Corrosion Behaviour of AZ and ZA Magnesium Alloys in Alkaline Chloride Media
Joint Authors
Öteyaka, Mustafa Ö.
Tremblay, Réal
Ghali, Edward
Source
International Journal of Corrosion
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-12-06
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
Corrosion behaviour of AZ and ZA magnesium alloys in untreated, aerated, and deaerated chloride media was investigated.
The influence of impurity, alloying element, and oxygen on corrosion potential, rate, and pitting was examined in alkaline media saturated with Mg(OH)2 at pH 9 and 25°C.
After 8 h immersion, slightly less active corrosion potentials were generally observed in deaerated than oxygen containing solutions.
AZ91D and ZA104 alloys recorded much lower corrosion rates in deaerated medium as compared to AZ91E, ZAC 10403 (0.3Ca), and ZACS1040305 (0.3Ca+ 0.5Sr).
Generally, ZAC alloy showed the highest corrosion rate, followed by ZACS alloy, and both showed a constant value in the three media with or without oxygen.
The effect of oxygen is then dependent on the alloy properties and is not a simple acceleration of the cathodic reaction but could cause also inhibition and/or passivation.
Pit depth and distribution were influenced by alloy composition.
The pits were found deeper and more localized on AZ and more uniformly dispersed on ZA alloy surfaces.
American Psychological Association (APA)
Öteyaka, Mustafa Ö.& Ghali, Edward& Tremblay, Réal. 2012. Corrosion Behaviour of AZ and ZA Magnesium Alloys in Alkaline Chloride Media. International Journal of Corrosion،Vol. 2012, no. 2012, pp.1-10.
https://search.emarefa.net/detail/BIM-472728
Modern Language Association (MLA)
Öteyaka, Mustafa Ö.…[et al.]. Corrosion Behaviour of AZ and ZA Magnesium Alloys in Alkaline Chloride Media. International Journal of Corrosion No. 2012 (2012), pp.1-10.
https://search.emarefa.net/detail/BIM-472728
American Medical Association (AMA)
Öteyaka, Mustafa Ö.& Ghali, Edward& Tremblay, Réal. Corrosion Behaviour of AZ and ZA Magnesium Alloys in Alkaline Chloride Media. International Journal of Corrosion. 2012. Vol. 2012, no. 2012, pp.1-10.
https://search.emarefa.net/detail/BIM-472728
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-472728