Abstract The effect of reactive air aluminizing (RAA) on the high temperature oxidation behavior of the H230 superalloy is studied at 850 °C for 600 hours. Mass gain values are measured and microstructure is studied by XRD, SEM, and EDX. Post oxidation mass gain for the aluminized H230 is reduced compared to wrought H230. The RAA process lead to formation of a three-zone diffusion coating with dominant β-NiAl in the two outer zones and increased γ'-Ni3Al after high temperature oxidation, which is attributed to the alumina scale growth during the high temperature oxidation.

中文翻译：

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镀铝 Haynes 230 的高温氧化行为

摘要 研究了活性空气渗铝 (RAA) 对 H230 高温合金在 850 °C 下 600 小时高温氧化行为的影响。测量质量增益值并通过 XRD、SEM 和 EDX 研究微观结构。与锻造 H230 相比，镀铝 H230 的氧化后增重减少。RAA 工艺导致在两个外部区域形成三区扩散涂层，其中两个外区主要是 β-NiAl，高温氧化后 γ'-Ni3Al 增加，这归因于高温氧化过程中氧化铝氧化皮的生长。