Accelerated steam corrosion behavior of Fe-ion irradiated RAFM steel: The role of displacement damage. (15th May 2023)

• Record Type: Journal Article
• Authors: Liu, Chao; Qi, Le; Shen, Tielong; Zhang, Hongpeng; Ma, Zhiwei; Yao, Cunfeng; Wang, Zhiguang
• Is Part Of: Corrosion science. Volume 216(2023)
• Publication Date: 2023-05-15
• Subjects: A. Steel -- B. Ion implantation -- B. SEM -- B. TEM -- C. High temperature corrosion; Corrosion and anti-corrosives -- Periodicals; 620.11223
• DOI: 10.1016/j.corsci.2023.111074
• Languages: English
• ISSNs: 0010-938X

Abstract

Abstract: In this study we investigated the accelerated corrosion behavior of Fe-ion irradiated RAFM steel (SIMP) in high-temperature steam. The thickness, elementary composition, surface morphology, crystal structure and microstructure of the formed oxide films were studied. Consistent with the unirradiated sample, the oxide films of the irradiated samples consisted of an outer layer of Fe3 O4, a porous inner layer of Fe-Cr spinel, and an internal oxide zone composed of (Cr, Si)2 O3 . The thickness of the oxide films increased with the increasing displacement damage. Compared with austenitic steels, the increase of corrosion rate of SIMP steel by displacement damage is rather moderate. Highlights: The composition and crystal structure of oxide film was not changed by irradiation. Whether irradiated or not, a double oxide layer with a thin internal oxide zone formed on SIMP steel. The thickness of the oxide film increased with the increasing displacement damage. The increase of corrosion rate of SIMP steel by displacement damage is rather moderate.