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Recent Progress in Electroless Ni Coatings for Magnesium Alloys

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Figure

Figure 1. Surface morphology showing deep holes of Mg alloy AZ31 after acid pickling with 110mL/L HNO3 and 125g/L CrO3 for (a) 30s, (b) 60s
Figure 2.  Typical microhardness of some commercial Mg alloys and electroless Ni coatings *: Result is in knoop microhardness scale
Table 1. List of corrosion evaluation of EN coatings on Mg alloys substrates
Figure 3. Schematic diagram of two types of multi-layer coatings on Mg substrate (a) High corrosion resistance layer as top layer  (b) High corrosion resistance layer as bottom layer
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