A SERS INVESTIGATION OF THE PASSIVE FILMS FORMED ON IRON IN MILDLY ALKALINE-SOLU

2020-04-05 19:31:57

Fe corrosion 10 Iron formed

责任者: GUI, J;DEVINE, TM 单位: 来源出处: CORROSION SCIENCE, v 37, AUG 1995, p 1177- 1189 摘要: ln-situ surface enhanced Raman spectra were obtained for the passive films formed on iron in two different aqueous solutions: 0.3 M NaNO3 (unbuffered pH = 10) and 0.15 M Na-2 CO3 + 0.15 M NaHCO3 (buffered pH = 10). The results indicate that the films formed in the nitrate and carbonate solutions are somewhat alike, independent of potential (over the range of -400 mV - +100 mV), and consist of a mixture of species similar to microcrystalline/amorphous Fe(OH)(2) + Fe-3 O-4/gamma-Fe-2 O-3. The results of the present and earlier studies indicate that the oxidation rate of iron is a strong function of the identity of the anion but that the passive film formed on iron in a mildly alkaline solution is nearly independent of the anion. 关键词: CHRYSOTILE ASBESTOS; QUANTUM WIRES; ABSORPTION SPECTRA; CONDUCTIVITY; RAMAN-SPECTROSCOPY; CORROSION FILMS; ELECTRODES; SPECTRA; SCATTERING; PRODUCTS; SURFACE; RANGE; XPS; FE PRODUCTS; SURFACE; RANGE; XPS; FE