Surface treatment method used for nickel-free sealing after aluminum or aluminum alloy anode oxidation
An anodic oxidation and surface treatment technology, which is applied in the field of aluminum or aluminum alloy, can solve the problems of harmfulness to the human body and the environment, and achieve the effect of enhancing corrosion resistance and reducing the harm to the human body
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[0043] Example 1:
[0044] The content of each raw material in the nickel-free closed aqueous reaction solution is: (NH4)2ZrF64.5g / l, boric acid 0.8g / l, Na2HPO40.6g / l, NH4HF21.0g / l, thiourea dioxide 3.0g / l, sodium oleate The mass ratio relative to water is 1‰, and the balance is water.
Example Embodiment
[0045] Embodiment 2:
[0046] The content of each raw material in the nickel-free closed aqueous reaction solution is: (NH4)2ZrF64.5g / l, boric acid 0.6g / l, Na2HPO40.4g / l, NH4F1.0g / l, thiourea dioxide 3.0g / l, sodium oleate The mass ratio relative to water is 1‰, and the balance is water.
Example Embodiment
[0047] Embodiment three:
[0048] The content of each raw material in the nickel-free closed aqueous reaction solution is: (NH4)2ZrF64.5g / l, boric acid 0.5g / l, Na2HPO40.5g / l, NH4F0.7g / l, NH4HF20.8g / l, thiourea dioxide 3.0g / l, the mass ratio of sodium oleate to water is 1‰, and the balance is water.
[0049] To sum up, the present invention has no pollution to the environment, reduces the harm of nickel to the human body, and enhances the corrosion resistance of the aluminum or aluminum alloy anode.
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