In-situ studies of the initial atmospheric corrosion of iron
2002 (English)In: OUTDOOR ATMOSPHERIC CORROSION, 2002, Vol. 1421, 127-138 p.Conference paper (Other academic)
A unique experimental setup has been developed with the intent to provide molecular information during initial atmospheric corrosion of the iron surface. Infrared reflection absorption spectroscopy (IRAS) and quartz crystal microbalance (QCM) have been integrated into one surface analytical system. The results show that an aqueous adlayer of constant mass was physisorbed on the surface at a given relative humidity. The aqueous adlayer was found to be thicker when compared to previous studies performed on copper. A linear relationship between mass change and the intensity of the water absorption band at 3400 cm(-1) (IRAS) was found when altering the relative humidity. At high relative humidity a thick aqueous adlayer was formed, whereby an absorbance band at 1100 cm(-1) was observed that disappeared when dry air was introduced. When introducing SO2 and O-3 in the sub-ppm range, the formation of sulfate surface species could be monitored quantitatively with monolayer sensitivity and a significant increase in reaction kinetics could be discerned.
Place, publisher, year, edition, pages
2002. Vol. 1421, 127-138 p.
, AMERICAN SOCIETY FOR TESTING AND MATERIALS SPECIAL TECHNICAL PUBLICATION, ISSN 1040-1695
iron; IRAS; QCM; O-3; SO2; corrosion; in-situ; AFM; SEM
IdentifiersURN: urn:nbn:se:kth:diva-49048DOI: 10.1520/STP10888SISI: 000180883000010OAI: oai:DiVA.org:kth-49048DiVA: diva2:459136
Symposium on Outdoor Atmospheric Corrosion. PHOENIX, AZ. MAY 08-09, 2001
QC 201111282011-11-242011-11-242011-11-28Bibliographically approved