Method for electroplating magnesium and magnesium alloy
A magnesium alloy and coating technology, which is applied in the field of electroplating of magnesium and magnesium alloys, can solve problems such as hindering metal deposition, increasing the porosity of the coating, and loose bonding of the coating
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Embodiment 1
[0047] Take 100×100×5mm magnesium alloy castings.
[0048] 1. Dehydrogenation. Put the castings in a resistance furnace, control the temperature to 180°C, hold for 1.5h, and perform dehydrogenation treatment to prevent hydrogen embrittlement.
[0049] Component
Content (g / L)
Sodium pyrophosphate (saponification)
Sodium phosphate (descaling, chelating, emulsification)
Sodium tripolyphosphate (softened water, anti-scaling)
Emulsifier polyether 2070 (wetting, penetrating, rolling off)
Deionized water
19
14
7
2
Margin
[0050] The components other than the above-mentioned deionized water are respectively dissolved in deionized water according to the formula ratio, mixed to prepare an aqueous solution, and put into a tank for use.
[0051]The magnesium alloy castings to be processed are immersed in the above-mentioned aqueous solution, and the solution temperature is maintained at 57° C., and the immersion treatment is performed for 9 mi...
Embodiment 2
[0071] Take 100×100×5mm magnesium alloy castings.
[0072] 1. Dehydrogenation. Put the castings in a resistance furnace, control the temperature to 200°C, hold for 2 hours, and perform dehydrogenation treatment.
[0073] Component
Content (g / L)
Sodium pyrophosphate (saponification)
Sodium phosphate (descaling, chelating, emulsification)
Sodium tripolyphosphate (softened water, anti-scaling)
Emulsifier polyether 2070 (wetting, penetrating, rolling off) polyether
Deionized water
twenty three
12
8
3
Margin
[0074] The components other than the above-mentioned deionized water are respectively dissolved in deionized water according to the formula ratio, mixed to prepare an aqueous solution, and put into a tank for use.
[0075] The magnesium alloy castings to be processed are immersed in the above-mentioned aqueous solution, and the temperature of the solution is maintained at 55° C. for 8 minutes.
[0076] 3. Wash with hot water. The ...
Embodiment 3
[0098] Take 100×100×5mm magnesium alloy castings.
[0099] 1. Dehydrogenation. Put the castings in a resistance furnace, control the temperature to 180°C, hold for 2 hours, and perform dehydrogenation treatment.
[0100] Component
Content (g / L)
Sodium pyrophosphate (saponification)
Sodium phosphate (descaling, chelating, emulsification)
Sodium tripolyphosphate (softened water, anti-scaling)
Emulsifier polyether 2070 (wetting, penetrating, rolling off) polyether
Deionized water
20
16
6
1.5
Margin
[0101] The components other than the above-mentioned deionized water are respectively dissolved in deionized water according to the formula ratio, mixed to prepare an aqueous solution, and put into a tank for use.
[0102] The magnesium alloy castings to be processed are immersed in the above-mentioned aqueous solution, and the temperature of the solution is maintained at 56°C for 8 minutes.
[0103] 3. Wash with hot water. The abov...
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