Abstract The oxidation behavior of nickel (Ni)-coated AISI 430 alloy was investigated at 800 °C in moisture-saturated (~ 3% H 2 O) air. Effects of pre-oxidation of AISI 430 in air and inter-diffusion layer (Fe 0.5 Ni 0.5 ) of Ni-coated AISI 430, in dilute hydrogen (Ar–3%H 2 ) 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. Graphic Abstract

中文翻译：

---

镀镍 AISI 430 合金的氧化：预氧化和 Fe0.5Ni0.5 互扩散层的影响

摘要 研究了镍 (Ni) 涂层 AISI 430 合金在 800 °C 下在水分饱和 (~ 3% H 2 O) 空气中的氧化行为。AISI 430 在空气中的预氧化和 Ni 涂层 AISI 430 的互扩散层 (Fe 0.5 Ni 0.5 ) 在 800 °C 的稀氢 (Ar–3%H 2 ) 中对氧化行为的影响学习了。通过扫描电子显微镜、能量色散光谱和 X 射线衍射技术分析了反应区/氧化物层上的微观结构、元素化学和化合物/氧化物的形成。所有样品都发现了多层氧化物/反应区。镀镍的 AISI 430 表现出最低的铬从 AISI 430/氧化皮界面扩散到氧化皮中。AISI 430 的预氧化和镀镍 AISI 430 的相互扩散表明铬过度扩散到反应区/氧化皮和界面孔隙中。图形摘要