Evaluation of high-temperature corrosion on 13CrMo4-5 steel operated in the power industry

Monika Gwoździk




Abstract

The paper presents results of studies of steel and the oxide layer formed during a long-term operation (t=130,000h) on 13CrMo4-5 steel at an elevated temperature (T=455°C). The oxide layer was studied on a surface and a cross-section at the inner site of the pipe (in the flowing medium – steam side). The paper contains results of studies such as: light microscopy, scanning electron microscopy, X-ray phase analysis.


Keywords:

oxide layer, 13CrMo4-5 steel, SEM, XRD, LM


BRUNÉ W., TRZESZCZYŃSKI J., HALIŃSKI J. 2011. Remote diagnostics of main steam pipelines of power units. 13th Informative & Training Symposium. Maintenance of thermo-mechanical power equipment. Management of the Productive Assets of a Group of Power Plants, 91-95 (in Polish)
DOBOSIEWICZ J., BRUNNÉ K. 2007. Ultrasonic measurement of oxides layer thickness on superheater coil inner surface. Energetyka, 6, 460-464 (in Polish)
GAWRON P. 2014. Czystość wody kotłowej a uszkodzenia rur w rejonach przewężeń, na łukach oraz na odcinkach pochyłych. Dozór Techniczny, 3, 54-58 (in Polish)
GWOŹDZIK M. 2011. Analiza zdefektowania warstw tlenkowych na stali X10CrMoVNb9- 1 długotrwale eksploatowanej w temperaturze 535oC. Inżynieria Materiałowa, 182 (4), 432-434 (in Polish)
GWOŹDZIK M., Nitkiewicz Z. 2011. Charakterystyka odporności na zarysowanie warstwy tlenkowej powstałej na stali P91. Inżynieria Materiałowa, 182 (4), 435-438 (in Polish)
GWOŹDZIK M. 2014. Mechanizm degradacji warstw tlenkowych na stalach długotrwale eksploatowanych w energetyce. Monograph No. 291, Copyright by Wydawnictwo Politechniki Częstochowskiej (in Polish)
GWOŹDZIK M. 2016a. Analysis of Crystallite Size Changes in an Oxide Layer Formed on Steel Used in the Power Industry. Acta Physica Polonica A, 130 (4), 935-938.
GWOŹDZIK M. 2016b. Structure Studies of Porous Oxide Layers Formed on 13CrMo4-5 Steels Long-Term Operated in the Power Industry. Technical Sciences, 19 (3), 257-266.
KLEPACKI F., WYWROT D. 2010. Life of resuperheater coils exposed to the effects of low-emission combustion. 12th Informative & Training Symposium. Maintenance of thermo-mechanical power equipment. Upgrading power equipment to extend its operating period beyond 300.000 hours, 29-35 (in Polish)
LAVERDE D., GOMEZ-ACEBO T., CASTRO F. 2004. Continuous and cyclic oxidation of T91 ferritic steel under steam. Corrosion Science, 46, 613-631.
LELUSZ M. 2012. Ocena zawartości aktywnego SiO2 w popiołach lotnych wytwarzanych w obiektach energetycznych północno-wschodniej Polski. Civil and Environmental Engineering, 3, 179-184 (in Polish)
PRISS J., ROJACZ H., KLEVTSOV I., DEDOV A., WINKELMANN H., BADISCH E. 2014. High temperature corrosion of boiler steels in hydrochloric atmosphere under oil shale ashes. Corrosion Science, 82, 36-44.
ŚLIWA A. GAWRON P. 2009. Miedź w osadach w urządzeniach energetycznych – problem eksploatacyjny i remontowy. Dozór Techniczny, 2, 40-43 (in Polish)
TRZESZCZYŃSKI J. 2010. Technical condition assessment of and life prediction for the critical components of thermo-mechanical power equipment intended to remain in service beyond 300 000 hours. 12th Informative & Training Symposium. Maintenance of thermomechanical power equipment. Upgrading power equipment to extend its operating period beyond 300.000 hours, 13-21 (in Polish)
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Published
2018-12-05

Cited by

Gwoździk, M. (2018). Evaluation of high-temperature corrosion on 13CrMo4-5 steel operated in the power industry. Technical Sciences, 21(4), 335–343. https://doi.org/10.31648/ts.4177

Monika Gwoździk 








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