{
  "abstract": "Thin native oxide films spontaneously formed on a series of cobalt–nickel alloys with varying cobalt concentrations were investigated using X-ray photoemission spectroscopy (XPS). Combining XPS with sequential ion abrasion allowed identification of the various oxides and hydroxides present within the passive layers, depending on their depth in the films, which do not exceed 5 nm. A recent study of the Co20Ni80 alloy showed that the surface layer is heterogeneous both laterally and in depth, with some regions covered by oxidized cobalt compounds and others by oxidized nickel compounds. Different oxide thicknesses were observed on the Co20Ni80 alloy compared to pure Ni and Co metals. In the present study, we investigate the thicknesses and compositions of cobalt and nickel oxide films in binary alloys CoxNi100–x, with x = 0, 20, 50, 70, 90, and 100. Building on the previous study of Co20Ni80, where a surface galvanic effect induced by alloying was proposed, we show that variations in Co concentration suggest that the magnetic properties of the substrate influence the composition of the passivation layers formed on the cobalt–nickel alloys.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 8,
  "authors": [
    {
      "name": "Barbara Laïk"
    },
    {
      "name": "Morgane Richet"
    },
    {
      "name": "Nicolas Emery"
    },
    {
      "name": "Loïc Perrière"
    },
    {
      "name": "Yvan Cotrebil"
    },
    {
      "name": "Vincent Russier"
    },
    {
      "name": "Ivan Guillot"
    },
    {
      "name": "Pierre Dubot"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/becx690z20aje.bib",
  "cited_by": 1,
  "doi": "10.1021/acsomega.6c00562",
  "fulltext_url": null,
  "id": "becx690z20aje",
  "issns": [
    "2470-1343"
  ],
  "landing_url": "https://hal.science/hal-05759964v1",
  "language": "en",
  "licence": "CC-BY-NC-ND-4.0",
  "licence_label": "CC BY-NC-ND 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "hal",
      "0.chim"
    ],
    [
      "openalex",
      "2506|Hydrogen embrittlement and corrosion behaviors in metals"
    ]
  ],
  "openalex": "W7163890572",
  "pdf_url": "https://hal.science/hal-05759964/document",
  "pmcid": null,
  "pmid": null,
  "published": "2026-06-08",
  "publisher": "ACS Publications",
  "ris": "https://research.draconitic.com/paper/becx690z20aje.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:39Z",
      "native_id": "hal-05759964",
      "source": "hal",
      "url": "https://hal.science/hal-05759964v1"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2506|Hydrogen embrittlement and corrosion behaviors in metals",
      "subfield": "materials-polymers"
    }
  ],
  "title": "XPS Analysis of Co–Ni Alloy Passive Layers: Computational Peak-on-Satellite Analysis of 2p Core Levels Reveals the Influence of the Co/Ni Ratio on Oxide Chemistry and Structure",
  "title_text": "XPS Analysis of Co–Ni Alloy Passive Layers: Computational Peak-on-Satellite Analysis of 2p Core Levels Reveals the Influence of the Co/Ni Ratio on Oxide Chemistry and Structure",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:17:39Z",
  "url": "https://research.draconitic.com/paper/becx690z20aje",
  "venue": "ACS Omega",
  "versions": []
}