Effects of reduced sulfur on the corrosion behavior of Alloy 600 in high-temperature water

被引：11
|
作者：
Lee, E. H. [1 ]
Kim, K. M. [1 ]
Kim, U. C. [1 ]
机构：
[1] Korea Atom Energy Res Inst, Dept Nucl Mat Technol Dev, Taejon 305600, South Korea
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2007年 / 449卷
关键词：
stress corrosion cracking; steam generator; Alloy; 600; sulfate; reduced sulfur;
D O I：
10.1016/j.msea.2006.02.424
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The effects of reduced sulfur on the corrosion behavior of Alloy 600 MA were investigated in deaerated 0.01 M of sodiumsulfate (Na2SO4), sodium tetrathionate (Na2S4O6), and sodium thiosulfate (NaS2O3) solutions using potentiodynamic polarization and stress corrosion cracking (SCC) tests at 300 degrees C and 340 degrees C. The polarization curves of Alloy 600 MA showed a stable passivity in the Na2SO4 solution; however, the solutions of Na2S4O6 and Na2S2O3 showed accelerated anodic dissolution. The SCC susceptibility of Alloy 600 MA increased in the following order: in the Na2S2O3, Na2SO4, and Na2S4O6 solutions. Results of deposits and spectra taken from an energy dispersive X-ray system confirmed the existence of reduced sulfur. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：330 / 333
页数：4
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