Early stages of liquid-metal corrosion on pre-oxidized surfaces of austenitic stainless steel 316L exposed to static Pb-Bi eutectic at 400 °C

被引：9
|
作者：
Maia, Eloa Lopes [1 ,2 ]
Gavrilov, Serguei [2 ]
Tsisar, Valentyn [2 ]
Baert, Kitty [1 ]
De Graeve, Iris [1 ]
机构：
[1] Vrije Univ Brussel VUB, Dept Mat & Chem MACH, Lab Electrochem & Surface Engn SURF, Res Grp Sustainable Mat Engn SUME, Pleinlaan 2, B-1050 Brussels, Belgium
[2] Nucl Energy Technol NET, Belgium Nucl Res Ctr SCK CEN, Boeretang 200, B-2400 Mol, Belgium
来源：
CORROSION SCIENCE | 2024年 / 227卷
关键词：
Austenitic stainless steels; Lead-bismuth eutectic (LBE); XPS; Raman spectroscopy; Thermal oxidation in air; Liquid metal corrosion (LMC); DISSOLUTION CORROSION; XPS SPECTRA; LEAD; OXIDATION; BEHAVIOR; LBE; RESISTANCE; CONTACT; SILICON;
D O I：
10.1016/j.corsci.2023.111680
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of pre-oxidation in air at 300-500 degrees C on the initiation and development of liquid metal corrosion attack on 316L austenitic steel in static lead-bismuth eutectic (LBE) with similar to 10(-10) - 10(-9) mass% dissolved oxygen at 400 degrees C for 1200 h is investigated. General dissolution with preferential attack along twin boundaries was observed on polished surfaces with native oxide films. Fe/Cr-based oxide films pre-formed in air at 300 and 400 degrees C protect surfaces against dissolution. Localized corrosion was observed on surfaces pre-oxidized at 500 degrees C. Thermal oxide degradation rate depends on its composition rather than thickness.
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页数：13
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