Effect of trace organic compounds on the corrosion of Cu/Ni alloys in sulfide polluted seawater

Journal Article · Sat May 01 00:00:00 EDT 1993 · Industrial and Engineering Chemistry Research; (United States)

DOI:https://doi.org/10.1021/ie00017a027· OSTI ID:6347474

Reda, M R; Al-Hajji, J N ^[1]

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1. Kuwait Univ., Sufat (Kuwait)

Trace organic complexing agents were investigated to check their ability to reduce the relatively high corrosion rates of Cu/Ni alloys in sulfide polluted seawater. It is found that an organic complexing agent such as fuchsin in the concentration range of 5 ppm is an excellent inhibitor against uniform and localized attack for 70/30 Cu/Ni alloy in 2 ppm sulfide polluted seawater. Another metal complexing agent, SSA (5-sulfosalicylic acid), was found to be effective for the 90/10 Cu/Ni alloy against enhanced attack by sulfide polluted seawater while it was ineffective for 70/30 Cu/Ni alloy. EDTA (ethylene diaminetetraacetic acid disodium salt) was found to be ineffective for both Cu/Ni alloys when used by itself in the concentration range of 5 ppm. A mechanism is proposed to explain the effectiveness of the various selected trace organic complexing agents on the corrosiveness of sulfide polluted seawater.

• OSTI ID: 6347474
• Journal Information: Industrial and Engineering Chemistry Research; (United States), Journal Name: Industrial and Engineering Chemistry Research; (United States) Vol. 32:5; ISSN IECRED; ISSN 0888-5885
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
54 ENVIRONMENTAL SCIENCES
540320 -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
ALLOYS
CARBOXYLIC ACIDS
CHALCOGENIDES
COPPER ALLOYS
COPPER BASE ALLOYS
CORROSION INHIBITORS
CORROSION PROTECTION
CORROSIVE EFFECTS
HYDROGEN COMPOUNDS
HYDROXY ACIDS
NICKEL ALLOYS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXYGEN COMPOUNDS
PERFORMANCE TESTING
POLLUTANTS
POLLUTION
SALICYLIC ACID
SEAWATER
SULFIDES
SULFUR COMPOUNDS
TESTING
WATER
WATER POLLUTION