Influence of Al content and pre-oxidation on the aqueous corrosion resistance of binary Fe-Al alloys in sulphuric acid

被引：34
|
作者：
Peng, Jian [1 ]
Moszner, Frank [2 ]
Rechmann, Julian [1 ]
Vogel, Dirk [1 ]
Palm, Martin [1 ]
Rohwerder, Michael [1 ]
机构：
[1] Max Planck Inst Eisenforsch GmbH, Max Planck Str 1, D-40237 Dusseldorf, Germany
[2] Winterthur Gas & Diesel Ltd, Schutzenstr 1-3, CH-8401 Winterthur, Switzerland
来源：
CORROSION SCIENCE | 2019年 / 149卷
关键词：
Fe-Al alloys; Aqueous corrosion resistance; Pre-oxidation; Sulphuric acid; SURFACE ANALYTICAL INVESTIGATIONS; AISI-316; STAINLESS-STEELS; IRON-ALUMINUM ALLOYS; INTERMETALLIC COMPOUND; PASSIVE LAYERS; BETA-FEAL; PURE IRON; BEHAVIOR; H2SO4; ADDITIONS;
D O I：
10.1016/j.corsci.2018.12.040
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The influence of Al content and pre-oxidation on the corrosion behavior of binary Fe-Al alloys in 0.0126 M H2SO4 was investigated. The minimum Al content for forming a passive film on binary Fe-Al at 25 degrees C is 15 at.% and passivation improves up to 25 at.% Al. X-ray photoelectron spectroscopy measurements show that the passive film on Fe-25Al is enriched in Al and consists of an outer layer of mixed Al and Fe hydroxides and an inner layer of Al oxide. The oxide layer generated at 1000 degrees C effectively protected against aqueous corrosion in H2SO4.
引用
收藏
页码：123 / 132
页数：10
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