Two wrought piping alloys, 70-30 and 90-10 copper-nickel, were each galvanically coupled to each of four fitting alloys in sulfide-modified seawater for 30 days. The fitting alloys used were bronze (Composition M), cast Monel, wrought nickel-aluminum bronze, and cast 70-30 copper-nickel. The piping material/fitting material area ratio was 3:1, and the seawater velocity was 2.4 meters per second. Results indicated that the galvanic relationship between M-bronze or Monel and 70-30 copper-nickel is affected by sulfide additions in a manner that increases the corrosion of the fitting material, whereas similar couples with 90-10 copper-nickel show little effect of sulfide. (DePo)
Galvanic corrosion of piping and fitting alloys in sulfide-modified seawater
Galvanische Korrosion von Rohrleitungs- und Beschlaegelegierungen in sulfidmodifiziertem Meerwasser
US Government Research Reports ; May ; 1-31
1979
31 Seiten
Report
English
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