The long-term corrosion behavior of FeCrAl(Si) alloys after breakaway oxidation at 600?C

被引：12
|
作者：
Eklund, J. [1 ]
Persdotter, A. [1 ]
Ssenteza, V. [1 ]
Jonsson, T. [1 ]
机构：
[1] Chalmers Univ Technol, Dept Chem & Chem Engn, Energy & Mat, S-41296 Gothenburg, Sweden
来源：
CORROSION SCIENCE | 2023年 / 217卷
关键词：
FeCrAl; Silicon; SEM; EBSD; High temperature corrosion; Internal oxidation; HIGH-TEMPERATURE CORROSION; KCL-INDUCED CORROSION; AUSTENITIC STAINLESS-STEEL; CR-NI ALLOYS; WATER-VAPOR; FE-CR; INITIAL-STAGES; SANICRO; 28; SILICON; DRY;
D O I：
10.1016/j.corsci.2023.111155
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The long-term corrosion behavior of three FeCrAl(Si) alloys has been investigated in two environments (K2CO3 and KCl+H2O) at 600 degrees C. The FeCrAl alloy experienced breakaway oxidation in both environments but displayed a higher corrosion rate in KCl+H2O. The FeCrAlSi alloys retained the primary protection in the presence of K2CO3 but underwent breakaway oxidation in the presence of KCl+H2O. The FeCrAlSi alloys displayed considerably reduced corrosion rates, suggested to be an effect of the prevention of internal oxidation and the formation of non-continuous corundum-type oxide dispersed within the inward-growing scale.
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页数：12
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