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10109 AC-Induced Corrosion on Passive Metals

Picture for 10109 AC-Induced Corrosion on Passive Metals
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Product Number: 51300-10109-SG
ISBN: 10109 2010 CP
Author: M. Ormellese, L. Lazzari, and A. Brenna
Publication Date: 2010
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The effect of AC-induced interference on the localised corrosion resistance of passive metals is analysed and discussed on the basis of laboratory test results. Two conditions were considered: 1. AC interference on stainless steel specimens in neutral solution varying chlorides concentration; 2. AC interference on carbon steel rebar in chloride containing concrete. Applied AC was in the range of 10 A/m2 to 500 A/m2. Results allow evaluating the effect of AC on: time-to-corrosion, critical chloride threshold, AC critical current density and corrosion morphology.

Keywords: AC interference, passive metals, critical chlorides threshold, concrete, stainless steel
The effect of AC-induced interference on the localised corrosion resistance of passive metals is analysed and discussed on the basis of laboratory test results. Two conditions were considered: 1. AC interference on stainless steel specimens in neutral solution varying chlorides concentration; 2. AC interference on carbon steel rebar in chloride containing concrete. Applied AC was in the range of 10 A/m2 to 500 A/m2. Results allow evaluating the effect of AC on: time-to-corrosion, critical chloride threshold, AC critical current density and corrosion morphology.

Keywords: AC interference, passive metals, critical chlorides threshold, concrete, stainless steel
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