Oxidation of Nickel-Coated AISI 430 Alloy: Effect of Pre-oxidation and Fe0.5Ni0.5 Inter-diffusion Layer
| Autor: | Mark K. King, Manoj K. Mahapatra |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Materials science Scanning electron microscope 020209 energy Diffusion Alloy Metals and Alloys Oxide chemistry.chemical_element 02 engineering and technology engineering.material Microstructure 01 natural sciences Inorganic Chemistry Diffusion layer Chromium Nickel chemistry.chemical_compound chemistry Chemical engineering 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Materials Chemistry engineering |
| Zdroj: | Oxidation of Metals. 94:359-381 |
| ISSN: | 1573-4889 0030-770X |
| DOI: | 10.1007/s11085-020-09996-1 |
| Popis: | The oxidation behavior of nickel (Ni)-coated AISI 430 alloy was investigated at 800 °C in moisture-saturated (~ 3% H2O) air. Effects of pre-oxidation of AISI 430 in air and inter-diffusion layer (Fe0.5Ni0.5) of Ni-coated AISI 430, in dilute hydrogen (Ar–3%H2) at 800 °C, on the oxidation behavior were also studied. Microstructure, elemental chemistry, and compound/oxide formation across the reaction zones/oxide layer were analyzed by scanning electron microscopy, energy-dispersive spectroscopy, and X-ray diffraction techniques. Multilayered oxides/reaction zones were found for all the samples. Ni-coated AISI 430 exhibits the lowest chromium diffusion into the oxide scale from the AISI 430/oxide scale interface. Pre-oxidation of AISI 430 and inter-diffusion of Ni-coated AISI 430 show excessive chromium diffusion into the reaction zone/oxide scale and interfacial porosity. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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