Crevice corrosion and metal-ion concentration cell-corrosion resistance of candidate materials for OTEC heat exchangers, Parts I and II

Technical Report · Fri May 01 04:00:00 EDT 1981

DOI:https://doi.org/10.2172/5989266· OSTI ID:5989266

Kain, R. M.

Two separate studies are reported. In the first, titanium, stainless alloy AL-6X, Alclad 3003, aluminum alloy 5052, C70600, C72200 and Cu-10Ni-8Sn sheet materials were exposed to ambient temperature, low velocity seawater for 6 months and crevice corrosion and metal-ion concentration cell corrosion evaluations were conducted. Conditions were sufficiently critical to initiate crevice attack on control samples of Type 316 stainless steel. While no evidence of corrosion was detected for titanium and AL-6X, the five aluminum and copper base alloys all exhibited varying degrees of general and/or localized attack. In the second study, laboratory tests in low velocity, filtered seawater at 30/sup 0/C resulted in initiation of crevice attack for 12 of the 13 stainless alloys included in the evaluation. For the most part, evidence of crevice corrosion initiation was detected within the first 30 days of exposure, although considerable variation in the observed time to initiation of crevice corrosion was noted. (LEW)

• Research Organization: Argonne National Lab., IL (USA); LaQue Center for Corrosion Technology, Inc., Wrightsville Beach, NC (USA)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5989266
• Report Number(s): ANL/OTEC-BCM-022; ON: DE82000909
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140800* -- Solar Energy-- Ocean Energy Systems
36 MATERIALS SCIENCE
360105 -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
ALUMINIUM ALLOYS
ALUMINIUM BASE ALLOYS
CHEMICAL REACTIONS
COPPER ALLOYS
COPPER BASE ALLOYS
CORROSION
CORROSIVE EFFECTS
CREVICE CORROSION
ELEMENTS
HEAT EXCHANGERS
HYDROGEN COMPOUNDS
METALS
OXYGEN COMPOUNDS
SEAWATER
TESTING
TITANIUM
TRANSITION ELEMENTS
WATER