Журнал Российского общества по неразрушающему контролю и технической диагностике
The journal of the Russian society for non-destructive testing and technical diagnostic
 
| Русский Русский | English English |
 
Главная Archive
22 | 12 | 2024
2014, 04 April

DOI: 10.14489/td.2014.04.pp.045-054 

Lipkina T.V., Lipkin S.M., Narochnaya V.M., Kucherenko S.V., Gaydar A.I., Astahov A.S., Kucherenko E.I., Pozidaeva S.A., Shishka V.G.
A PREDICTION OF PROTECTIVE PROPERTIES OF HEAT SURFACE OXIDE FILMS OF HEATPOWER EQUIPMENT
(pp. 45-54)

Abstract. Features of estimation and prediction of stainless steels oxide films protective properties for water-vapor corrosion are concerned. These films are formed on the surface of steels by vapor-water treatment. The aim of investigation was infinding most important factors, which determine the rate of precipitate accumulation, protective propertiesof oxide films, and its mechanical strength. Voltammetry, AC-impedance, chronopotentiometric methods, combined with SEM and X-ray, were used as experimental methods. All tests were made on the control cutting examples of pipelines. It was obtained, that corrosion rate is determined by a part of free surface, calculated from voltammetry data on coated and free surface, inner layer thickness, calculated from cathodicpulse chronopotentiometric curves in alkaline electrolyte, active component of AC-impedance of films in alkaline electrolyte, phase composition of films, which is identified and formalized from cathodic pulse chronopotentiometric curves in acidic electrolyte. As a result electrochemical corrosion mechanism was proposed and quantitativemodel of corrosion rate and mechanical strength of the films in the multiple regression form. This form gives a features of corrosion rate and mechanical strength of the films calculation on the base of surface parameters.

Keywords: heat surface, protectivefilms, voltammetry, chronopotentiometric, AC-impedance, inner layer of film, corrosion rate, multiple regressionequation, protonic conductivity, cathodic corrosion process, phases of protective films, vapor-water treatment, electrochemical express-analysis.

 

T. V. Lipkina, S. M. Lipkin 
Platov South-Russian State Polytechnic University (NPI), Novocherkassk, Russia

A. I. Gaydar 
Federal Public Budgetary Scientific Institution “Research Institute of Perspective Materials and Technologies”, Moscow, Russia

V. M. Narochnaya, E. I. Kucherenko 
OGK-2 Branch Novocherkassk State District Power Plant, Novocherkassk, Russia

A. S. Astahov 
Chemistry Don State Agrarian University, Platov South-Russian State Polytechnic University (NPI), Novocherkassk, Russia

S. V. Kucherenko 
Chemistry Don State Agrarian University, Novocherkassk, Russia.  E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.

S. A. Pozidaeva 
Platov South-Russian State Polytechnic University (NPI), Federal State Unitary Enterprise "Orion", Novocherkassk, Russia

V. G. Shishka Federal State Unitary Enterprise "Orion", Novocherkassk, Russia

 

 

1. Methodical instructions on performance steam-water-oxygen cleaning and passivation of the internal surfaces of the power equipment. (2001). Guidance document No. RD 153-34.0-37.411-2001. Russian Federation. Moscow.
2. Akol'zin P. A. (1982). Corrosion and protection of metal of the heat power equipment. Moscow: Energoatomizdat.
3. Brainina Kh. Z., Neiman E. Ia., Slepushkin V. V. (1988). Inversion electroanalytical methods. Moscow: Khimiia.
4. Lipkin S. M., Lipkina T. V., Shishka V. G., Pozhidaeva S. A., Bolovinov E. V. (2008). Electrochemical sensor for local electrochemical device for express-analysis. The patent for useful model No. 74713 RF: MPK G01N 27/00. Russian Federation.
5. Chen Y., Sridharan K., Allen T. (2006). Corrosion behavior of ferritic–martensitic steel T91 in supercritical water. Corrosion Science, 48(9), pp. 2843-2850. doi: 10.1016/j.corsci.2005.08.021
6. Tan L., Ren X., Allen T. R. (2006). Corrosion be-havior of 9–12 % Cr ferritic–martensitic steels in supercritical water. Corrosion Science, 48(8), pp. 2014-2035.

 

 

This article  is available in electronic format (PDF).

The cost of a single article is 350 rubles. (including VAT 18%). After you place an order within a few days, you will receive following documents to your specified e-mail: account on payment and receipt to pay in the bank.

After depositing your payment on our bank account we send you file of the article by e-mail.

To order articles please fill out the form below:

Purchase digital version of a single article


Type the characters you see in the picture below



 

 

 

 

 

 
Search
Rambler's Top100 Яндекс цитирования