Microstructure and initial corrosion response of electrodeposited/cold sprayed copper coating interface regions on used nuclear fuel containers

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science Pub Date : 2025-06-08 DOI:10.1016/j.corsci.2025.113103

Liyang Zheng , Jason D. Giallonardo , Mehran Behazin , Jane Y. Howe , Uwe Erb

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引用次数: 0

Abstract

A current design of used nuclear fuel containers incorporates a copper corrosion barrier coating fabricated through a combination of electrodeposition and cold spraying technologies. This study investigates the early-stage corrosion behavior of this copper coating under aerobic conditions in 3 M NaCl solution, with particular emphasis on the electrodeposited/cold sprayed copper interface, which exhibits the highest microstructural heterogeneity with distinct corrosion morphologies. Electrodeposited copper demonstrates texture-dependent corrosion, with an increase in the area fraction of more corrosion resistant {001}-oriented grains following annealing at 350°C or 600°C for one hour. In contrast, in cold sprayed copper, corrosion is more pronounced at splat-splat interfaces due to presence of copper oxide inclusions, though annealing enhances the uniformity of corrosion as a result of oxide coarsening. Additionally, a recrystallized layer at the electrodeposited/cold sprayed copper interface was identified with increased random grain orientations leading to a less localized corrosion behaviour.

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废旧核燃料容器表面电沉积/冷喷涂镀铜界面区域的微观结构及初始腐蚀响应

当前设计的乏燃料容器采用了一种铜腐蚀屏障涂层，这种涂层是通过电沉积和冷喷涂技术相结合而制成的。本研究研究了该铜涂层在3 M NaCl溶液中在好氧条件下的早期腐蚀行为，特别关注了电沉积/冷喷涂铜界面，该界面表现出最高的微观组织非均质性和不同的腐蚀形态。电沉积铜表现出与织构相关的腐蚀，在350°C或600°C退火一小时后，更耐腐蚀的{001}取向晶粒的面积分数增加。相比之下，在冷喷涂铜中，由于氧化铜夹杂物的存在，腐蚀在飞溅-飞溅界面处更为明显，尽管退火由于氧化物粗化而增强了腐蚀的均匀性。此外，在电沉积/冷喷涂铜界面处发现了再结晶层，随机晶粒取向增加，导致局部腐蚀行为减少。

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.