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Investigation of impurity driven corrosion behavior in molten 2LiF-BeF2 salt
Corrosion Science ( IF 8.3 ) Pub Date : 2020-09-01 , DOI: 10.1016/j.corsci.2020.108823
William H. Doniger , Cody Falconer , Mohamed Elbakhshwan , Karl Britsch , Adrien Couet , Kumar Sridharan

Abstract A 1000 -h corrosion experiment of 316H stainless steel at 700 °C investigated the role of metal fluoride impurities CrF2 and FeF2 in LiF-BeF2 (66-34 mole %) (FLiBe) salt. Inductively coupled plasma-optical emission spectroscopy (ICP-OES) demonstrated the ability to measure changes in the concentration of these fluorides in FLiBe salt. Cyclic voltammetry (CV) showed the potential for real-time quantitative concentration measurement of corrosion products in the molten salt. Materials characterization revealed that both impurity species influence the dissolution of Cr from the alloy. The collective results from these analysis methods advance the understanding of the influence impurities have on materials corrosion.

中文翻译:

2LiF-BeF2 熔融盐中杂质驱动腐蚀行为的研究

摘要 316H 不锈钢在 700 °C 下的 1000 小时腐蚀实验研究了金属氟化物杂质 CrF2 和 FeF2 在 LiF-BeF2 (66-34 mol%) (FLiBe) 盐中的作用。电感耦合等离子体发射光谱 (ICP-OES) 证明了测量 FLiBe 盐中这些氟化物浓度变化的能力。循环伏安法 (CV) 显示了实时定量测量熔盐中腐蚀产物浓度的潜力。材料表征表明,两种杂质都会影响合金中 Cr 的溶解。这些分析方法的综合结果促进了对杂质对材料腐蚀影响的理解。
更新日期:2020-09-01
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