Effects of O2- additive on corrosion behavior of Fe-Cr-Ni alloy in molten fluoride salts
Effects of O2- additive on corrosion behavior of Fe-Cr-Ni alloy in molten fluoride salts
复制标题
O2添加剂对FeCrNi合金在熔融氟化盐中腐蚀行为的影响
DOI：
10.1016/j.corsci.2019.01.040
复制
发表时间：
2019
影响因子：
8.3
通讯作者：
Xie Leidong
中科院分区：
文献类型：
--
作者：
Ai Hua;Shen Miao;Sun Hua;Dolan Kieran Patrick;Wang Chenyang;Ge Min;Yin Huiqin;Li Xiaoyun;Peng Hao;Li Na;Xie Leidong
采用失重法、电化学方法和扫描电子显微镜（SEM）、X射线衍射（XRD）、电子探针显微分析仪（EPMA）和拉曼光谱等表征技术，研究了316不锈钢（316 SS）在650 °C熔融FLINAK和FLINAK + O2−盐中的腐蚀行为。结果表明，316不锈钢在熔融FLINAK中遭受腐蚀。在316不锈钢的表面上检测到了明显的腐蚀产物Cr2 O3和Fe 3 O 4。当加入O2-时，腐蚀产物变为LiCrO 2，从而保护合金成分不扩散到盐中。
Corrosion behavior of 316 stainless steel (316SS) was studied in molten FLINAK and FLINAK + O2−salts at 650 °C by weight loss measurement, electrochemical methods and characterization techniques including scanning electron microscopy (SEM), X-Ray diffraction (XRD), electron probe micro-analyzer (EPMA) and Raman spectroscopy. The results showed that 316SS suffered corrosion attack in molten FLINAK. Notable corrosion products Cr2O3and Fe3O4were detected on the surface of 316SS in addition to subsurface voids. When O2-was added, the corrosion product changed to LiCrO2, which protected the alloy constituents from diffusion into the salt.