Analysis of passive films on stainless steel by cyclic voltammetry and Auger spectroscopy

Journal Article · Mon Apr 01 04:00:00 EST 1985 · J. Electrochem. Soc.; (United States)

DOI:https://doi.org/10.1149/1.2113959· OSTI ID:6242700

Ramasubramanian, N; Preocanin, N; Davidson, R D

Anodic passivation of Type 316L stainless steel in a borate-boric acid buffer solution was studied using cyclic voltammetry and Auger spectroscopy. Based on a comparison with the results obtained on the metals (iron, chromium, and nickel), the reduction peaks appearing in the voltammograms for the steel were attributed to the reductive dissolution of a ferric oxide and to valence transitions associated with chromium and nickel in the oxide. It is shown that cyclic voltammetry in the buffer solution provides a qualitative and semiquantitative analysis of the passive film growth. Okamoto's model of formation of two types of films, determined by the anodization potential, is found to be applicable; the mechanism of oxide growth is related to selective enrichment of iron or chromium, which is based on solubility relationships predicted by thermodynamic considerations. 12 references, 8 figures.

• Research Organization: Atomic Energy of Canada Ltd., Chalk River, Ontario
• OSTI ID: 6242700
• Journal Information: J. Electrochem. Soc.; (United States), Journal Name: J. Electrochem. Soc.; (United States) Vol. 132:4; ISSN JESOA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
AUGER ELECTRON SPECTROSCOPY
CHROMIUM ALLOYS
CORROSION PROTECTION
CORROSION RESISTANT ALLOYS
DATA
ELECTRON SPECTROSCOPY
EXPERIMENTAL DATA
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
NUMERICAL DATA
PASSIVATION
SPECTROSCOPY
STAINLESS STEELS
STEELS
VOLTAMETRY