Corrosion of Stainless Steel by Urea at High Temperature

The corrosion mechanism of stainless steel caused by high temperature decomposition of aqueous urea solution has been investigated. The relationship between aqueous urea solution, its thermal decomposition products and the corrosion mechanism of stainless steel is studied by FTIR spectroscopy, SEM a...

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Main Authors: Anastasiia Galakhova, Fabian Kadisch, Gregor Mori, Susanne Heyder, Helmut Wieser, Bernhard Sartory, Simon Burger
Format: Article
Language:English
Published: MDPI AG 2021-08-01
Series:Corrosion and Materials Degradation
Subjects:
Online Access:https://www.mdpi.com/2624-5558/2/3/24
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author Anastasiia Galakhova
Fabian Kadisch
Gregor Mori
Susanne Heyder
Helmut Wieser
Bernhard Sartory
Simon Burger
author_facet Anastasiia Galakhova
Fabian Kadisch
Gregor Mori
Susanne Heyder
Helmut Wieser
Bernhard Sartory
Simon Burger
author_sort Anastasiia Galakhova
collection DOAJ
description The corrosion mechanism of stainless steel caused by high temperature decomposition of aqueous urea solution has been investigated. The relationship between aqueous urea solution, its thermal decomposition products and the corrosion mechanism of stainless steel is studied by FTIR spectroscopy, SEM and stereo microscopy. The corroded steel samples, together with deposits, were obtained from the injection of aqueous urea solution on the steel plate at high temperatures. Uniform corrosion underneath the deposits was proposed as the main driver for corrosion of the steel samples. At the crevices, corrosion due to the used geometry and due to high temperature cycling could play an acceleration role as well.
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spelling doaj.art-52c68c5134664ffd84809326444bac982023-11-22T12:32:50ZengMDPI AGCorrosion and Materials Degradation2624-55582021-08-012346147310.3390/cmd2030024Corrosion of Stainless Steel by Urea at High TemperatureAnastasiia Galakhova0Fabian Kadisch1Gregor Mori2Susanne Heyder3Helmut Wieser4Bernhard Sartory5Simon Burger6Chair of General and Analytical Chemistry, Montanuniversität Leoben, 8700 Leoben, AustriaChair of General and Analytical Chemistry, Montanuniversität Leoben, 8700 Leoben, AustriaChair of General and Analytical Chemistry, Montanuniversität Leoben, 8700 Leoben, AustriaFaculty of Mechanical and Process Engineering, Augsburg University of Applied Sciences, 86161 Augsburg, GermanyFaculty of Mechanical and Process Engineering, Augsburg University of Applied Sciences, 86161 Augsburg, GermanyMaterials Center Leoben Forschung GmbH, 8700 Leoben, AustriaFaurecia Emissions Control Technologies, Germany GmbH, 86154 Augsburg, GermanyThe corrosion mechanism of stainless steel caused by high temperature decomposition of aqueous urea solution has been investigated. The relationship between aqueous urea solution, its thermal decomposition products and the corrosion mechanism of stainless steel is studied by FTIR spectroscopy, SEM and stereo microscopy. The corroded steel samples, together with deposits, were obtained from the injection of aqueous urea solution on the steel plate at high temperatures. Uniform corrosion underneath the deposits was proposed as the main driver for corrosion of the steel samples. At the crevices, corrosion due to the used geometry and due to high temperature cycling could play an acceleration role as well.https://www.mdpi.com/2624-5558/2/3/24stainless steelureabiuretcyanuric acidammelidemelamine
spellingShingle Anastasiia Galakhova
Fabian Kadisch
Gregor Mori
Susanne Heyder
Helmut Wieser
Bernhard Sartory
Simon Burger
Corrosion of Stainless Steel by Urea at High Temperature
Corrosion and Materials Degradation
stainless steel
urea
biuret
cyanuric acid
ammelide
melamine
title Corrosion of Stainless Steel by Urea at High Temperature
title_full Corrosion of Stainless Steel by Urea at High Temperature
title_fullStr Corrosion of Stainless Steel by Urea at High Temperature
title_full_unstemmed Corrosion of Stainless Steel by Urea at High Temperature
title_short Corrosion of Stainless Steel by Urea at High Temperature
title_sort corrosion of stainless steel by urea at high temperature
topic stainless steel
urea
biuret
cyanuric acid
ammelide
melamine
url https://www.mdpi.com/2624-5558/2/3/24
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