electrophilic Substituents V. P. Grigor’ev and V. V. Boginskaya Rostov State University, ul. Zorge 7, Rostov-on-Don, 344090 Russia e-mail:
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Received July 19, 2005 Abstract — The sensitivity of the protective effect of an inhibitor from a reaction series to the variation of the polarities of electrophilic substituents in its molecule depends on the nature and concentrations of salt additives. The correlations obtained for iron corrosion were interpreted in terms of the Linear Gibbs Energy Relation (LGER) and the Principle of Hard and Soft Acids and Bases (HSAB). PACS numbers: 82.45.Qr, 81.15.Pq DOI: 10.1134/S0033173206050067
12/09/2008 | 1180 Посещения | Печать
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22.
Electrodeposition of Yellow Bronze from Acidic Sulfate Baths Containing Polyether Laprol and Micromolar Additives of Halides Z. Mockus, S. Kanapeckaité, V. Jasulaitiené, and A. Survila Institute of Chemistry, Göstauto 9, Vilnius, LT01108 Lithuania e-mail:
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Received April 23, 2005 Abstract — The composition of yellow bronze coatings deposited from acidic sulfate solutions added with polyether laprol and the electrodeposition conditions are studied by voltammetry and XPS. It is found that halides in rather low (micromolar) concentrations affect significantly the partial electrodeposition processes. Chlorides increases cathodic polarization, widen the current window of the yellow bronze electrodeposition, and favor the increase in tin content of the coatings. Bromides narrow the current window, lower the tin content in the coatings, and hinder the yellow bronze surface oxidation. Iodides inhibit the copper electroreduction markedly, which makes the yellow bronze deposition practically impossible. PACS numbers: 81.15.Pq, 82.45.Qr DOI: 10.1134/S0033173206050079 Keywords: copper, tin, deposition, polyether laprol, halides
12/09/2008 | 1208 Посещения | Печать
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23.
Kinetics of Inhibition of Aluminum Corrosion in Hydrogen Chloride Electrolytes with Binary Salt Mixtures O. I. Bartenevaa and V. V. Bartenevb a Research Institute of Physical and Organic Chemistry,
pr. Stachki 194/2, Rostov-on-Don, 344090 Russia b Rostov State University, ul. Bol’shaya Sadovaya 105, Rostov-on-Don, 344007 Russia e-mail:
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Received May 19, 2005 Abstract — The kinetics of inhibition of aluminum corrosion with SnCl2 , CdCl2 , PbCl2 , and their equimolar binary mixtures was studied under contact exchange conditions. Prerequisites for synergism in these mixtures were determined. The parameter  of mutual influence of the components in the mixture was formally separated into the constituents associated with changes in the aluminum surface coverage with the contact deposit, s, and in the free corrosion potential of aluminum,   . In the mixtures studied, s > 1, while  < 1; however, the overall effect is synergism because s > 1/ . PACS numbers: 82.45.Qr, 81.15.Pq DOI: 10.1134/S0033173206050080
12/09/2008 | 1113 Посещения | Печать
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24.
The Effect of Static Magnetic Field on the Propertiesof Acrylic Paints G. Bikul’chyus, R. Butkene, and A. Ruchinskene Institute of Chemistry, ul. Goshtauto 9, Vilna, 01018 Lithuania e-mail:
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Received June 17, 2005 Abstract — The effect of magnetic field on the protective properties of acrylic paints is studied using the methods of electrochemical impedance and infrared Fourier spectroscopy. It is found that pretreatment of paints with magnetic field deteriorates their decorative properties, whereas drying of acrylic paints in the field impairs their protective properties. PACS numbers: 81.65.Kn DOI: 10.1134/S0033173206050092
12/09/2008 | 1173 Посещения | Печать
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25.
Anodic Dissolution of Ferrite Phases from Iron Carbon Ferrite Cementite Alloys with Different Forms of Cementite S. N. Saltykov and N. V. Tarasova Lipetsk State Technical University, ul. Moskovskaya 30, Lipetsk, 39800 Russia e-mail:
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Received September 1, 2005 Abstract — Methods of electrochemical analysis, metallography and mathematical statistics are applied to calculate the ferrite anodic dissolution rate from both the independent structural constituent and the subconstituent in lamellar or granular pearlite. The higher dissolution rate of the former compared to the latter is caused by the structure peculiarities. PACS numbers: 82.45.Qr, 81.15.Pq DOI: 10.1134/S0033173206050109
12/09/2008 | 1071 Посещения | Печать
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26.
