Impact of chloride and fluoride additions on surface reactivity and passivity of AM60 magnesium alloy in buffer solution
F. El-Taib Heakal; Noura Saad tantawy; O.S.Shehata;
Abstract
The electrochemical behaviour of AM60 alloy was investigated in pH 9.2 borate buffer solution including
anions. The extent of surface reactivity and passivity is always a function of solution composition.
Increasing Cl concentration increases corrosion attack and decreases slightly surface film resistance
(R1). Nevertheless, F addition (>0.01 M) strongly passivates the surface, as it enhances formation of fluorinated
film with superior corrosion resistance. At 0.01 M, fluoride induces surface activation and R1
decreases. Thus, fluoride can efficiently inhibit AM60 corrosion in chloride-containing solution, where
it forms highly protective film with refined structure as confirmed by SEM and EDX examinations
anions. The extent of surface reactivity and passivity is always a function of solution composition.
Increasing Cl concentration increases corrosion attack and decreases slightly surface film resistance
(R1). Nevertheless, F addition (>0.01 M) strongly passivates the surface, as it enhances formation of fluorinated
film with superior corrosion resistance. At 0.01 M, fluoride induces surface activation and R1
decreases. Thus, fluoride can efficiently inhibit AM60 corrosion in chloride-containing solution, where
it forms highly protective film with refined structure as confirmed by SEM and EDX examinations
Other data
Title | Impact of chloride and fluoride additions on surface reactivity and passivity of AM60 magnesium alloy in buffer solution | Authors | F. El-Taib Heakal; Noura Saad tantawy ; O.S.Shehata | Keywords | Magnesium;Passive film;EIS;SEM;Alkaline corrosion | Issue Date | 2012 | Publisher | Elsevier Ltd. | Journal | Corrosion Science | Volume | 64 | Start page | 153 | End page | 163 | DOI | 10.1016/j.corsci.2012.07.011 |
Attached Files
File | Description | Size | Format | Existing users please Login |
---|---|---|---|---|
Impact of chloride and flouride...2012.pdf | 1.57 MB | Adobe PDF | Request a copy |
Similar Items from Core Recommender Database
Items in Ain Shams Scholar are protected by copyright, with all rights reserved, unless otherwise indicated.