期刊
CORROSION SCIENCE
卷 52, 期 3, 页码 1098-1101出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2009.11.037
关键词
Inconel Alloy 600; XPS; TEM; Hydrogen enhanced corrosion; Corrosion in high temperature water; Oxide film
资金
- Prediction and Evaluation of Environmentally Assisted Cracking in LWR Structural Materials (PEACE-E program)
- Special Funds for the Major State Basic Research Projects in China [G2006CB605000]
Corrosion test on hydrogen charged and uncharged coupons of Inconel Alloy 600 in high temperature oxygenated water showed more weight loss of charged coupon. Observation of the oxide film by transmission electron microscopy (TEM) showed a defective, thicker oxide layer on charged coupon. Analyses of the oxide film by TEM-energy dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy indicated enrichment of Ni but depletion of Cr in the oxide film on charged coupon. The changes in corrosion behavior and microstructure of the oxide film were most likely due to the hydrogen enhanced preferential dissolution of Cr cations in the water. (C) 2009 Elsevier Ltd. All rights reserved.
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