期刊
CORROSION SCIENCE
卷 87, 期 -, 页码 397-406出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2014.06.048
关键词
Carbon steel; SEM; TEM; Acid corrosion; Sulphidation
资金
- Natural Science Foundation of China [51171208, 51271201]
- Science Foundation of China University of Petroleum, Beijing, China [LLYJ-2011-41]
The corrosion products of carbon steel in aqueous H2S environment are investigated. The products, which include mackinawite, cubic FeS, troilite, and pyrite, are characterized through their shapes, chemical compositions and crystal structures. Mackinawite appears with a flake shape. Cubic FeS has a perfect/truncated octahedral shape, and pyrite is framboid-shaped. Flower-shaped troilite is developed from beam- or hexagonal wire-shaped grains by electrostatic interactions along a certain lattice plane. The large single beam-shaped troilite has a growth pattern along the c axis. The corresponding crystal structure and micro-morphology of the corrosion products are provided, and the three-dimensional models of them are generated. (C) 2014 Elsevier Ltd. All rights reserved.
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