Peptide interactions with steel surfaces: Inhibition of corrosion and calcium carbonate precipitation

Journal Article · Fri Oct 01 00:00:00 EDT 1993 · Corrosion (Houston); (United States)

DOI:https://doi.org/10.5006/1.3316006· OSTI ID:5857377

Mueller, E; Sikes, C S ^[1]; Little, B J ^[2]

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1. Univ. of South Alabama, Mobile, AL (United States). Mineralization Center
2. Stennis Space Center, MS (United States). Naval Research Lab.

Polyaspartate, a polyanionic peptide analog of an oyster-shell protein fraction, inhibited corrosion of AISI 1018 mild steel (UNS G10180) in seawater in a dose-dependent manner. A maximal inhibition of [approximately] 60% was obtained at a concentration of 100[mu]g mL[sup [minus]1]. Related peptides containing hydrophobic and/or phosphorylated amino acids had corrosion inhibition activities similar to or lower than polyaspartate in fresh and brackish waters. Binding studies demonstrated polyaspartate bound to mild steel in a dose- and time-dependent manner. Evidence for stainless steel (SS) binding was based on inhibition of calcium carbonate precipitation of the SS surface.

• OSTI ID: 5857377
• Journal Information: Corrosion (Houston); (United States), Vol. 49:10; ISSN 0010-9312
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CALCIUM CARBONATES
PRECIPITATION
PEPTIDES
CORROSION RESISTANCE
STAINLESS STEEL-304
CORROSION
CORROSION INHIBITORS
SEAWATER
ALKALINE EARTH METAL COMPOUNDS
ALLOYS
AUSTENITIC STEELS
CALCIUM COMPOUNDS
CARBON COMPOUNDS
CARBONATES
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HIGH ALLOY STEELS
HYDROGEN COMPOUNDS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
NICKEL ALLOYS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PROTEINS
SEPARATION PROCESSES
STAINLESS STEELS
STEEL-CR19NI10
STEELS
WATER
360105* - Metals & Alloys- Corrosion & Erosion