Aluminum sulfur pollutants effect

Tables 2.3-2.6 and Fig. 2.2 give historic data on corrosion resistance of zinc classified subjectively by environment. The qualitative terms used by authors clearly have different corrosion significance in different parts of the world. Some work for which atmospheric pollution data is available is given in Table 2.7A together with a supplement. Table 2.7B. Averages of six l-year tests in the worldwide ISOCORRAG series, still in progress, have been published, however (Knotkova, 1993) the full data cover steel, copper, and aluminum as well as zinc. The interpretation of measurements of atmospheric sulfur dioxide and chloride is not clear-cut different measurement techniques can give substantially different results, and the relationship between corrosion effects and the particular method of measurement requires further interpretation.

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