Severe dual atmosphere effect at 600 °C for stainless steel 441

被引：54

作者：

Alnegren, Patrik ^{[1
]}

Sattari, Mohammad ^{[1
]}

Svensson, Jan-Erik ^{[1
]}

Froitzheim, Jan ^{[1
]}

机构：

[1] Chalmers Univ Technol, Energy & Mat, S-41296 Gothenburg, Sweden

来源：

JOURNAL OF POWER SOURCES | 2016年 / 301卷

基金：

瑞典研究理事会;

关键词：

High temperature oxidation; SOFC; Interconnect; Dual atmosphere; Ferritic steel; IT-SOFC; OXIDE FUEL-CELLS; INTERCONNECT EXPOSURE CONDITIONS; HIGH-TEMPERATURE OXIDATION; WATER-VAPOR; CHROMIUM VAPORIZATION; BREAKAWAY OXIDATION; FERRITIC STEELS; BEHAVIOR; EVAPORATION; ALLOYS;

D O I：

10.1016/j.jpowsour.2015.10.001

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

AISI 441 foils of 0.2 mm thickness were exposed in a dual atmosphere setup in which one side was exposed to air -3% H2O and the other to Ar -5% H-2 - 3% H2O. The experiment was performed at 600 degrees C and was referenced against exposures in air +3% H2O on both sides. The exposure conditions were chosen to simulate the conditions of an interconnect in intermediate temperature solid oxide fuel cell stacks (IT-SOFC). A strong dual atmosphere effect was observed: local breakaway corrosion was discovered after only 1000 h on samples exposed to dual atmospheres. After 3000 h iron oxide had propagated to cover the entire surface area of the sample. In comparison, the samples exposed in single atmosphere formed thin protective chromia scales on both sides even after 3000 h of exposure. (C) 2015 The Authors. Published by Elsevier B.V.

引用

页码：170 / 178

页数：9

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