Protective and decorative yellow ceramic layer on magnesium alloy surface and preparation method thereof
A technology of ceramic layer and magnesium alloy, which is applied in the field of both protective and functional coatings on metal surfaces, can solve the problems of monotonous micro-arc oxidation coating color, unstable and safety hazards in the preparation process of yellow micro-arc oxidation ceramic layers, etc., and achieve enhanced Good protection performance and stability
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[0031] Example 1:
[0032] In this embodiment, the surface of the magnesium alloy is a light yellow micro-arc oxidation ceramic layer, that is, the micro-arc oxidation ceramic layer is prepared in a small amount of sodium stannate electrolyte, so that the surface layer of the magnesium alloy substrate is formed in situ with a small amount of Sn element. Magnesium oxide porous film, the thickness of the ceramic layer is 10 μm.
[0033] The method for preparing the yellow micro-arc oxidation ceramic layer on the surface of the magnesium alloy includes the following steps:
[0034] Step 1: The wire-cut magnesium alloy samples are first subjected to degreasing and degreasing process, and then ground with different water sandpapers, and then polished and washed with water for micro-arc oxidation treatment.
[0035] Step 2: According to the selection principle of magnesium alloy micro-arc oxidation electrolyte, select chemical reagents to prepare stannate-based micro-arc oxidation electroly...
Example Embodiment
[0038] Example 2:
[0039] In this embodiment, the surface of the magnesium alloy is a yellow micro-arc oxidation ceramic layer, that is, the micro-arc oxidation ceramic layer is prepared by adding a larger amount of sodium stannate electrolyte, so that the surface of the magnesium alloy substrate is formed in situ doped with a larger amount of Sn element The thickness of the ceramic layer is 15μm.
[0040] The method for preparing the yellow micro-arc oxidation ceramic layer on the surface of the magnesium alloy includes the following steps:
[0041] Step 1: The wire-cut magnesium alloy samples are first subjected to degreasing and degreasing process, and then ground with different water sandpapers, and then polished and washed with water for micro-arc oxidation treatment.
[0042] Step 2: According to the selection principle of magnesium alloy micro-arc oxidation electrolyte, select chemical reagents to prepare stannate-based micro-arc oxidation electrolyte, where the concentration ...
Example Embodiment
[0045] Example 3:
[0046] In this embodiment, the surface of the magnesium alloy is a deep yellow micro-arc oxidation ceramic layer, that is, the micro-arc oxidation ceramic layer is prepared by adding a larger amount of sodium stannate electrolyte, so that the surface of the magnesium alloy substrate is formed in situ with more doped Sn element magnesium oxide porous film, the thickness of the ceramic layer is 20 μm.
[0047] The method for preparing the yellow micro-arc oxidation ceramic layer on the surface of the magnesium alloy includes the following steps:
[0048] Step 1: The wire-cut magnesium alloy samples are first subjected to degreasing and degreasing process, and then ground with different water sandpapers, and then polished and washed with water for micro-arc oxidation treatment.
[0049] Step 2: According to the selection principle of magnesium alloy micro-arc oxidation electrolyte, select chemical reagents to prepare stannate-based micro-arc oxidation electrolyte, whe...
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