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Corrosion characteristics of surface-modified DET magnesium powders
- Issue Date
- 2004
- Publisher
- TRANS TECH PUBLICATIONS LTD
- Keywords
- electrochemical corrosion; surface modified magnesium; potentiodynamic polarization curve; electrochemical impedance spectroscopy (EIS); droplet emulsion technique (DET)
- Citation
- DESIGNING, PROCESSING AND PROPERTIES OF ADVANCED ENGINEERING MATERIALS, PTS 1 AND 2, v.449-4, pp.369 - 372
- Volume
- 449-4
- Start Page
- 369
- End Page
- 372
- ISSN
- 0255-5476
- Abstract
- Magnesium powders having inactive surface layer have been processed easily and intentionally by DET under fluoride, chromate, and bromide salt. The modified surfaces play an important role in preventing contact with active environments to improve corrosion resistance of Magnesium powders; the image of the surface modified powders was observed using SEM. The composition distribution and characteristics was determined and analyzed by using XRD, XPS, and EIS. Compared with bare Magnesium, the Magnesium having chromate modified surface layer showed a more passive behavior such as smaller current density and nobler potential in 4wt% NaCl solution.
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