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在-4基板上制造的涂层的腐蚀

Florentina Golgovici¹, Diana Diniași^1,2, Paul Pavel Dincă³

¹Department of General Chemistry, National University of Science and Technology Politehnica Bucharest, Splaiul Independentei Street, No. 313, 060042 Bucharest, Romania.

Materials (Basel, Switzerland)

|September 28, 2024

概括

涂层的Zircaloy-4显示了核电厂的耐腐蚀性. 这种耐事故燃料覆盖概念在模拟反应堆条件下显著降低了腐蚀率.

科学领域:

核工程核工程是指核工程.
材料科学材料科学材料科学

背景情况:

涂层覆盖是提高核电站安全的一个关键策略.
耐事故燃料 (ATF) 概念旨在在事故条件下提高外性能.

研究的目的:

用磁铁喷射来评估涂的基-4的腐蚀性能.
在模拟的CANDU反应堆主电路条件下评估这种涂层的有效性.

主要方法:

在模拟的CANDU条件下进行腐蚀测试 (LiOH溶液,310°C,10MPa,pH10.5).
使用重力测量分析,金学,X射线衍射 (XRD),扫描电子显微镜 (SEM) 和电化学方法进行评估.

主要成果:

与未涂层合金相比,涂层的Zircaloy-4的质量增加是未涂层合金的四倍,这表明腐蚀减少.
在SEM分析中证实了涂层粘附性和在自封化过程中形态的保存.
XRD确定了Cr2O3作为一种保护性氧化物层.
电化学测试证明了涂层的稳定性和良好的腐蚀性能.

结论:

磁铁喷的涂层显著提高了Zircaloy-4的耐腐蚀性.
涂Cr的外在模拟核反应堆条件下表现出卓越的性能和稳定性,支持其作为ATF概念的作用.

关键词:

耐事故材料耐事故材料涂层是一种涂层.腐蚀腐蚀是一种腐蚀.磁铁子喷射喷射是一种磁铁子喷射.

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