Comparative study of the native oxide on 316L stainless steel by XPS and ToF-SIMS
| Autor: | Marie-Laure Abel, Robert H. Carr, John F. Watts, Sabrina Tardio, James Castle |
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| Rok vydání: | 2015 |
| Předmět: |
Materials science
Inorganic chemistry Oxide Surfaces and Interfaces Condensed Matter Physics Mass spectrometry Surfaces Coatings and Films Metal chemistry.chemical_compound chemistry X-ray photoelectron spectroscopy visual_art visual_art.visual_art_medium Hydroxide Layer (electronics) Water content Dissolution |
| Zdroj: | Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. 33:05E122 |
| ISSN: | 1520-8559 0734-2101 |
| Popis: | The very thin native oxide film on stainless steel, of the order of 2 nm, is known to be readily modified by immersion in aqueous media. In this paper, XPS and ToF-SIMS are employed to investigate the nature of the air-formed film and modification after water emmersion. The film is described in terms of oxide, hydroxide and water content. The preferential dissolution of iron is shown to occur on immersion. It is shown that a water absorbed layer and a hydroxide layer are present above the oxide-like passive film. The concentrations of water and hydroxide appear to be higher in the case of exposure to water. A secure method for the peak fitting of Fe2p and Cr2p XPS spectra of such films on their metallic substrates is described. The importance of XPS survey spectra is underlined and the feasibility of C60+ SIMS depth profiling of a thin oxide layer is shown. |
| Databáze: | OpenAIRE |
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