The rusts on the gauge face and non-gauge face of two rail steels (traditional C-Mn and novel Cu-Mo rail steel) exposed to a coastal location in India were characterised after two years of service to correlate with an apparent visual observation of a lower corrosion rate in the case of the Cu-Mo rails. Rust samples were characterised by X-ray diffraction, Fourier transform infrared spectroscopy and Mössbauer spectroscopy. X-ray diffraction patterns showed diffuse peaks indicating poorly crystallised rust phases, while the phases identified by the other techniques were gamma-FeOOH (lepidocrocite),alpha-FeOOH (goethite), Fe(3-x)O4 (magnetite), delta-FeOOH and alpha-Fe2O3 (haematite). The enhanced corrosion of the gauge face compared to non-gauge face for both rails and that of C-Mn rails compared to Cu-Mo rails was related to the higher amount of gamma-FeOOH and lower amount of Fe(3-x)O4.
Characterisation of rust on microalloyed rail steel exposed to coastal location in India
Untersuchung von Rost auf mikrolegiertem Schienenstahl in Küstenatmosphäre Indiens
Corrosion Engineering, Science and Technology ; 44 , 4 ; 275-279
2009
5 Seiten, 3 Bilder, 2 Tabellen, 29 Quellen
Article (Journal)
English
Quality of transeutectoidal steel rail microalloyed with vanadium and nitrogen
Tema Archive | 2005
|Microalloyed steel for railroad wheels
Tema Archive | 2008
|Microalloyed steel for railway wheels
Tema Archive | 2008
|