The effect of graphite powders (0.02 wt.% and 0.1 wt.%) and the interaction between graphite bulk and Hastelloy N in molten 46.5%LiF-11.5%NaF-42%KF (mol%) (FLiNaK) at 700 °C in Ar atmosphere on the corrosion behavior of Hastelloy N is studied. The corrosion of Hastelloy N is accelerated in both cases, which mainly manifested as the selective dissolution of Cr and Mo. The dissolved Cr and Mo ions can diffuse toward the graphite to be reduced partly to metals, especially through disproportionation reactions.

中文翻译：

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石墨对Hastelloy N在熔融氟化物中腐蚀的影响

石墨粉（0.02 wt.% 和 0.1 wt.%）的影响以及石墨块体与哈氏合金 N 在 700 °C 熔融 46.5%LiF-11.5%NaF-42%KF (mol%) (FLiNaK) 中的相互作用研究了Ar气氛对Hastelloy N腐蚀行为的影响。在这两种情况下，Hastelloy N 的腐蚀都会加速，主要表现为 Cr 和 Mo 的选择性溶解。溶解的 Cr 和 Mo 离子可以向石墨扩散，部分还原为金属，特别是通过歧化反应。