液态锡对低活化马氏体/铁素体钢CLF-1的腐蚀行为研究

doi:10.16568/j.0254-6086.202002006

核聚变与等离子体物理 ›› 2020, Vol. 40 ›› Issue (2): 129-134.DOI: 10.16568/j.0254-6086.202002006

液态锡对低活化马氏体/铁素体钢CLF-1的腐蚀行为研究

贺平逆1, 2，韦建军3，王志君4，张坤1，芶富均*1

(1. 四川大学原子核科学技术研究所，成都 610065； 2. 贵州大学物理学院，贵阳 550025； 3. 四川大学原子分子物理研究所，成都 610065； 4. 成都大学高等研究院，成都 610106)

收稿日期:2019-01-04 修回日期:2019-08-30 出版日期:2020-06-15 发布日期:2020-06-15
作者简介:贺平逆(1973-)，男，贵州贵阳人，博士研究生，从事液态金属与材料相容性研究。
基金资助:
国家磁约束核聚变能发展研究专项(2013GB114003)；国家自然科学基金(11275135，11102221)

Corrosion of low activation ferritic/martensitic steel CLF-1 in liquid tin

HE Ping-ni1, 2, WEI Jian-jun3, WANG Zhi-jun4, ZHANG Kun1, GOU Fu-jun1

(1. Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610065; 2. School of Physics, Guizhou University, Guiyang 550025; 3. Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065; 4. Institute for Advanced Study, Chengdu University, Chengdu 610106)

Received:2019-01-04 Revised:2019-08-30 Online:2020-06-15 Published:2020-06-15

摘要/Abstract

摘要：

采用背散射电子扫描显微镜、电子衍射能谱和X射线衍射等分析方法，研究了浸泡在300~700℃的液态锡(Sn)中24h后的低活化马氏体/铁素体钢CLF-1的腐蚀行为。研究结果表明，在所有测试温度下液态锡对CLF-1钢表面均有不同程度的腐蚀，主要腐蚀机制为化合溶解腐蚀。铬(Cr)以单质形式溶解沉淀，液态锡与铁在CLF-1钢表面反应生成由铁锡化合物构成的腐蚀层。当温度低于500℃时，腐蚀层厚度近似为一常量，约8μm，化学成分为FeSn₂。当温度高于500℃时，腐蚀层厚度随温度线性增加，腐蚀层呈双层结构，分别为CLF-1边界处的FeSn层和覆盖在其表面的FeSn₂层。

关键词: 聚变堆, 低活化, 液态锡, CLF-1钢, 液态锡腐蚀

Abstract:

Corrosion behavior of the reduced activation ferritic/martensitic steel CLF-1 was investigated in liquid tin at temperatures of 300 up to 700℃ for 24 hours with backscattered scanning electron microscopy, energy dispersive X-ray spectroscopy and X-ray diffraction. Attack of liquid tin to the surface of CLF-1 was observed at all temperatures, the main corrosion mechanism was compound dissolution corrosion. Cr was considered to be dissolved and precipitated, and a corrosion layer of Fe stannate was formed at the surface of CLF-1 by reaction between Sn and Fe. Up to 500℃ the chemical composition of the corrosion layer was FeSn₂, and the thickness of the corrosion layer is a constant of about 8μm. Above 500℃ the chemical composition of the corrosion layer changed to FeSn at the border to CLF-1, forming a two-layer structure of the FeSn layer and the outer FeSn₂ layer. The thickness of the corrosion layer increased linearly with the increased temperature.

Key words: Fusion reactor, Low activation, Liquid tin, CLF-1 steel, Corrosion in liquid tin

中图分类号:

TL62+7

贺平逆1, 2，韦建军3，王志君4，张坤1，芶富均*1 . 液态锡对低活化马氏体/铁素体钢CLF-1的腐蚀行为研究[J]. 核聚变与等离子体物理, 2020, 40(2): 129-134.

HE Ping-ni1, 2, WEI Jian-jun3, WANG Zhi-jun4, ZHANG Kun1, GOU Fu-jun1. Corrosion of low activation ferritic/martensitic steel CLF-1 in liquid tin[J]. NUCLEAR FUSION AND PLASMA PHYSICS, 2020, 40(2): 129-134.

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液态锡对低活化马氏体/铁素体钢CLF-1的腐蚀行为研究

Corrosion of low activation ferritic/martensitic steel CLF-1 in liquid tin

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