Abstract Ni2Al3 and Ni2Al3/Ni-Re coatings deposited on Fe-Cr-Ni alloy were oxidized in dry and wet CO2 gas at 650 °C. Ni2Al3/Ni-Re coating shows higher oxidation resistance to both dry and wet CO2 gas than Ni2Al3 coating. It is attributed to the retarding effect of Ni-Re interlayer on interdiffusion between Ni2Al3 out-layer and substrate, which inhibits the subsequent inner oxidation during corrosion. θ-Al2O3 is found in α-Al2O3 scales of both coatings during wet CO2 corrosion. Water vapor accelerates the oxidation rate of both coatings in CO2 gas by promoting the formation of the fast growing θ-Al2O3 on the surface.

中文翻译：

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含和不含 Ni-Re 夹层的 Ni2Al3 涂层在干湿 CO2 气体中的耐腐蚀性比较

摘要 沉积在Fe-Cr-Ni合金上的Ni2Al3和Ni2Al3/Ni-Re涂层在650℃的干湿CO2气体中被氧化。Ni2Al3/Ni-Re 涂层对干和湿 CO2 气体的抗氧化性均高于 Ni2Al3 涂层。这归因于 Ni-Re 夹层对 Ni2Al3 外层和基体之间相互扩散的阻滞作用，从而抑制了腐蚀过程中随后的内部氧化。θ-Al2O3 存在于湿 CO2 腐蚀期间两种涂层的 α-Al2O3 鳞片中。水蒸气通过促进表面上快速生长的 θ-Al2O3 的形成，加速了两种涂层在 CO2 气体中的氧化速率。