Abstract
An experimental study was conducted on the erosion-corrosion behavior of three alloys in seawater-sand slurries. The idea explored was to select a steel, a copper alloy, and a titanium alloy, which should have good resistance to abrasive wear because of high hardness (within their alloy classes). Then cathodic pro-tection would be used to protect them from corrosion. The alloys studied were 4340 steel, silicon bronze, and titanium alloy Ti-6V-4Al. Limiting conditions for cathodic protection were derived from electro-chemical polarization measurements. From erosion-corrosion tests, it was found that erosive wear by sand dominated the metal loss rates of both silicon bronze and Ti-6V-4Al. For the 4340 steel, which was the hardest material, cathodic protection provided good erosion-corrosion resistance. Supplementary measurements showed that ductility loss due to cathodically charged hydrogen in the 4340 steel was neg-ligible under the experimental conditions.
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References
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Yang, J., Swisher, J.H. Erosion-corrosion behavior and cathodic protection of alloys in seawater-sand slurries. JMEP 2, 843–850 (1993). https://doi.org/10.1007/BF02645684
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DOI: https://doi.org/10.1007/BF02645684