Degradation of ferritic stainless steels under conditions used for solid oxide fuel cells and electrolyzers at varying oxygen pressures

被引：34

作者：

Alnegren, P. ^{[1
]}

Sattari, M. ^{[1
]}

Froitzheim, J. ^{[1
]}

Svensson, J-E. ^{[1
]}

机构：

[1] Chalmers Univ Technol, Environm Inorgan Chem, Kemivagen 10, SE-41296 Gothenburg, Sweden

来源：

CORROSION SCIENCE | 2016年 / 110卷

基金：

瑞典研究理事会;

关键词：

stainless steel; SEM; XRD; high temperature corrosion; HIGH-TEMPERATURE OXIDATION; WATER-VAPOR; ELECTRICAL-CONDUCTIVITY; CHROMIUM VAPORIZATION; DEFECT STRUCTURE; METALLIC INTERCONNECTS; SELECTIVE OXIDATION; GROWTH; HYDROGEN; ALLOY;

D O I：

10.1016/j.corsci.2016.04.030

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Four commercial ferritic stainless steels were tested at 850 degrees C in oxygen pressures ranging from 10(-4) to 1 atm, in order to investigate the isolated effect of oxygen pressure on corrosion, in the context of solid oxide electrolysis cells. The oxidation rates of all steels were essentially independent of oxygen partial pressure, which indicates n-type behavior. FIB/SEM analysis revealed that the grain size of the oxides was found to decrease at lower oxygen pressures. Volatile Cr species evaporation in pure oxygen was significantly lower than what has been reported for simulated solid oxide fuel cell environments with humid air. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：200 / 212

页数：13

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