ISSN:
0142-2421
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Physics
Notes:
XPS spectra of electrochemically formed passive films on Fe electrodes exposed to chloride ions, revealed chemical and physical changes in the films as a result of coming in contact with these ions. An enhanced C species signal with increasing exposure time to chloride ions was accounted for by increased chemical reactivity of the passive films toward hydrocarbons, due to the loss of hydroxyl groups and water, as well as to the creation of surface defect sites. An increasingly high binding energy O signal with increasing chloride ion exposure time was found to be due to physisorbed O species on an enlarged area, caused by a depolymerization or a pore breakdown mechanism in the passive layers. Chloride ion was not observed in the XPS spectra of the passive layers.
Additional Material:
4 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/sia.740040304
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