Laboratory scale tests on corrosion behavior of boiler materials in simulated combustion atmospheres (EU Project - OPTICORR)

S. Sroda (Corresponding Author), Satu Tuurna

Research output: Contribution to journalArticleScientificpeer-review

13 Citations (Scopus)

Abstract

Laboratory scale tests were made in the Plant Simulation Test Laboratory (PSTL) at JRC IE Petten and at VTT Industrial Systems in Finland. The multi‐sample exposure tests were carried out under isothermal conditions at temperatures of 500 and 600 °C in N2‐8% O2‐15% H2O, N2‐8% O2‐15% H2O‐2000 vppm HCl and N2‐8% O2‐15% H2O‐200 vppm SO2 atmospheres. The experiments were focused mainly on common ferritic and austenitic steels such as X10, X20, 2.25Cr1Mo, AC66, Sanicro28, Esshette 1250 etc. A Scanning Electron Microscope (SEM), with Energy Dispersive Spectrometer (EDS), and X‐ray diffraction (XRD) techniques were used to determine the chemical and phase composition of the corrosion products. The obtained results show that the presence of SO2 generally suppresses the oxidation rate of ferritic materials. Suppression of the oxidation rate in an SO2 containing atmosphere could be due to the presence of sulphides at metal/scale interfaces , which probably influences the ion transport through the oxide scale. When the oxidation reaction is surface controlled, absorbed sulphates interfere with the reaction of the oxygen on the surface. The presence of HCl in moist air at temperatures of 500 °C and 600 °C accelerates the oxidation rate of the studied materials, especially for the ferritic steels. The SEM/EDS studies suggest that in HCl containing atmospheres the corrosion mechanism is „active oxidation”︁.
Original languageEnglish
Pages (from-to)244-251
Number of pages8
JournalMaterials and Corrosion
Volume57
Issue number3
DOIs
Publication statusPublished - 2006
MoE publication typeA1 Journal article-refereed

Fingerprint

Boilers
corrosion
combustion
Corrosion
oxidation
Oxidation
atmosphere
Ferritic steel
Spectrometers
spectrometer
Electron microscopes
steel
Scanning
electron
Austenitic steel
Surface reactions
Sulfides
Phase composition
Oxides
diffraction

Keywords

  • combustion environment
  • active oxidation
  • HCl
  • SO2
  • exposure tests
  • austenitic stainless steels
  • ferritic steels
  • SEM
  • EDS
  • XRD

Cite this

@article{c7f132accbe34b96abb94494bb9fac1a,
title = "Laboratory scale tests on corrosion behavior of boiler materials in simulated combustion atmospheres (EU Project - OPTICORR)",
abstract = "Laboratory scale tests were made in the Plant Simulation Test Laboratory (PSTL) at JRC IE Petten and at VTT Industrial Systems in Finland. The multi‐sample exposure tests were carried out under isothermal conditions at temperatures of 500 and 600 °C in N2‐8{\%} O2‐15{\%} H2O, N2‐8{\%} O2‐15{\%} H2O‐2000 vppm HCl and N2‐8{\%} O2‐15{\%} H2O‐200 vppm SO2 atmospheres. The experiments were focused mainly on common ferritic and austenitic steels such as X10, X20, 2.25Cr1Mo, AC66, Sanicro28, Esshette 1250 etc. A Scanning Electron Microscope (SEM), with Energy Dispersive Spectrometer (EDS), and X‐ray diffraction (XRD) techniques were used to determine the chemical and phase composition of the corrosion products. The obtained results show that the presence of SO2 generally suppresses the oxidation rate of ferritic materials. Suppression of the oxidation rate in an SO2 containing atmosphere could be due to the presence of sulphides at metal/scale interfaces , which probably influences the ion transport through the oxide scale. When the oxidation reaction is surface controlled, absorbed sulphates interfere with the reaction of the oxygen on the surface. The presence of HCl in moist air at temperatures of 500 °C and 600 °C accelerates the oxidation rate of the studied materials, especially for the ferritic steels. The SEM/EDS studies suggest that in HCl containing atmospheres the corrosion mechanism is „active oxidation”︁.",
keywords = "combustion environment, active oxidation, HCl, SO2, exposure tests, austenitic stainless steels, ferritic steels, SEM, EDS, XRD",
author = "S. Sroda and Satu Tuurna",
note = "Project code: H1SU00900",
year = "2006",
doi = "10.1002/maco.200503931",
language = "English",
volume = "57",
pages = "244--251",
journal = "Materials and Corrosion",
issn = "0947-5117",
publisher = "Wiley",
number = "3",

}

Laboratory scale tests on corrosion behavior of boiler materials in simulated combustion atmospheres (EU Project - OPTICORR). / Sroda, S. (Corresponding Author); Tuurna, Satu.

