Effect of NO2 and/or SO2 atmospheric contaminants and relative humidity on copper corrosion
Keywords:Copper, XPS, Humidity, N02. SO2, Atmospheric corrosion
A study has been made of the individual and combined roles of NO2 and SO2 atmospheric contaminants on corrosion and patina formation on copper in humid atmospheres. In most cases the combined effect of the two contaminants has been greater than the sum of their individual effects, although exception have been found with the mixture of 800 μg/m+3NO2 + 800 μg/m+3 SO2- XPS analysis has revealed important composition changes in the outermost layer of films formed on copper, depending on the nature of the atmospheric contaminant and humidity level. The presence of sulphates and sulphites has been clearly observed in exposure to atmospheres contaminated with SO2 at 50, 70 and 90 % RH. Nitrates and nitrites have been detected in exposure to NO2 at 50 and 70 %RH, but not at 90 % RH. A hydrogenated nitrogen compound has been detected with the mixture of NO2 and SO2 at 90 % RH .In this atmosphere, a certain inhibiting effect has been seen.
Download data is not yet available.
How to Cite
Feliu, S., Mariaca, L., Simancas, J., González, J. A., & Morcillo, M. (2003). Effect of NO2 and/or SO2 atmospheric contaminants and relative humidity on copper corrosion. Revista De Metalurgia, 39(4), 278–288. https://doi.org/10.3989/revmetalm.2003.v39.i4.339
Copyright (c) 2003 Consejo Superior de Investigaciones Científicas (CSIC)
This work is licensed under a Creative Commons Attribution 4.0 International License.© CSIC. Manuscripts published in both the printed and online versions of this Journal are the property of Consejo Superior de Investigaciones Científicas, and quoting this source is a requirement for any partial or full reproduction.
All contents of this electronic edition, except where otherwise noted, are distributed under a “Creative Commons Attribution 4.0 International” (CC BY 4.0) License. You may read here the basic information and the legal text of the license. The indication of the CC BY 4.0 License must be expressly stated in this way when necessary.
Self-archiving in repositories, personal webpages or similar, of any version other than the published by the Editor, is not allowed.