Fig. 2. Optical microscopy images of AZ31 Mg alloy after different immersion times in E-painting solution.
Fig. 1. Open circuit potential of AZ31 Mg alloy with immersion time in E-painting solution.
Fig. 3. Change in weight of AZ31 samples after different immersion times in E-painting solution.
Fig. 5. Optical microscopy images of uncured E-paint on electroless painted AZ31 Mg alloy with different electroless immersion times.
Fig. 6. Optical microscopy images of cured E-paint on electroless painted AZ31 Mg alloy with different electroless immersion times.
Fig. 7. Pore size and pore density of cured E-paint on electroless painted AZ31 Mg alloy with different electroless immersion times.
Fig. 8. Optical microscopy images at (a) low and (b) high magnifications after tape test of E-paint on electroless painted AZ31 with different electroless immersion times.
Fig. 9. Surface appearance of scratched E-paint on electroless painted AZ31 Mg alloy with different testing times from 0 to 500 h SST according to ASTM B117.
Fig. 10. Schematics illustration of (a) blister formation adjacent to scratched line and the delamination of paint, and (b) blister formation on porous E-paint layer.
Fig. 4. (a) Total amount of paint deposited on AZ31 by both electroless painting process and E-painting process, or only E-painting process and (b) ratio of Epaint weight/electrical charge of E-painting process on electroless painted AZ31 Mg alloy with different electroless immersion times.
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