Abstract
A facile chromate-free method to deposit manganese phosphate conversion coatings upon magnesium alloy AM-lite for corrosion protection was developed. Surface treatment to remove the intermetallic particles from surface was applied prior to coating process. Coating nature, including morphology, phase composition, and corrosion resistance in NaCl solution was characterised by using scanning electron microscopy (SEM) equipped with energy dispersive X-ray spectroscopy (EDX), Xray diffraction (XRD), potentiodynamic polarisation and salt spray. The results indicate that the conversion coating is an amorphous structure, containing Mg, O, Mn, and P in a complex surface chemistry. Such surface coating was able to significantly improve the corrosion susceptibility of AMlite alloy.
| Original language | English |
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| Title of host publication | Annual Conference of the Australasian Corrosion Association 2012 |
| Subtitle of host publication | Melbourne, Victoria, Australia; 11-14 November 2012 |
| Place of Publication | Kerrimuir VIC Australia |
| Publisher | Australasian Corrosion Association (ACA) |
| Pages | 630-636 |
| Number of pages | 7 |
| ISBN (Print) | 9781622769698 |
| Publication status | Published - 2012 |
| Event | Australasian Corrosion Association (ACA) Conference 2012: Corrosion and Prevention - Crown Conference Centre, Melbourne, Australia Duration: 11 Nov 2012 → 14 Nov 2012 |
Conference
| Conference | Australasian Corrosion Association (ACA) Conference 2012 |
|---|---|
| Abbreviated title | CP 2012 |
| Country/Territory | Australia |
| City | Melbourne |
| Period | 11/11/12 → 14/11/12 |
| Other | Corrosion Management for a Sustainable World: Transport, Energy, Mining, Life Extension and Modelling |
Keywords
- Conversion coating
- Corrosion resistance
- Magnesium
- Manganese phosphate
- Surface engineering