The biocorrosion of copper by biopolymers as examined in situ, in real time FT-IR/CIR/ATR in conjunction with pre and post XPS/AES

Conference · Sun Jan 01 04:00:00 EST 1989

OSTI ID:5424035

Gianotto, A. K.; Wichlacz, P. L.; Jolley, J. G.; Hankins, M. R.; Geesey, G. G.; Wright, R. B. ^[1]

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1. EG and G Idaho, Inc., Idaho Falls, ID (USA)

Thin films of copper (2.0 nm on germanium internal reflection elements (IREs) and 3.4 nm on germanium discs) were exposed to 10% gum arabic (aqueous solution), 2% alginic acid (aqueous solution), 1% bacterial culture supernatant (BCS, simulated seawater solution) and 0.5% Pseudomonas atlantica exopolymer (simulated seawater solution). The IREs were monitored in situ, in real time using fourier transform infrared/cylindrical internal reflection/attenuated total reflection spectroscopy as a function of time at ambient conditions. The discs were characterized (pre- and post-exposure) by x-ray photoelectron and Auger electron spectroscopies. Ancillary graphite furnace atomic absorption spectroscopy was used to monitor the removal process of the copper thin film from the germanium substrates. Results indicate that Cu was oxidized by gum arabic, alginic acid and BCS. Furthermore, Cu was removed from the Cu/Ge interface by all four polymers. The Cu was found associated with the polymer solutions. 20 refs., 6 figs., 1 tab.

• Research Organization: EG and G Idaho, Inc., Idaho Falls, ID (USA)
• Sponsoring Organization: DOE/NE
• DOE Contract Number: AC07-76ID01570
• OSTI ID: 5424035
• Report Number(s): EGG-M-88357; CONF-890238--5; ON: DE90002086
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
ALGINIC ACID
AQUEOUS SOLUTIONS
AUGER ELECTRON SPECTROSCOPY
BIODEGRADATION
CARBOHYDRATES
CHEMICAL REACTIONS
COLLOIDS
COPPER
CORROSION
CORROSIVE EFFECTS
DECOMPOSITION
DISPERSIONS
ELECTRON SPECTROSCOPY
ELEMENTS
FILMS
GERMANIUM
HYDROGEN COMPOUNDS
METALS
MICROORGANISMS
MIXTURES
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PHOTOELECTRON SPECTROSCOPY
POLYMERS
POLYSACCHARIDES
SACCHARIDES
SEAWATER
SOLUTIONS
SPECTROSCOPY
THIN FILMS
TRANSITION ELEMENTS
WATER