Oxidation of Fe-10Cr in O2 and in O2+H2O environment at 600 °C: A microstructural investigation

被引：55

作者：

Jonsson, T. ^{[1
]}

Pujilaksono, B. ^{[1
]}

Heidari, H. ^{[2
]}

Liu, F. ^{[2
]}

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

Halvarsson, M. ^{[2
]}

Johansson, L-G. ^{[1
]}

机构：

[1] Chalmers, Dept Chem & Biol Engn, SE-41296 Gothenburg, Sweden

[2] Chalmers, Dept Appl Phys, SE-41296 Gothenburg, Sweden

来源：

CORROSION SCIENCE | 2013年 / 75卷

关键词：

Stainless steel; TEM; STEM; High temperature corrosion; Internal oxidation; HIGH-TEMPERATURE OXIDATION; IRON-CHROMIUM ALLOYS; WATER-VAPOR; FECR-ALLOYS; FLOW-RATE; 600-DEGREES-C; SCALE; EVAPORATION; KINETICS; OXYGEN;

D O I：

10.1016/j.corsci.2013.06.016

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Oxidation of Fe-10Cr in dry and wet O-2 was studied at 600 degrees C for up to 168 h. Oxide microstructure was investigated by STEM/EDX, FIB/SEM and TEM. Oxidation in dry O-2 gives a Cr-rich protective (Fe1-xCrx)(2)O-3 scale. The same protective oxide initially forms in O-2 + H2O environment, but after an incubation period scale breakdown is triggered by CrO2(OH)(2) evaporation that depletes the substrate in Cr and converts (Fe1-xCrx)(2)O-3 to FeCr spinel oxide. Internal oxidation occurs after breakaway. Alternating external and internal oxidation result in the inward-growing scale showing a characteristic banded morphology. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：326 / 336

页数：11