欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
研究了12Cr铁素体／马氏体钢在650℃／25MPa超临界水中的腐蚀行为。采用扫描电镜-X射线能量色散谱（SEM—EDS）、X射线衍射（XRD）分析了不同腐蚀时间氧化膜的显微形貌、组织结构与成分分布。结果表明，在650℃／25MPa的超临界水中腐蚀1000h后，12Cr铁素体／马氏体钢的均匀腐蚀增重速率达到了0．6328mg／（dm^2·h）。随着腐蚀时间的延长，表面多面体氧化物颗粒长大，并且在氧化膜表面出现了气孔和裂纹。氧化膜为双层结构，厚度约为50μm，外层氧化膜较疏松而富Fe贫Cr，内层氧化膜相对致密而富Cr。
英文摘要：
Corrosion behavior of 12Cr ferritic/martensitic steel exposed to supercritical water at 650℃/25MPa was investigated. The morphologies, microstructures and chemical compositions of oxide films grown on 12Cr ferritic/ martensitic steel were analyzed by scanning electron microscope/energy dispersive spectroscopy（SEM/EDS） and X-ray diffraction（XRD）. The results indicate that general corrosion rate of 12Cr ferritic/martensitic steel is 0. 6328mg/（dm^2 · h） after exposed to supercritical water at 650℃/25MPa for 1000h. The Polyhedron-shaped surface oxide crystals grow with the exposure time and pores and crevices appear in the surface oxides. A double-layered structure oxide film is identified and the thickness of oxide film is about 50μm, the loose outer layer is rich in Fe and deplete in Cr, while the relatively compact inner layer is rich in Cr.
同期刊论文项目
同项目期刊论文
期刊信息
位置：