Characteristics of Oxide Films on Zr702 and Their Corrosion Performance in Boiling Fluorinated Nitric Acid

Author:

Su Hangbiao12,Li Yaning3,Zhao Yongqing1,Zeng Weidong1,Xu Jianping4

Affiliation:

1. State Key Laboratory of Solidification Processing, School of Material Science and Engineering, Northwestern Polytechnical University, Xi’an 710072, China

2. Xi’an QinTi Intelligent Manufacturing Technologies Co., Ltd., Xi’an 710016, China

3. State Key Laboratory of Porous Metal Materials, Northwest Institute for Non-Ferrous Metal Research, Xi’an 710016, China

4. Xi’an Rare Metal Materials Institute Co., Ltd., Xi’an 710016, China

Abstract

Fluoride ions, which interfere with the oxide formation on zirconium have been over-looked until recently. The effect of fluoride ions on oxide formation and dissolution behaviors in zirconium was investigated in this study. A detailed quantitative characterization of the oxide films formed on Zr702 immersed in a fluorinated nitric acid solution was performed using X-ray photoelectron spectroscopy, high-resolution transmission electron microscopy, and representative high-angle annular dark-field scanning Transmission Electron Microscope, (TEM). The corrosion performance in a fluorinated nitric acid solution was discussed. The results reveal that the thickness of the oxide films immersed in the fluorinated nitric acid solution was between 42–48 nm, which is much thinner than that of the oxide layer (~98.85 nm thickness) in the F− free HNO3 solution. The oxide film was identified to be a nanocrystalline cluster, comprised of outermost HfO2 and HfF4 layers, sub-outer ZrO2 and ZrF4 layers, and an innermost Zr (F, O)3.6 layer. This fluoride species penetration through the oxide films indicated that the fluoride ions are responsible for the dissolution of the oxide film of Zr702.

Funder

National Key Research and Development Program

Publisher

MDPI AG

Reference31 articles.

1. Electrochemical Behavior Assessment of Zircaloy-4 in Nitric Acid Solutions by Electrochemical Impedance Spectroscopy and Mott-Schottky Analyses;Arash;Anal. Bioanal. Electrochem.,2017

2. Corrosion of zirconium alloys demonstrated by using impedance spectroscopy;Veronika;J. Nucl. Mater.,2018

3. Zirconium based neutron absorption material with outstanding corrosion resistance and mechanical properties;Xu;J. Nucl. Mater.,2022

4. High temperature Zircaloy-4 oxidation in water vapour-containing environments examined with Raman imaging and labelled oxygen;Mermoux;Corros. Sci.,2021

5. Fauvet, P. (2012). Nuclear Corrosion Science and Engineering, Woodhead Publishing.

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3