Результаты 11 - 14 из 14
11.

The Effect of Ozone on the Corrosion of Steels in the Processes of Oxidation of Pyridines

G. O. Tatarchenko and I. N. Shapovalova

 

Severodonetsk Technological Institute of the East-Ukrainian National University,
Prospect Sovetskii 59a, Severodonetsk, Luganskaya Oblast, 93400 Ukraine

e-mail: Этот e-mail защищен от спам-ботов. Для его просмотра в вашем браузере должна быть включена поддержка Java-script

Received November 14, 2003

 

Abstract — The corrosion-electrochemical behavior of austenitic and ferritic steels and their weld joints in model systems of oxidation of pyridines in the presence of ozone is investigated. Possibilities of applying structural steels to the implementation of organic synthesis processes in ozonated acetic acid media are assessed.
23/09/2008 | 885 Посещения | Печать
12.

Chloride Removal from Reinforced Concrete and Relevant Loss of Strength

G. Bikul’chus

 

Institute of Chemistry, ul. Goshtauto 9, Vilnius, 01018 Lithuania

e-mail: Этот e-mail защищен от спам-ботов. Для его просмотра в вашем браузере должна быть включена поддержка Java-script

Received March 3, 2005

 

Abstract — Electrochemical methods for the removal of chlorides from the steel–concrete interface are consid-ered. A sufficient reduction in the chloride concentration in the interface layer is shown to suppress the corro-sion of reinforcing steel bars. However, it is inevitably accompanied by a decrease in the mechanical strength of the steel–concrete contact and, correspondingly, a probable accelerated destruction of reinforced concrete structures.
23/09/2008 | 860 Посещения | Печать
13.

On the Local Inner Corrosion of Oil and Gas Pipelines in the West-Siberian Fields and Its Prevention

A. A. Gonik

 

GUP Institute of Problems of Energy-Resources Transportation,
pr. Oktyabrya 144/3, Ufa, 450055 Russia

e-mail: Этот e-mail защищен от спам-ботов. Для его просмотра в вашем браузере должна быть включена поддержка Java-script ; Этот e-mail защищен от спам-ботов. Для его просмотра в вашем браузере должна быть включена поддержка Java-script

Received November 23, 2004

 

Abstract — The sources of corrosion grooving of inner surface of pipes in the West-Siberian oil and gas pipelines is analyzed. A possible way of preventing this local corrosion is to hydraulically increase the aggregative stability of the pumped-through emulsion. For this purpose, stratal water should be actively stirred in lower segments of the pipelines.
23/09/2008 | 837 Посещения | Печать
14.

Development or Stagnation of the Theory of Metal Passivity

Yu. V. Alekseev

 

Karpov Institute of Physical Chemistry, ul. Vorontsovo Pole 10, Moscow, 103064 Russia

e-mail: Этот e-mail защищен от спам-ботов. Для его просмотра в вашем браузере должна быть включена поддержка Java-script

Received August 17, 2004

 

Abstract — Methods and approaches of physicochemical modeling, as well as the adequacy of the mathematical apparatus used for constructing two variants of the theory of a passively dissolved metal state are compared. Their essential differences are noticed only as a background, while their contents are discussed chiefly in view of their applicability to solving the problem formulated. The first approach presented in the works of Yu.A.Popov and coworkers declares the adherence to the theory of K. Fetter based on the hypothesis about the equilibrium oxygen exchange between the oxide and solution. The second approach developed in the kinetic–electrostatic model of Ya.M. Kolotyrkin and Yu.V. Alekseev rejects this hypothesis and assumes that of all the processes in the domain between the metal and solution are equally important. For disproving our concept, the opponents suggest a “developed Fetter’s model.” The results obtained in this approach and their adequacy are the main object of this investigation.
23/09/2008 | 853 Посещения | Печать
<< [Первая] < [Предыдущая] 1 2 [Следующая] > [Последняя] >>
  

Powered by AlphaContent 3.0.4 © 2005-2024 - All rights reserved