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Scaling characteristics and growth of corrosion product films in turbulent flow solution containing saturated CO 2
Author(s) -
Yin Z. F.,
Zhao W. Z.,
Feng Y. R.,
Li Y. H.,
Yin C. X.
Publication year - 2009
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.200805040
Subject(s) - corrosion , materials science , metal , microstructure , partial pressure , scaling , turbulence , metallurgy , chemical engineering , composite material , chemical physics , thermodynamics , chemistry , organic chemistry , geometry , mathematics , physics , oxygen , engineering
In the present study, the surface and cross‐section microstructures of the corrosion films were investigated by SEM and the corrosion rate was measured by mass loss at the various conditions associated with the main influencing factors such as temperature, CO 2 partial pressure, and flow velocity. The results indicated that the three factors have obvious characteristics and the enhanced interactions among the main influencing factors intensively influence the formation and growth of corrosion film. In addition, there were two corrosion mechanisms connected with the forming film and damaging film. A new lattice model was proposed to describe the general aspects concerning the formation of the corrosion film at the metal surface/solution interfaces.