原子能科学技术2011，Vol.45Issue(7)：822-827,6.
C-276合金在650℃／25MPa超临界水中的腐蚀行为
Corrosion Behavior of C-276 Alloy in Supercritical Water at 650 ℃/25 MPa
摘要
Abstract
The corrosion behavior of nickel-base alloy Hastelloy C-276 was investigated in supercritical water (SCW) at 650 ℃/25 Mpa. SEM, EDS, GIXRD and XPS were used to analyze the corrosion morphology, structure and element distribution of oxide film. The results show that the corrosion process of C-276 alloy at 650 ℃/25 Mpa in SCW is mainly dissolution of Ni. Since it can not form a uniform and complete oxide film, the alloy in SCW is not well placed to corrosion resistance. The dual-layer oxide film structure which is formed on C-276 is rich in Cr but poor in Ni, Mo. The outer layer consisting of loose and large grains Ni(OH)2 and NiO agrees with dissolution and precipitation mechanism, while the growth of the Cr2O3 inner layer is the result of water through the porous oxides.关键词
Hastelloy C-276/镍基合金/超临界水/氧化膜Key words
Hastelloy C-276/ nickel-base alloy/ supercritical water/ oxide film分类
能源科技引用本文复制引用
李海丰,范洪远,张强,邱绍宇,王均..C-276合金在650℃／25MPa超临界水中的腐蚀行为[J].原子能科学技术,2011,45(7):822-827,6.基金项目
国家重点基础研究发展计划资助项目(2007CB209802) （2007CB209802）
