Analysis of Oxides Formed on the Surface of the Alloy 690 in Hydrogenated Supercritical Water
Analysis of Oxides Formed on the Surface of the Alloy 690 in Hydrogenated Supercritical Water作者机构:School of Materials Science and EngineeringUniversity of Science and Technology Beijing Department of Materials Science and EngineeringUniversity of Wisconsin-Madison
出 版 物:《Acta Metallurgica Sinica(English Letters)》 (金属学报(英文版))
年 卷 期:2016年第29卷第8期
页 面:774-781页
核心收录:
学科分类:0817[工学-化学工程与技术] 0806[工学-冶金工程] 08[工学] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程(可授工学、理学学位)] 080502[工学-材料学] 0802[工学-机械工程] 0703[理学-化学] 0811[工学-控制科学与工程]
基 金:supported by the University of Wisconsin-Madison
主 题:Alloy 690 Supercritical water Oxides Corrosion
摘 要:The oxides formed on the surface of the alloy 690 in hydrogenated supercritical water at 400℃ for 1000 h were investigated using scanning electron microscopy,transmission electron microscopy,scanning transmission electron microscopy and energy-dispersive X-ray *** oxides on me surface of the alloy 690 exhibited multi-layer structure:an outer layer consisted of granular crystallites(NiO and NiFe_2O_4) and a compact inner layer(spinel and Cr_2O_3).Chemical analysis indicated that the outer layer was enriched in nickel but depleted in chromium,whereas the inner layer was enriched in chromium and iron but depleted in *** inner layer was also characterized as layered structure by Fe-rich spinel on top of continuous Cr_2O_3 ***,Cr_2O_3 nodules were readily observed at the oxides/alloy interface.