Understanding a novel form of intergranular corrosion of stainless steel 316L exposed to molten LiCl-Li2O-Li

被引：1
作者：
Moon, Jeremy T. [1 ]
Phillips, William [3 ]
Chuirazzi, William [3 ]
Kane, Joshua [3 ]
Chidambaram, Dev [1 ,2 ,4 ]
机构：
[1] Univ Nevada, Dept Chem & Mat Engn, 1664 N Virginia St, Reno, NV 89557 USA
[2] Univ Nevada, Nevada Inst Sustainabil, 1664 N Virginia St, Reno, NV 89557 USA
[3] Idaho Natl Lab, 1955 N Freemont Ave, Idaho Falls, ID 83415 USA
[4] 1664 N Virginia St MS0388, Reno, NV 89557 USA
来源：
CORROSION SCIENCE | 2024年 / 228卷
基金：
美国能源部;
关键词：
Molten salts (A); Stainless steel (A); SEM (B); De-alloying (C); High temperature corrosion (C); Intergranular corrosion (C); ELECTROCHEMICAL REDUCTION; METALLIC LITHIUM; ELECTRODEPOSITION; PRECIPITATION; SALTS; LI;
D O I：
10.1016/j.corsci.2024.111836
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Stainless steel 316 L exposed to LiCl-Li2O molten salt containing Li metal for 500 and 1000 h experiences deep intergranular attack and bulk void formation. This degradation is due to a synergistic corrosion mechanism, different than other forms of molten salt corrosion, where Cr and Mn oxides and carbides form along grain boundaries and are dissolved by Li metal. Synchrotron transmission X-ray microscopy 3D imaging is used to show corrosion morphology and Cr enrichment and depletion in a novel format that has not previously been used for bulk corrosion samples.
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页数：10
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