Electrochemical characterization of oxide film formed at high temperature on Alloy 690

被引：27
作者：
Abraham, Geogy J. [1 ]
Bhambroo, Rajan [2 ]
Kain, V. [1 ]
Shekhar, R. [3 ]
Dey, G. K. [1 ]
Raja, V. S. [2 ]
机构：
[1] BARC, Div Mat Sci, Bombay 400085, Maharashtra, India
[2] Indian Inst Technol, Deptt Met Engg & Mat Sci, Bombay 400076, Maharashtra, India
[3] BARC, CCCM, Hyderabad 500062, Andhra Pradesh, India
来源：
NUCLEAR ENGINEERING AND DESIGN | 2012年 / 243卷
关键词：
STAINLESS-STEEL; PRIMARY WATER; BASE ALLOYS; SURFACE; 316L; PH;
D O I：
10.1016/j.nucengdes.2011.11.018
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
High temperature passivation studies on Alloy 690 were carried out in lithiated water at 250 degrees C, 275 degrees C and 300 degrees C for 72 h. The passive films were characterized by glow discharge-quadrupole mass spectroscopy (GD-QMS) for compositional variation across the depth and micro laser Raman spectroscopy for oxide composition on the surface. The defect density in the oxide films was established from the Mott-Schottky analysis using electrochemical impedance spectroscopy. Electrochemical experiments at room temperature in chloride medium revealed best passivity behaviour by the oxide film formed at 300 degrees C for 72 h. The electrochemical studies were correlated to the chromium (and oxygen) content of the oxide films. Autoclaving at 300 degrees C resulted in the best passive film formation on Alloy 690 in lithiated water. (C) 2011 Elsevier B.V. All rights reserved.
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收藏
页码：69 / 75
页数：7
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