In-Situ Polarized Neutron Reflectometry Study of the Passive Film Growth on Fe-20Cr Alloy. Issue 11 (27th March 2019)

• Record Type: Journal Article
• Authors: Ha, Hung M.; Fritzsche, Helmut
• Is Part Of: Journal of the Electrochemical Society. Volume 166:Issue 11(2019)
• Page Start: C3064
• Page End: C3067
• Publication Date: 2019-03-27
• Subjects: Corrosion -- Passivity -- Fe-Cr alloys -- neutron reflectometry -- Passivity; Electrochemistry -- Periodicals; 541.3705
• DOI: 10.1149/2.0081911jes
• Languages: English
• ISSNs: 0013-4651

Abstract

Abstract : Metal dissolution and passivation of Fe-20Cr alloy in an alkaline solution were investigated using in-situ polarized neutron reflectometry. The dissolution of the alloy, the thickness of sub-layers in the passive film, the interfacial roughness between layers, and the scattering length density profile of the passive film were measured with sub-nanometer resolution. An anodization ratio for oxide growth of 3.4 ± 0.4 nm/V was determined. The oxide formation efficiency and the layer density at different applied potentials were also quantified.