Corrosion Behavior of Pipeline Carbon Steel under Different Iron Oxide Deposits in the District Heating System
The corrosion behavior of pipeline steel covered by iron oxides (α-FeOOH; Fe3O4 and Fe2O3) was investigated in simulated district heating water. In potentiodynamic polarization tests; the corrosion rate of pipeline steel is increased under the iron oxide but the increaseing rate is different due to...
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doaj-08af75e4f251483da5101230903aaa392020-11-25T01:11:43ZengMDPI AGMetals2075-47012017-05-017518210.3390/met7050182met7050182Corrosion Behavior of Pipeline Carbon Steel under Different Iron Oxide Deposits in the District Heating SystemYong-Sang Kim0Jung-Gu Kim1School of Advanced Materials Engineering, Sungkyunkwan University, 300 Chunchun-Dong, Jangan-Gu, Suwon 440-746, KoreaSchool of Advanced Materials Engineering, Sungkyunkwan University, 300 Chunchun-Dong, Jangan-Gu, Suwon 440-746, KoreaThe corrosion behavior of pipeline steel covered by iron oxides (α-FeOOH; Fe3O4 and Fe2O3) was investigated in simulated district heating water. In potentiodynamic polarization tests; the corrosion rate of pipeline steel is increased under the iron oxide but the increaseing rate is different due to the differnet chemical reactions of the covered iron oxides. Pitting corrosion was only observed on the α-FeOOH-covered specimen; which is caused by the crevice corrosion under the α-FeOOH. From Mott-Schottky and X-ray diffraction results; the surface reaction and oxide layer were dependent on the kind of iron oxides. The iron oxides deposit increases the failure risk of the pipeline and localized corrosion can be occurred under the α-FeOOH-covered region of the pipeline. Thus, prevention methods for the iron oxide deposit in the district pipeline system such as filtering or periodic chemical cleaning are needed.http://www.mdpi.com/2075-4701/7/5/182corrosionpolarizationiron oxideMott-Schottkycarbon steel |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Yong-Sang Kim Jung-Gu Kim |
spellingShingle |
Yong-Sang Kim Jung-Gu Kim Corrosion Behavior of Pipeline Carbon Steel under Different Iron Oxide Deposits in the District Heating System Metals corrosion polarization iron oxide Mott-Schottky carbon steel |
author_facet |
Yong-Sang Kim Jung-Gu Kim |
author_sort |
Yong-Sang Kim |
title |
Corrosion Behavior of Pipeline Carbon Steel under Different Iron Oxide Deposits in the District Heating System |
title_short |
Corrosion Behavior of Pipeline Carbon Steel under Different Iron Oxide Deposits in the District Heating System |
title_full |
Corrosion Behavior of Pipeline Carbon Steel under Different Iron Oxide Deposits in the District Heating System |
title_fullStr |
Corrosion Behavior of Pipeline Carbon Steel under Different Iron Oxide Deposits in the District Heating System |
title_full_unstemmed |
Corrosion Behavior of Pipeline Carbon Steel under Different Iron Oxide Deposits in the District Heating System |
title_sort |
corrosion behavior of pipeline carbon steel under different iron oxide deposits in the district heating system |
publisher |
MDPI AG |
series |
Metals |
issn |
2075-4701 |
publishDate |
2017-05-01 |
description |
The corrosion behavior of pipeline steel covered by iron oxides (α-FeOOH; Fe3O4 and Fe2O3) was investigated in simulated district heating water. In potentiodynamic polarization tests; the corrosion rate of pipeline steel is increased under the iron oxide but the increaseing rate is different due to the differnet chemical reactions of the covered iron oxides. Pitting corrosion was only observed on the α-FeOOH-covered specimen; which is caused by the crevice corrosion under the α-FeOOH. From Mott-Schottky and X-ray diffraction results; the surface reaction and oxide layer were dependent on the kind of iron oxides. The iron oxides deposit increases the failure risk of the pipeline and localized corrosion can be occurred under the α-FeOOH-covered region of the pipeline. Thus, prevention methods for the iron oxide deposit in the district pipeline system such as filtering or periodic chemical cleaning are needed. |
topic |
corrosion polarization iron oxide Mott-Schottky carbon steel |
url |
http://www.mdpi.com/2075-4701/7/5/182 |
work_keys_str_mv |
AT yongsangkim corrosionbehaviorofpipelinecarbonsteelunderdifferentironoxidedepositsinthedistrictheatingsystem AT junggukim corrosionbehaviorofpipelinecarbonsteelunderdifferentironoxidedepositsinthedistrictheatingsystem |
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