Atomic force microscopy observations of pitting corrosion and inhibition on 7075-T651 aluminum alloy in hydrochloric acid solutions

Journal Article · Wed Mar 01 00:00:00 EST 1995 · Materials Characterization

DOI:https://doi.org/10.1016/1044-5803(94)00055-P· OSTI ID:51680

Josefowicz, J Y; Farrington, G C ^[1]; DeLuccia, J J; Agarwala, V S ^[2]

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1. Univ. of Pennsylvania, Philadelphia, PA (United States). Materials Science and Engineering Dept.
2. Naval Air Warfare Center, Warminster, PA (United States)

Atomic force microscopy, a unique surface imaging technique that enables the effects of an imposed environment on the substrate to be measured and assessed, was used to define the effects of a dilute aqueous hydrochloric acid solution (0.03 N) on a polished and etched surface of a peak aged aluminum-zinc-magnesium alloy (7075-T651). A multifunctional corrosion inhibitor with dichromate, nitrite, borate, and molybdate ions, especially solubilized in an organic medium, was introduced to the study and its corrosion retardation effects were observed in situ by the atomic force microscope.

• OSTI ID: 51680
• Journal Information: Materials Characterization, Vol. 34, Issue 2; Other Information: PBD: Mar 1995
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM BASE ALLOYS
PITTING CORROSION
ZINC ALLOYS
MAGNESIUM ALLOYS
HYDROCHLORIC ACID
MICROSCOPY
CORROSION PROTECTION
DICHROMATES
NITRITES
BORATES
MOLYBDATES
ETCHING