含Nb奥氏体不锈钢中NbC的液态Pb-Bi共晶腐蚀行为及其对氧化层形成的影响

吴炀, 谢昂, 陈胜虎, 姜海昌, 戎利建

Corrosion Behavior of NbC and Its Effect on Corrosion Layer Formation in Liquid Lead-Bismuth Eutectic of Nb-Containing Austenitic Stainless Steel

WU Yang, XIE Ang, CHEN Shenghu, JIANG Haichang, RONG Lijian

图5 固溶态样品经550 ℃饱和氧LBE腐蚀5000 h后内氧化层中NbC附近的TEM分析结果

Fig.5 TEM analyses of the inner oxide scale of solution-treated Nb-containing austenitic stainless steel after exposure to oxygen-saturated LBE at 550 oC for 5000 h (a, b) BSE images of the FIB foil from inner oxide scale containing NbC (c) EDS Nb mapping from the selected area in Fig.5b (Inset shows the SAED pattern of NbC) (d) high-angle annular dark field (HAADF) image (Inset show the SAED pattern of oxide near NbC)