期刊
CORROSION SCIENCE
卷 53, 期 12, 页码 3914-3922出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2011.07.024
关键词
Oxidation; Alloy; Ion implantation; Kinetic parameters; TEM; SIMS
Oxidation of Alloy 690 in PWR primary water conditions has been investigated, considering particularly the role played by subsurface structural defects. To simulate a defective surface state, Xe implantation has been set up on samples. Corrosion experiments were thereafter performed in a corrosion loop simulating the PWR medium with durations between 24 h and 1000 h. Microstructural observations and NRA measurements underlined the role played by defects on the crystallinity of the continuous oxide spinel layer, on the nucleation of Cr(2)O(3) nodules and on the oxidation rate. The higher defects concentration seemed to modify the oxygen diffusion in the oxide scale. (C) 2011 Elsevier Ltd. All rights reserved.
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