Effects of oxidation on the deuterium permeation behavior of the SIMP steel
Effects of oxidation on the deuterium permeation behavior of the SIMP steel
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DOI：
10.1016/j.ijhydene.2019.05.046
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发表时间：
2019-07
影响因子：
7.2
通讯作者：
Yi-Ming Lyu;Yu-Ping Xu;Hao-Dong Liu;Xin-Dong Pan;Haishan Zhou;Xiao-Chun Li;Yanfen Li;Y. Shan;Qian Xu;Zhongshi Yang;G. Luo
中科院分区：
文献类型：
--
作者：
Yi-Ming Lyu;Yu-Ping Xu;Hao-Dong Liu;Xin-Dong Pan;Haishan Zhou;Xiao-Chun Li;Yanfen Li;Y. Shan;Qian Xu;Zhongshi Yang;G. Luo
低活化铁素体/马氏体(RAFM)钢是未来聚变电站包层的主要候选结构材料。近年来开发了一种新型的9-12%铬变质F/M钢--SIMP钢。用气体驱动渗透(GDP)装置评价了有无氧化层的SIMP钢的渗氢行为。推导并比较了原始SIMP钢和氧化SIMP钢的透气性。利用X射线衍射仪、扫描电子显微镜、能量色散X射线能谱仪对氧化层进行了表征。GDP结果表明，SIMP钢与CLF-1钢具有相似的透氢性能。氧化后的SIMP钢的透氢率比原始SIMP钢的低。氧化过程中的热处理对裸SIMP钢的透氢性能影响有限。横截面扫描电子显微镜照片显示，随着氧化时间的延长，氧化层厚度增加。观察到氧化层是疏松的。X射线衍射和能谱分析结果表明，氧化层主要由铬的氧化物组成，在表面区可以检测到铬的积累。氧化后的SIMP钢表面生成的氧化铬可能是导致其透氢性能降低的原因之一。
Reduced activation ferritic/martensitic (RAFM) steels are the primary candidate structural materials for the blanket in future fusion power plants. In the recent years, a novel 9–12% Cr modified F/M steel named SIMP steel has been developed. The deuterium permeation behavior of the SIMP steel with and without oxide layer has been evaluated using a gas driven permeation (GDP) device. The permeability of original and oxidized SIMP steel has been derived and compared. In order to characterize the oxide layer, X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Energy-Dispersive X-ray Spectroscopy (EDS) experiments have been carried out. GDP results show that the SIMP steel has similar deuterium permeability with the CLF-1 steel. The deuterium permeability of the oxidized SIMP steel is lower than that of the original SIMP steel. Heat treatment during the oxidization process has limited influence on the deuterium permeability of the bare SIMP steel. The cross-section SEM pictures present that with the increase of the oxidation time, the thickness of the oxide layer is increased. The oxide layers are observed to be porous. The results of XRD and EDS show that the oxide layer mainly consists of chromium oxide and accumulation of chromium can be detected in the surface region. The formation of the chromium oxide on the surface of the SIMP steel could be the reason of the decrease of the deuterium permeability of the oxidized SIMP steel.