The iron content in NiCrFe alloys strongly affected the properties of oxide films after 1012 h of immersion in an oxygenated simulated PWR primary water environment at 310 °C. Increasing the iron content in the alloy increased the porosity and thickness of the outer layer and the inner layer. Increasing the iron content in the alloy increased the amount of spinel needle-like oxides and decreased the amount of NiO particles in the outer layer. Cellular oxide in the inner layer was nickel-rich in the center and chromium-rich at the edge.

中文翻译：

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Ni Cr Fe合金中铁含量对在模拟PWR水氧化环境中形成的氧化膜的影响

Ni Cr Fe合金中的铁含量在310°C的氧化模拟PWR初级水环境中浸泡1012 h后，会严重影响氧化膜的性能。合金中铁含量的增加增加了外层和内层的孔隙率和厚度。增加合金中的铁含量会增加尖晶石状针状氧化物的数量，并减少外层中NiO颗粒的数量。内层的蜂窝状氧化物中心富镍，边缘富铬。