超级奥氏体不锈钢AL-6XN在超临界水中的腐蚀行为  

CORROSION BEHAVIOR OF SUPER-AUSTENITIC STAINLESS STEEL AL-6XN IN SUPERCRITICAL WATER

作　　者：尹开锯 邱绍宇[1] 唐睿[1] 洪晓峰[1] 张乐福[2] 张强[1] 

机构地区：[1]中国核动力研究设计院反应堆燃料及材料重点实验室,成都610041 [2]上海交通大学核科学与工程学院,上海200240

出　　处：《中国腐蚀与防护学报》2012年第5期375-380,共6页Journal of Chinese Society For Corrosion and Protection

基　　金：核能开发项目国家重点基础研究发展规划项目(2007CB209800)资助

摘　　要：研究了超级奥氏体不锈钢AL-6XN在500℃,550℃和600℃/25 MPa超临界水中的腐蚀行为,通过扫描电镜-电子能谱(SEM-EDX)、X射线衍射(XRD)和X射线光电子能谱(XPS)分析了氧化膜的显微形貌、组织结构与成分分布。结果表明,氧化膜为双层结构,氧化膜中含Fe_3O_4,Cr_2O_3,Fe_2O_3和FeCr_2O_4相。AL-6XN在超临界水中氧化膜存在脱落现象,脱落程度随温度升高而加剧。The corrosion behavior of super-austenitic stainless steel AL-6XN exposed to supercritical wa- ter （SCW） at 500℃, 550 ℃, 600 ℃/25 MPa respectively was investigated by means of mass loss method, scanning electron microscope/energy dispersive X-ray spectroscopy, X-ray diffraction and X-ray photoelectron spectroscopy. A dual-layered oxide scale formed on AL-6XN, which was mainly composed of Fe3O4, Cr2O3, Fe2O3 and FeCr2O4. The oxide scale had a tendency to spall, which increased with the increase of exposure temperature.

关 键 词：超级奥氏体不锈钢AL-6XN 超临界水 氧化 氧化膜脱落 

分 类 号：TG171[金属学及工艺—金属表面处理]