Video in-situ Observation of the Free Corrosion of an Al-1Sn Sacrificial Alloy in Sodium Sulfate A. V. Goncharov and Yu. Ya. Andreev Moscow State Institute of Steel and Alloys (Technological University),
Leninskii pr. 4, Moscow, 117936 Russia e-mail:
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Received Novermber 14, 2005 Abstract — Some peculiarities of the Al–1Sn alloy corrosion in sodium sulfate solution were investigated by applying video-observation in-situ. As a result of the free corrosion the inclusions of almost pure tin were revealed and identified with the use of a scanning electron microscope. The hydrogen evolution occurs just at the inclusions1. PACS numbers: 01.50.H–, 01.50.Lc DOI: 10.1134/S0033173206050110
12/09/2008 | 885 Посещения | Печать
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27.
The Effect of Citrate Ions on the Anodic Behavior of Tungstate A. V. Balmasova, E. I. Vinogradova, and S. A. Lilinb a Ivanovo State University of Chemistry and Technology,
pr. Engel’sa 7, Ivanovo, 153460 Russia b Institute of Chemistry of Solutions, Russian Academy of Sciences,
ul. Akademicheskaya 1, Ivanovo, 153045 Russia e-mail:
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Received December 14, 2005 PACS numbers: 82.45.Qr DOI: 10.1134/S0033173206050122
12/09/2008 | 924 Посещения | Печать
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28.
Analysis of the Field of Currents of a Grounded Cathodically Protected Pipe-Line System V. N. Tkachenko Volgograd State Architectural-Building University, ul. Akademicheskaya 1, Volgograd, 470074 Russia e-mail:
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Received March 15, 2005 Abstract — By the example of calculating the field of underground currents, caused by cathodic protection of nonuniform pipe system, the procedure of field measurements (aimed at detecting the conductive coupling of an insulated pipe with grounding structures counteracting the protection efficiency) is discussed. PACS numbers: 82.45.Qr, 81.15.Pq DOI: 10.1134/S0033173206050134
12/09/2008 | 830 Посещения | Печать
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29.
Electrodeposition and Properties of Bismuth Alloys with Low-Melting Metals V. V. Povetkina and T. G. Shiblevab a Tyumen State University of Oil and Gas, ul. Volodarskogo 38, Tyumen 625000 Russia b Tyumen State University, Tyumen, 625003, Russia e-mail:
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Received November 23, 2004 Abstract — The electrodeposition of bismuth alloys with indium, lead and cadmium from trilonate baths is investigated. X-ray diffraction and scanning electron microscopy are used to determine the structure of the prepared alloys deposited under various electrolysis conditions. The electrocrystallization conditions of two-phase alloys—mechanical mixtures, are determined. The electrochemical alloying of bismuth coatings with low-melting metals is conducive to refining the grain structure, smoothing the surface relief, and increasing their acidic corrosion resistance. PACS numbers: 82.45.Qr, 81.15.Pq DOI: 10.1134/S0033173206050146
12/09/2008 | 906 Посещения | Печать
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30.
Statistical Aspect of the Independence Principle of Heterogeneous Reactions Taking into Account the Surface State Yu. V. Alekseev Karpov Institute of Physical Chemistry, ul. Vorontsovo Pole 10, Moscow, 103064 Russia e-mail:
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Received July 12, 2005 Abstract — The independence principle of electrode reactions is shown to be no more than a particular example of the theoretical-probabilistic regularities determined by the statistical nature of a large scope of systems studied by the chemical kinetics. It does not exclude but explains the possible mutual effect of different reactions on each other. In the case of a mass exchange between a structured solid and a solution or a gas, the independence principle should be formulated in terms of the superficial atom positions determined by the number of close neighbors. PACS numbers: 82.45.Qr DOI: 10.1134/S0033173206040011
12/09/2008 | 1320 Посещения | Печать
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