Abstract
The corrosion behavior of super vacuum die-cast AM60B magnesium alloys immersed in a 5 wt% NaCl solution was investigated by slow positron beam technique, XRD, XPS, SEM and potentiodynamic polarization tests. The XRD and XPS results indicated that Mg(OH)2 was main corrosion product in the salt solution. With prolonging the immersion time, a significant decrease of Doppler-broadened annihilation line-width parameter near the surface after corrosion was observed and interpreted that the pre-existing interfacial voids between oxide film and matrix might promote the formation of Mg(OH)2 corrosion layer. Polarization tests found that Mg(OH)2 could provide a temporary protection.
Original language | English |
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Pages (from-to) | 271-280 |
Number of pages | 10 |
Journal | Corrosion Science |
Volume | 106 |
DOIs | |
State | Published - May 1 2016 |
Bibliographical note
Publisher Copyright:© 2016 Elsevier Ltd.
Keywords
- A. Magnesium
- B. SEM
- B. XRD
ASJC Scopus subject areas
- General Chemistry
- General Chemical Engineering
- General Materials Science