In: Materials and Corrosion, Vol. 57, No. 3, 2006, p. 244-251.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Laboratory scale tests on corrosion behavior of boiler materials in simulated combustion atmospheres (EU Project - OPTICORR)

AU - Sroda, S.

AU - Tuurna, Satu

N1 - Project code: H1SU00900

PY - 2006

Y1 - 2006

N2 - Laboratory scale tests were made in the Plant Simulation Test Laboratory (PSTL) at JRC IE Petten and at VTT Industrial Systems in Finland. The multi‐sample exposure tests were carried out under isothermal conditions at temperatures of 500 and 600 °C in N2‐8% O2‐15% H2O, N2‐8% O2‐15% H2O‐2000 vppm HCl and N2‐8% O2‐15% H2O‐200 vppm SO2 atmospheres. The experiments were focused mainly on common ferritic and austenitic steels such as X10, X20, 2.25Cr1Mo, AC66, Sanicro28, Esshette 1250 etc. A Scanning Electron Microscope (SEM), with Energy Dispersive Spectrometer (EDS), and X‐ray diffraction (XRD) techniques were used to determine the chemical and phase composition of the corrosion products. The obtained results show that the presence of SO2 generally suppresses the oxidation rate of ferritic materials. Suppression of the oxidation rate in an SO2 containing atmosphere could be due to the presence of sulphides at metal/scale interfaces , which probably influences the ion transport through the oxide scale. When the oxidation reaction is surface controlled, absorbed sulphates interfere with the reaction of the oxygen on the surface. The presence of HCl in moist air at temperatures of 500 °C and 600 °C accelerates the oxidation rate of the studied materials, especially for the ferritic steels. The SEM/EDS studies suggest that in HCl containing atmospheres the corrosion mechanism is „active oxidation”︁.

AB - Laboratory scale tests were made in the Plant Simulation Test Laboratory (PSTL) at JRC IE Petten and at VTT Industrial Systems in Finland. The multi‐sample exposure tests were carried out under isothermal conditions at temperatures of 500 and 600 °C in N2‐8% O2‐15% H2O, N2‐8% O2‐15% H2O‐2000 vppm HCl and N2‐8% O2‐15% H2O‐200 vppm SO2 atmospheres. The experiments were focused mainly on common ferritic and austenitic steels such as X10, X20, 2.25Cr1Mo, AC66, Sanicro28, Esshette 1250 etc. A Scanning Electron Microscope (SEM), with Energy Dispersive Spectrometer (EDS), and X‐ray diffraction (XRD) techniques were used to determine the chemical and phase composition of the corrosion products. The obtained results show that the presence of SO2 generally suppresses the oxidation rate of ferritic materials. Suppression of the oxidation rate in an SO2 containing atmosphere could be due to the presence of sulphides at metal/scale interfaces , which probably influences the ion transport through the oxide scale. When the oxidation reaction is surface controlled, absorbed sulphates interfere with the reaction of the oxygen on the surface. The presence of HCl in moist air at temperatures of 500 °C and 600 °C accelerates the oxidation rate of the studied materials, especially for the ferritic steels. The SEM/EDS studies suggest that in HCl containing atmospheres the corrosion mechanism is „active oxidation”︁.

KW - combustion environment

KW - active oxidation

KW - HCl

KW - SO2

KW - exposure tests

KW - austenitic stainless steels

KW - ferritic steels

KW - SEM

KW - EDS

KW - XRD

U2 - 10.1002/maco.200503931

DO - 10.1002/maco.200503931

M3 - Article

VL - 57

SP - 244

EP - 251

JO - Materials and Corrosion

JF - Materials and Corrosion

SN - 0947-5117

IS - 3

ER -