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研究了Ｎａ_２ＳＯ_４沉积盐引起的Ｎｉ_３Ａｌ－Ｆｅ于７００一８２０℃空气中的腐蚀行为。结果表明，Ｎｉ_３Ａｌ－Ｆｅ遭受自持性的热腐蚀。热腐蚀的发生似可归因于Ｆｅ与Ｎａ_２ＳＯ_４反应的产物Ｎａ_２Ｏ与Ｎａ_２ＳＯ_４形成了Ｎａ_２Ｏ－Ｎａ_２ＳＯ_４共晶熔融盐，随后合金中Ｍｏ的氧化产物ＭｏＯ_３参与电化学阴极还原反应，从而引发合金快速的热腐蚀。此外，熔盐中Ｎａ_２ＳＯ_４与ＭｏＯ_３反应生成的ＳＯ_３导致了熔盐的高酸度和合金的内硫化，从而进一步加剧了腐蚀的进程。
The corrosion behavior of Ni_3Al-Fe induced by Na_2SO_4 deposition in air of 700 ℃ to 820 ℃ was studied. The results show that Ni 3 Al-Fe suffers from self-sustaining hot corrosion. The occurrence of hot corrosion can be attributed to the formation of Na_2O-Na_2SO_4 eutectic molten salt between Na and Na_2SO_4 reacted with Na_2SO_4, followed by MoO_3, which is the oxidation product of Mo, in the electrochemical cathode reduction reaction, which leads to rapid hot corrosion of the alloy . In addition, SO_3 produced by the reaction of Na_2SO_4 and MoO_3 in molten salt leads to high acidity of the molten salt and internal sulfurization of the alloy, thereby further aggravating the corrosion process.