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@article{2deb8844a8af45478133e0f6386397d2,
title = "Effect of flue gas composition on deposit induced high temperature corrosion under laboratory conditions mimicking biomass firing. Part II: Exposures in SO2 containing atmospheres",
abstract = "In biomass fired power plants, the fast corrosion of superheaters is facilitatedby the presence of corrosive flue gas species, for example, SO2, which arereleased during combustion. To understand the role of the gas species on thecorrosion process, comparative laboratory exposures of deposit (KCl)-coatedand deposit-free austenitic stainless steel (TP 347H FG) samples to gas mixturescontaining SO2 was carried out, under conditions relevant to biomass-firing.Exposures were conducted isothermally at 560 8C for 72 h, in oxidizingsulphidizing,and oxidizing-sulphidizing-chlorinating gas mixtures containing60 ppmv SO2. Scanning electron microscopy (SEM), energy dispersive X-rayspectroscopy (EDS) and X-ray diffraction (XRD) techniques werecomplimentarily applied to characterize the resulting corrosion products. Apartially molten K2SO4-layer formed on KCl coated specimens, and corrosionresulted in localized broad pits containing sulphides and oxides. The severepitting attack was decreased by the presence of HCl in the gas mixture.",
author = "Okoro, {Sunday Chukwudi} and Saeed Kiamehr and Melanie Montgomery and {Jappe Frandsen}, Flemming and Karen Pantleon",
year = "2017",
doi = "10.1002/maco.201609174",
language = "English",
volume = "68",
pages = "515--528",
journal = "Materials and Corrosion",
issn = "0947-5117",
publisher = "Wiley - V C H Verlag GmbH & Co. KGaA",
number = "5",

}

RIS

TY - JOUR

T1 - Effect of flue gas composition on deposit induced high temperature corrosion under laboratory conditions mimicking biomass firing. Part II: Exposures in SO2 containing atmospheres

AU - Okoro, Sunday Chukwudi

AU - Kiamehr, Saeed

AU - Montgomery, Melanie

AU - Jappe Frandsen, Flemming

AU - Pantleon, Karen

PY - 2017

Y1 - 2017

N2 - In biomass fired power plants, the fast corrosion of superheaters is facilitatedby the presence of corrosive flue gas species, for example, SO2, which arereleased during combustion. To understand the role of the gas species on thecorrosion process, comparative laboratory exposures of deposit (KCl)-coatedand deposit-free austenitic stainless steel (TP 347H FG) samples to gas mixturescontaining SO2 was carried out, under conditions relevant to biomass-firing.Exposures were conducted isothermally at 560 8C for 72 h, in oxidizingsulphidizing,and oxidizing-sulphidizing-chlorinating gas mixtures containing60 ppmv SO2. Scanning electron microscopy (SEM), energy dispersive X-rayspectroscopy (EDS) and X-ray diffraction (XRD) techniques werecomplimentarily applied to characterize the resulting corrosion products. Apartially molten K2SO4-layer formed on KCl coated specimens, and corrosionresulted in localized broad pits containing sulphides and oxides. The severepitting attack was decreased by the presence of HCl in the gas mixture.

AB - In biomass fired power plants, the fast corrosion of superheaters is facilitatedby the presence of corrosive flue gas species, for example, SO2, which arereleased during combustion. To understand the role of the gas species on thecorrosion process, comparative laboratory exposures of deposit (KCl)-coatedand deposit-free austenitic stainless steel (TP 347H FG) samples to gas mixturescontaining SO2 was carried out, under conditions relevant to biomass-firing.Exposures were conducted isothermally at 560 8C for 72 h, in oxidizingsulphidizing,and oxidizing-sulphidizing-chlorinating gas mixtures containing60 ppmv SO2. Scanning electron microscopy (SEM), energy dispersive X-rayspectroscopy (EDS) and X-ray diffraction (XRD) techniques werecomplimentarily applied to characterize the resulting corrosion products. Apartially molten K2SO4-layer formed on KCl coated specimens, and corrosionresulted in localized broad pits containing sulphides and oxides. The severepitting attack was decreased by the presence of HCl in the gas mixture.

U2 - 10.1002/maco.201609174

DO - 10.1002/maco.201609174

M3 - Journal article

VL - 68

SP - 515

EP - 528

JO - Materials and Corrosion

JF - Materials and Corrosion

SN - 0947-5117

IS - 5

ER -