Magnesium alloy micro-arc oxidation method and micro-arc oxidation electrolyte
A technology of micro-arc oxidation and magnesium alloy, applied in the direction of anodic oxidation, etc., can solve the problems of high hazard, coating corrosion, easy damage of micro-arc oxidation coating, etc., and achieve small roughness, good corrosion resistance, The effect of uniform micropore distribution
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Embodiment 1
[0049] Magnesium alloy material: AZ31 magnesium alloy sheet
[0050] The magnesium alloy materials were made into samples through the following pretreatments: grinding, cleaning with distilled water, ultrasonic cleaning with acetone, cleaning with distilled water, and drying.
[0051] Electrolyte composition:
[0052] NaOH: 20g / L,
[0053] Na 2 SiO 3 : 35g / L,
[0054] Na 2 B 4 O 7 : 25g / L,
[0055] Sodium tartrate: 3g / L,
[0056] OP-10: 1g / L,
[0057] Microcapsules: 10g / L.
[0058] The preparation steps of microcapsules are as follows:
[0059] (1) Surface modification of halloysite nanotubes: 10 g of halloysite nanotubes were placed in a reaction vessel, and 90 mL of 3mol / L sodium hydroxide solution was added. Subsequently, it was sonicated at 40°C for 2 hours, washed with distilled water until neutral, centrifuged and dried.
[0060] (2) Loading of corrosion inhibitor: take 6 g of the modified halloysite nanotubes obtained in step (1) and place it in a reaction ...
Embodiment 2
[0077] Magnesium alloy material: AZ31 magnesium alloy sheet
[0078] The magnesium alloy materials were made into samples through the following pretreatments: grinding, cleaning with distilled water, ultrasonic cleaning with acetone, cleaning with distilled water, and drying.
[0079] Electrolyte composition:
[0080] NaOH: 70g / L,
[0081] Na 2 SiO 3 : 15g / L,
[0082] Na 2 B 4 O 7 : 10g / L,
[0083] Sodium tartrate: 8g / L,
[0084] OP-10: 0.5g / L,
[0085] Microcapsules: 2g / L.
[0086] The preparation of microcapsules adopts the layer-by-layer self-assembly method, and the steps are as follows:
[0087] (1) Surface modification of halloysite nanotubes: 10 g of halloysite nanotubes were placed in a reaction vessel, and 70 mL of 5mol / L sodium hydroxide solution was added. Subsequently, it was sonicated at 30 °C for 0.5 h, washed with distilled water until neutral, centrifuged and dried.
[0088] (2) Loading of the corrosion inhibitor: take 6g of the modified halloysite...
Embodiment 3
[0105] Magnesium alloy material: AZ31 magnesium alloy sheet
[0106] The magnesium alloy materials were made into samples through the following pretreatments: grinding, cleaning with distilled water, ultrasonic cleaning with acetone, cleaning with distilled water, and drying.
[0107] Electrolyte composition:
[0108] NaOH: 50g / L,
[0109] Na 2 SiO 3 : 20g / L,
[0110] Na 2 B 4 O 7 : 40g / L,
[0111] Sodium tartrate: 6g / L,
[0112] OP-10: 2g / L,
[0113] Microcapsules: 6g / L.
[0114] The preparation of microcapsules adopts the layer-by-layer self-assembly method, and the steps are as follows:
[0115] (1) Surface modification of halloysite nanotubes: 10 g of halloysite nanotubes were placed in a reaction vessel, and 45 mL of 1 mol / L sodium hydroxide solution was added. Subsequently, it was sonicated at 50°C for 2 hours, washed with distilled water until neutral, centrifuged and dried.
[0116] (2) Loading of corrosion inhibitor: take 6g of modified halloysite nanotub...
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