Magnesium alloy surface blue self pore sealing ceramic layer and preparation method

A technology of ceramic layer and magnesium alloy, applied in the field of preparation of blue micro-arc oxidation ceramic layer, can solve the problem of less development work of blue micro-arc oxidation ceramic layer on magnesium surface, and achieve excellent corrosion resistance and mechanical properties, corrosion resistance Excellent physical and mechanical properties, and the effect of enhancing protective performance

Inactive Publication Date: 2018-05-29
YICHANG HONGJIAN ALUMINUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on the above research work, there are few researches on the development of blue micro-arc oxidation ceramic layer on the surfac...

Method used

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  • Magnesium alloy surface blue self pore sealing ceramic layer and preparation method
  • Magnesium alloy surface blue self pore sealing ceramic layer and preparation method
  • Magnesium alloy surface blue self pore sealing ceramic layer and preparation method

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Embodiment 1

[0029] In this embodiment, the blue self-sealing hole micro-arc oxidation ceramic layer on the surface of the magnesium alloy, that is, after adding a certain amount of K 2 TiF 6 The micro-arc oxidation ceramic layer was prepared in the electrolyte, so that a ceramic layer doped with Ti element was formed in situ on the surface of the magnesium alloy substrate, and the thickness was 10 μm.

[0030] The preparation method of the magnesium alloy blue self-sealing micro-arc oxidation ceramic layer includes the following steps:

[0031] Step 1: After degreasing and degreasing the wire-cut magnesium alloy sample, it is ground with different water sandpaper, and then washed with water after polishing to prepare for micro-arc oxidation treatment.

[0032] Step 2: Prepare the silicate-based micro-arc oxidation electrolyte according to the matching principle of the micro-arc oxidation electrolyte, where K 2 TiF 6 The concentration is 3.5 g / L;

[0033] Step 3: Use a DC pulse micro-a...

Embodiment 2

[0036] In this embodiment, the blue self-sealing hole micro-arc oxidation ceramic layer on the surface of the magnesium alloy, that is, after adding a certain amount of K 2 TiF 6 A micro-arc oxidation ceramic layer was prepared in the electrolyte, so that a magnesium oxide porous film doped with Ti was formed on the surface of the magnesium alloy substrate in situ, and the thickness of the ceramic layer was 10 μm.

[0037] The preparation method of the magnesium alloy blue self-sealing micro-arc oxidation ceramic layer includes the following steps:

[0038] Step 1: After degreasing and degreasing the wire-cut magnesium alloy sample, it is ground with different water sandpaper, and then washed with water after polishing to prepare for micro-arc oxidation treatment.

[0039] Step 2: Prepare the silicate-based micro-arc oxidation electrolyte according to the matching principle of the micro-arc oxidation electrolyte, where K 2 TiF 6 The concentration is 5 g / L;

[0040] Step 3:...

Embodiment 3

[0043] In this embodiment, the blue self-sealing hole micro-arc oxidation ceramic layer on the surface of the magnesium alloy, that is, after adding a certain amount of K 2 TiF 6 The micro-arc oxidation ceramic layer was prepared in the electrolyte, so that a ceramic layer doped with Ti element was formed in situ on the surface of the magnesium alloy substrate, and the thickness was 10 μm.

[0044] The preparation method of the magnesium alloy blue self-sealing micro-arc oxidation ceramic layer includes the following steps:

[0045] Step 1: After degreasing and degreasing the wire-cut magnesium alloy sample, it is ground with different water sandpaper, and then washed with water after polishing to prepare for micro-arc oxidation treatment.

[0046] Step 2: Prepare the silicate-based micro-arc oxidation electrolyte according to the matching principle of the micro-arc oxidation electrolyte, where K 2 TiF 6 The concentration is 10 g / L;

[0047] Step 3: Use a DC pulse micro-ar...

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Abstract

The invention discloses a magnesium alloy surface blue self pore sealing ceramic layer which consists of a Ti-doped magnesium oxide, the thickness of the layer is 5-30 [mu]m, and the content of Ti is0-10 at.%. A preparation method comprises steps of regulating and controlling the contents of coloring agents and electric parameters of micro-arc oxidation electrolyte to realize regulation and control of the contents of doped metal elements in a micro-arc oxidation ceramic layer, a blue micro-arc oxidation ceramic layer is formed by virtue of the light interference action of metal elements, thedoping content of the metal elements is 0-10 at.%, and the thickness of the ceramic layer is 5-30 [mu]m. The ceramic layer has the advantages that the blue ceramic layer has the self pore sealing characteristic, the corrosion resistance and the mechanical properties of the ceramic layer are greatly improved when being compared with those of a conventional magnesium alloy surface white micro-arc oxidation ceramic layer, the ceramic layer is relatively well applicable to industrial popularization and can be applied to fields such as 3C products, decoration, military projects and optical equipment.

Description

technical field [0001] The invention relates to the technical field of protective and decorative coatings on metal surfaces, and in particular to a method for preparing a blue micro-arc oxidation ceramic layer with excellent protective performance on the magnesium surface by using doped elements in the ceramic layer to form light interference. It has great application potential in 3C, decoration, military industry and other fields. Background technique [0002] Magnesium (Magnesium) is an extremely abundant element in nature, and it is also the lightest and most easily machined structural metal. It has many excellent properties, such as high specific strength and specific modulus, good castability, and Weldability, high ductility, high thermal conductivity, high dimensional stability, excellent damping performance, etc. At present, magnesium metal has been widely used in 3C products, and magnesium products are used in mobile phone casings and notebook casings. Due to the s...

Claims

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Application Information

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IPC IPC(8): C25D11/30
CPCC25D11/30C25D11/024
Inventor 周曰政杨魏柳卫兵望运洲
Owner YICHANG HONGJIAN ALUMINUM IND
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