Corrosion characteristics of reduced activation ferritic steel, JLF-1 (8.92Cr-2W) in molten salts Flibe and Flinak
Corrosion characteristics of reduced activation ferritic steel, JLF-1 (8.92Cr-2W) in molten salts Flibe and Flinak
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DOI：
10.1016/j.fusengdes.2009.02.046
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发表时间：
2009-06-01
影响因子：
1.7
通讯作者：
Fujii, Naoki
中科院分区：
文献类型：
--
作者：
Kondo, Masatoshi;Nagasaka, Takuya;Fujii, Naoki
在熔盐LiF-BeF2(Flibe)和LiF-NaF-KF(Flinak)中进行了500℃和600℃下1000h的静态腐蚀试验，目的是研究低活化铁素体钢JLF-1(8.92Cr-2W)在熔盐中的腐蚀特征。用悬浮液pH滴定法测定暴露前后液体中氟化氢(HF)的浓度。氟化氢的浓度决定了氟化电位。腐蚀主要是由于氟化和/或电化学腐蚀使Fe和Cr溶解到流体中而造成的。由于腐蚀，表面的碳可能会溶解到流体中，导致表面碳化物的减少。通过重量损失获得的JLF-1试件在600℃的Flibe和600℃的Flinak的腐蚀深度分别为0.637微米和6.73微米(C)2009Elsevier B.V.
Static corrosion tests were performed in molten salts, LiF-BeF2 (Flibe) and LiF-NaF-KF (Flinak), at 500 degrees C and 600 degrees C for 1000 h. The purpose is to investigate the corrosion characteristics of reduced activation ferritic steels, JLF-1 (8.92Cr-2W) in the fluids. The concentration of hydrogen fluoride (HF) in the fluids was measured by slurry pH titration method before and after the exposure. The HF concentration determined the fluoridation potential. The corrosion was mainly caused by dissolution of Fe and Cr into the fluids due to fluoridation and/or electrochemical corrosion. Carbon on the surface might be dissolved into the fluids due to the corrosion, and this resulted to the decrease of carbide on the surface. The corrosion depth of the JLF-1 specimen, which was obtained from the weight losses, was 0.637 mu m in Flibe at 600 degrees C and 6.73 mu m in Flinak at 600 degrees C. (C) 2009 Elsevier B.V. All rights reserved.