| Autor: |
Okoro, Sunday Chukwudi, Kiamehr, Saeed, Montgomery, Melanie, Jappe Frandsen, Flemming, Pantleon, Karen |
| Jazyk: |
angličtina |
| Rok vydání: |
2017 |
| Zdroj: |
Okoro, S C, Kiamehr, S, Montgomery, M, Jappe Frandsen, F & Pantleon, K 2017, ' Effect of flue gas composition on deposit induced high temperature corrosion under laboratory conditions mimicking biomass firing. Part II: Exposures in SO 2 containing atmospheres ', Materials and Corrosion, vol. 68, no. 5, pp. 515-528 . https://doi.org/10.1002/maco.201609174 |
| DOI: |
10.1002/maco.201609174 |
| Popis: |
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. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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