Phosphorization liquid for zinc or zinc-aluminium alloy
A zinc-aluminum alloy and phosphating solution technology, applied in the field of phosphating solution, can solve the problems of not being able to guarantee the long-term use of materials, not providing phosphating solution products, and lack of corrosion resistance, etc., to achieve low processing costs, good corrosion resistance and Good durability and phosphating effect
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Example 1
A phosphating solution for zinc coating (the coating contains less than 0.1% aluminum), which is made of the following raw materials in weight percentage
Zinc oxide 0.3%
Nitric acid 0.4%
Phosphoric acid 4%
Nickel nitrate 0.03%
Sodium fluoride 0.02%
Water balance.
Example Embodiment
Example 2
A phosphating solution for zinc-aluminum alloy coating (coating layer contains 2-4% aluminum), which is made of the following raw materials in weight percentage
Nitric acid 0.2%
Nitric acid 0.3%
Phosphoric acid 3.5%
Sodium fluoride 0.02%
Sodium fluoride 0.08%
Water balance.
Example Embodiment
Example 3
A phosphating solution for zinc-aluminum alloy coating (coating layer contains 10-15% aluminum), made from the following raw materials in weight percentage
Nitric acid 0.2%
Nitric acid 0.2%
Phosphoric acid 3%
Sodium fluoride 0.02%
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