XPS Investigation of Co-Ni Oxidized Compounds Surface Using Peak-On-Satellite Ratio. Application to Co₂₀Ni₈₀ Passive Layer Structure and Composition.

ABSTRACT: XPS data processing for cobalt and nickel core-level peaks can be complicated. This is especially true when analyzing a mixture of oxide/oxyhydroxide/hydroxide compounds of these metals. The objective of this study is to develop a method for decomposing XPS spectra of 2p core levels for nickel and cobalt-oxidized compounds. This methodology was then employed to study the passivation layer of the Co₂₀Ni₈₀ alloy. The analysis of Ni_2p and Co_2p photo peaks using a homemade code based on core-level peak structure and satellites enables us to determine the chemical composition of the surface layer, knowledge of which is particularly important because it is directly linked to the anticorrosive properties it confers on the surface of the oxidized alloy.

SUBMITTER: Laik B 

PROVIDER: S-EPMC11447992 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature