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Corrosion behavior of mechanical clad pipe welded joints in CO 2 ‐saturated seawater under high temperature and high pressure
Author(s) -
Xue F.,
Xu L. Y.,
Jing H. Y.,
Han Y. D.
Publication year - 2013
Publication title -
materials and corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/maco.201206617
Subject(s) - welding , corrosion , materials science , scanning electron microscope , metallurgy , layer (electronics) , x ray photoelectron spectroscopy , seawater , energy dispersive x ray spectroscopy , composite material , artificial seawater , chemical engineering , oceanography , engineering , geology
In the present study, a new welding procedure was developed according to the welding difficulties of mechanical clad pipe. The effect of temperature on the corrosion product layer of stainless steel welded joints exposed to a CO 2 ‐containing solution was investigated. The measurement techniques, such as scanning electron microscopy with energy dispersive spectrometry, X‐ray diffraction, and X‐ray photoelectron spectroscopy, were used to systematically characterize the morphology and composition of the corrosion product layer. The corrosion rates were calculated by weight loss method. The corrosion mechanisms are studied and discussed. The results showed that temperature is an important factor in the corrosion rate of mechanical clad pipe welded joints.