Magnesium alloy surface treatment liquid and surface treatment method

[0047] In some embodiments, taking the preparation of a 1L solution as an example, the preparation method of the magnesium alloy surface treatment solution includes the following steps: weigh 20-40g of oxidant, 75-125g of phosphate, and 10-30g of organic acid salt, and dissolve in 600mL In the water, add a pH regulator to adjust the pH of the solution to 1 to 3, and then make up the solution to 1L.

[0048] In some preferred embodiments, taking the preparation of 1L solution as an example, the preparation method of the magnesium alloy surface treatment solution includes the following steps: weigh 30g of oxidant, 100g of phosphate, and 20g of organic acid salt, dissolve in 600mL of water, and add pH After the regulator adjusts the pH of the solution to 2, make up the solution to 1L.

[0049] The second aspect of the present invention provides a magnesium alloy surface treatment method using the above magnesium alloy surface treatment solution, which comprises the following steps:

[005

[0066] Example 1

[0067] Embodiment 1 provides a magnesium alloy surface treatment liquid, which contains 20 g / L of oxidant, 75 g / L of phosphate, 10 g / L of organic acid salt, and water as the solvent;

[0068] The magnesium alloy surface treatment liquid also contains a pH regulator;

[0069] The pH of the magnesium alloy surface treatment liquid is 2;

[0070] The oxidant is an inorganic oxygen-containing compound, and the inorganic oxygen-containing compound is potassium permanganate (CAS number: 7722-64-7);

[0071] The phosphate is sodium phosphate (CAS number: 7601-54-9);

[0072] The organic acid salt is acetate, and the acetate is sodium acetate (CAS number: 127-09-3);

[0073] The pH adjusting agent is acetic acid (CAS number: 64-19-7).

[0074] This example also provides the preparation method of the above magnesium alloy surface treatment solution, including the following steps: prepare 1L solution, weigh 30g oxidant, 100g phosphate, and 20g organic acid salt, dissolve it in

[0082] Example 2

[0083] Embodiment 2 provides a magnesium alloy surface treatment liquid, which contains 40 g / L of oxidant, 125 g / L of phosphate, 30 g / L of organic acid salt, and the solvent is water;

[0084] The magnesium alloy surface treatment liquid also contains a pH regulator;

[0085] The pH of the magnesium alloy surface treatment liquid is 2;

[0086] The oxidant is an inorganic oxygen-containing compound, and the inorganic oxygen-containing compound is potassium permanganate;

[0087] The phosphate is sodium phosphate;

[0088] The organic acid salt is acetate, and the acetate is sodium acetate;

[0089] The pH adjusting agent is acetic acid.

[0090] This example also provides a method for preparing the above magnesium alloy surface treatment solution, which is similar to Example 1.

[0091] This example also provides a magnesium alloy surface treatment method using the above magnesium alloy surface treatment solution, which is similar to the first embodiment.