Method for improving corrosion resistance of ZL303 aluminum alloy film
A ZL303, corrosion resistance technology, applied in the field of improving the corrosion resistance of the ZL303 aluminum alloy film layer, can solve the problems of ZL303 aluminum alloy micro-arc oxidation without research, achieve high thickness and hardness, improve corrosion resistance, and increase thickness and the effect of hardness
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[0015] Example:
[0016] ZL303 aluminum alloy was used as the base material in the experiment. Preparing Na 2 Si0 3 The base electrolyte, the composition of which is Na 2 Si0 3 10g / L,Na 2 WO 4 2g / L, NaOH 2g / L, H 2 0 2 4 ml / L, and then ZnO was added to the electrolyte in a certain proportion. The amount of ZnO added is shown in Table 1.
[0017] Table 1 List of samples of mixed additives
[0018] Sample serial number Nano ZnO additive content (g / L) 0 # 0 1 # 2 2 # 3 3 # 4 4 # 2 5 # 3 6 # 4 7 # 2 8 # 3 9 # 4
[0019] The experiment was carried out using a self-made double-pulse micro-arc oxidation equipment. The experimental voltage is 550V, the time is 50 minutes, the frequency is 400Hz, and the duty cycle is 30%. During the experiment, the solution temperature was kept around 30 °C.
[0020] Use the TT230 coating thickness gauge to measure the average thickness of the ceramic layer: mea...
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