Lithium-lead corrosion behavior of erbium oxide, yttrium oxide and zirconium oxide coatings fabricated by metal organic decomposition
Lithium-lead corrosion behavior of erbium oxide, yttrium oxide and zirconium oxide coatings fabricated by metal organic decomposition
复制标题
金属有机分解氧化铒、氧化钇、氧化锆涂层的锂铅腐蚀行为
DOI：
10.1016/j.jnucmat.2018.06.021
复制
发表时间：
2018
影响因子：
3.1
通讯作者：
T. Chikada
中科院分区：
文献类型：
--
作者：
Moeki Matsunaga;S. Horikoshi;Jumpei Mochizuki;H. Fujita;Y. Hishinuma;K. Isobe;T. Hayashi;T. Terai;Y. Oya;T. Chikada
从有效的燃料循环、更高的运行率和放射性安全的角度来看，氚渗透和结构材料的腐蚀是聚变反应堆液态锂铅包层概念中的关键问题。在这项研究中，研究了陶瓷涂层的锂铅相容性，以开发具有腐蚀保护的氚渗透屏障。在还原活化铁素体/马氏体钢F82H基体上采用金属有机分解法制备氧化铒、氧化钇和氧化锆涂层。在较高的氧浓度下，涂层的腐蚀和分层加速。从表面和截面观察来看，在较低氧浓度下，氧化锆涂层在三种涂层材料中具有最佳的锂铅相容性。然而，锂铅在550 °C下浸泡500 h后的氧化锆涂层比未浸泡的样品表现出更高的氘渗透率。在制备涂层之前，在衬底表面形成氧化铬层，大大改善了氧化铒和氧化钇涂层的锂-铅相容性。涂层的降解主要是由腐蚀和分层引起的，这取决于浸泡温度、测试时间和杂质浓度。
Tritium permeation through and corrosion of structural materials are critical issues in fusion reactor liquid lithium-lead blanket concepts from the viewpoints of an efficient fuel cycle, higher operation rates, and radiological safety. In this study, lithium-lead compatibility of ceramic coatings has been investigated for the development of tritium permeation barriers with corrosion protection. Erbium oxide, yttrium oxide and zirconium oxide coatings were fabricated by a metal organic decomposition method on reduced activation ferritic/martensitic steel F82H substrates. Corrosion and delamination of the coatings were accelerated under a higher oxygen concentration. Under a lower oxygen concentration, zirconium oxide coatings had the best lithium-lead compatibility among three coating materials from surface and cross-sectional observations. However, the zirconium oxide coating after lithium-lead immersion at 550 °C for 500 h showed higher deuterium permeability in comparison to the sample without immersion. Formation of a chromium oxide layer on the surface of the substrate before fabricating the coatings drastically improved the lithium-lead compatibility of erbium oxide and yttrium oxide coatings. Degradation of the coatings was mainly caused by corrosion and delamination depending on immersion temperature, test duration, and impurity concentration.
DOI：
10.1016/j.egypro.2017.09.473
发表时间：
2017-12
期刊：
Energy Procedia
影响因子：
--
作者：
M. Kondo;N. Okubo;E. Irisawa;A. Komatsu;N. Ishikawa;Teruya Tanaka
通讯作者：
M. Kondo;N. Okubo;E. Irisawa;A. Komatsu;N. Ishikawa;Teruya Tanaka