An experimental technique quickly determines the integrity of surface treatments on steel. These treatments include tinplate, electrochemically produced chromium-chromium oxide and chromium phosphate type coatings, and any other film forming treatments. A quantitative relationship between rate of iron dissolution and surface treatment coverage is established. Continuous measurements of the rate of iron dissolution from a definite sample area also show the ability of some commercial surface treatments to prevent corrosion. Important experimental variables were temperature, rate of agitation, and corrodent solution composition.

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© 1971 National Association of Corrosion Engineers
1971
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