Corrosion of T91 and pure iron in flowing and static Pb-Bi alloy between 450 °C and 540 °C: experiments, modelling and mechanism

IF 10.3 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science Pub Date : 2020-11-01 Epub Date: 2020-07-27 DOI:10.1016/j.corsci.2020.108897

L. Martinelli , K. Ginestar , V. Botton , C. Delisle , F. Balbaud-Célérier

引用次数: 24

Abstract

T91 (Fe-9Cr steel) and pure iron were corroded in pure dissolution domain in liquid lead bismuth eutectic (LBE) from 450 to 540 °C in static and in dynamic LBE flow. The modelling showed that corrosion rates were controlled: (i) for static condition (LBE natural convection), by the iron diffusion in the diffusion boundary layer; (ii) for flowing LBE, by a mixed process combining both the interfacial reaction rate of iron dissolution and the iron diffusion rate in the diffusion boundary layer. By fitting the modelling on the experimental points, the constant of interfacial reaction rate was determined.

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T91和纯铁在450 °C和540 °C之间流动和静态Pb-Bi合金中的腐蚀:实验、建模和机理

T91 (Fe-9Cr钢)和纯铁在450 ~ 540 °C的液态铅铋共晶(LBE)中处于纯溶解区，在静态和动态LBE流动中被腐蚀。模拟结果表明:(1)在静态条件下(LBE自然对流)，腐蚀速率受扩散边界层中铁的扩散控制;(ii)对于流动LBE，采用铁溶解界面反应速率和铁在扩散边界层中的扩散速率相结合的混合过程。通过对实验点的拟合，确定了界面反应速率常数。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Corrosion Science 工程技术-材料科学：综合

CiteScore

13.60

自引率

18.10%

发文量

763

审稿时长

46 days

期刊介绍： Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies. This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.

Corrosion of T91 and pure iron in flowing and static Pb-Bi alloy between 450 °C and 540 °C: experiments, modelling and mechanism

Abstract

Corrosion of T91 and pure iron in flowing and static Pb-Bi alloy between 450 °C and 540 °C: experiments, modelling and mechanism