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Galvanic Corrosion Prediction Using Long- and Short-Term Polarization Curves,
Authors: H. P. Hack; J. R. Scully |
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Abstract:
Long-term potentiostatic polarization curves of up to 120 days duration were developed for the following materials in seawater: 90:10 copper:nickel (C70600), Monel 400 (N04400), Inconel 625 (N06625), Navy M-bronze (C92200), nickel-aluminum bronze (C95800), HY-80 steel, titanium 50 (R50400), 70:30 copper:nickel (C71500) and anode grade zinc (MIL-STD 18001). In addition, short-term potentiodynamic polarization curves were developed at four scan rates and two pre-exposure levels for all materials. The scan rates used ranged from 0.5 to 100 V/h, and pre-exposure times were 1 h and 120 days. Long-term potentiostatic and potentiodynamic data were used to predict the behavior of actual two and three metal couples. The predictions had a level of accuracy equal, or superior to, the conventional galvanic corrosion prediction techniques using galvanic corrosion rate tables or corrosion potential differences.
| Description: |
Journal Article |
| Pages: |
12 |
| Report Date: |
FEB 1986 |
| Report Number: |
D657431 |
Report Unavailable |
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