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(11/10) Ученые из ИФХЭ РАН и МГУ под руководством Ольги Виноградовой поняли, как «полосатая» гидрофобность..
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(11/10) Ученые обнаружили пути проникновения вирусов гриппа и ВИЧ в организм
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(17/04) Курс “Анализ геномных данных”, Москва, 2 – 11 июля 2012
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(12/03) Впервые получено изображение атомов, движущихся в молекуле
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Results 61 - 70 of 97
61.

Solvent Activity and Its Vapor Pressure over a Nonvolatile Substance Solution

R. R. Salem

 

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Received March 16, 2005

DOI: 10.1134/S0033173206030143
18/09/2008 | 878 Hits | Print

62.

On the Asymptotic Growth of Evaporating Scale

I. G. Nakhutsrishvili and A. Z. Adamiya

 

Received April 4, 2005

DOI: 10.1134/S0033173206030155
18/09/2008 | 926 Hits | Print

63.

Corrosion Resistance of Zambian Silver Coin from the frame0African Wildlifeframe1 Series

I. G. Erusalimchika, M. N. Filippovb, and I. V. Murav’evab

 

a Moscow Institute of Radio Engineering, Electronics, and Automatic Control (Technical University),
pr. Vernadskogo 78, Moscow, 117454 Russia

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b Moscow State Institute of Steel and Alloys (Technological University),
Leninskii pr. 4, Moscow, 119049 Russia

Received September 11, 2005

 

Abstract — The surface of Zambian silver coin from the “African Wildlife” series is studied by local X-ray fluorescent analysis, mass-spectrometry, and electrode potential measurements. High purity of the coin metal is pointed out. Faint yellow tarnish at some spots on the surface is caused by local contamination during the coin production or storage.

DOI: 10.1134/S0033173206030167
18/09/2008 | 909 Hits | Print

64.

The Effect of Disinfecting Agents on the Contact Corrosion of Medical Instruments

E. K. Sevidova, I. D. Roi, and I. I. Stepanova

 

National Technical University “Kharkov Polytechnical Institute,”
ul. Frunze 21, Kharkov, 61002 Ukraine

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Received July 17, 2003

 

Abstract — The contacts of a tin–lead solder (frame0OC 61) with copper, brass and nickel in various types of disinfectants are investigated as galvanic couples where the solder always functions as the anode. The maximum relative increase in the corrosion rate is observed in a weakly alkaline hembar solution (guanidine-based biocidic polymer compound). The active oxidizers contained in delaxon and chlorantoin solutions can decompose due to their reduction at the cathodes of the couples.

 

DOI: 10.1134/S0033173206030179
18/09/2008 | 821 Hits | Print

65.

New Corrosion-Resistant Electrodes: Synthetic Diamond and Diamond-Based Materials. The Semiconductor and Structure Aspectsframe0a Review

Yu. V. Pleskov

 

Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences,
Leninskii pr. 31, Moscow, 119991 Russia

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Received August 6, 2005

 

Abstract — Specific features of electrode behavior of synthetic diamond and diamond-based materials (in particular, diamond–nondiamond carbon nanocomposites, nanocrystalline diamond, and diamond-like carbon) are reviewed. Effects of the crystal structure and semiconductor nature of diamond on its electrochemical properties are discussed.

 

18/09/2008 | 1140 Hits | Print

66.

Structure and Chemical and Phase Composition of the Thermal Oxidation Products of Niframe0Moframe1B Coatings Plated by Chemical Catalytic Reduction

V. A. Arslambekov, A. B. Drovosekov, M. V. Ivanov, V. M. Krutskikh, E. N. Lubnin, and Yu. M. Polukarov

 

Institute of Physical Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119991 Russia

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Received July 4, 2005

 

Abstract — Morphology, phase composition, and chemical state of the elements in the superficial oxide layers on Ni–Mo–B alloy coatings obtained by chemical catalytic reduction of metal ions with dimethylamine borane are studied. The coatings were oxidized at 600°C and an air pressure of 2 104 Pa. The difference in the growth morphology of the oxide layers on freshly deposited coatings and those preliminarily heated in a vacuum is revealed. The oxide films are composed of the MoO2 , Mo2C, as well as amorphous and nanocrystalline NiO, phases. Electron Auger spectroscopy has shown that boron in the form of B(OH)3 is present in segregations along spheroid boundaries. Upon the oxidation of freshly deposited coatings, pits are formed as a result of the “explosive” removal of water vapors from the coating.

 

18/09/2008 | 1032 Hits | Print

67.

Dissolution Kinetics of Hydrogenated Iron in Acidic Chloride Electrolyte

A. I. Marshakov and T. A. Nenasheva

 

Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences,
Leninskii pr. 31, Moscow, 119991 Russia

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Received December 23, 2004

 

Abstract — The rate constants of the discharge of H+ ions and the molization of adsorbed H atoms and the constant of hydrogen exchange between the surface and bulk of iron in acidic chloride electrolytes were determined. The effect of sorbed hydrogen on the kinetics of iron dissolution was studied with the use of a bipolar membrane electrode.

 

18/09/2008 | 1106 Hits | Print

68.

The Effect of Phosphonates on the Corrosion of Carbon Steel in Heat-Supply Water

Yu. V. Balaban-Irmenin, A. M. Rubashov, and N. G. Fokina

 

All-Russian Heat-Power Engineering Institute (OAO VTI), Moscow, Russia

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Received August 19, 2004

 

Abstract — The effect of phosphonates used in Russian heat-power engineering on the corrosion of carbon steel in deaerated delivery water at 90°C is studied. It is shown that introduction of phosphonates reduces the susceptibility of steel to local corrosion. A zinc complex of hydroxyethylidenediphosphonic acid (OEDP–zinc) is the most effective inhibitor of the anodic reaction.

 

18/09/2008 | 1122 Hits | Print

69.

Boron Based Complex Wear-Resistant Coatings

Yu. A. Balandin

 

Magnitogorsk State Technical University, pr. Lenina 38, Magnitogorsk, 455000 Russia

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Received October 27, 2004

 

Abstract — Applying boron, boron–copper, and boron–nickel diffusion coatings to die steels, as well as the microhardness, microbrittleness and wear resistance of the steels with the coatings are considered.

18/09/2008 | 1143 Hits | Print

70.

The Dissolution of Silver Cathodically Polarized in Acid Chloride Media

L. E. Volkova, I. K. Marshakov, N. M. Tutukina, and I. V. Kreiser

 

Voronezh State University, Universitetskaya pl. 1, Voronezh, 394006 Russia

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Received October 1, 2004

 

Abstract — The dissolution of silver cathodically polarized in a 1M HCl solution is investigated. It occurs only in the presence of oxygen, is independent of the cathodic potential in a range from 0.00 to –0.45 V, and is determined by the convective experimental conditions and the acidity of the solution. It may be assumed that silver can be oxidized at cathodic potentials because of an increase in the concentration of hydroxide ions adsorbed by the electrode, during the reduction of the dissolved oxygen.

 

18/09/2008 | 1193 Hits | Print

  

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