Method for preparing steady-persistence luminous ceramic membrane through magnesium or magnesium alloy surface micro-arc oxidation

A long afterglow luminescence, micro-arc oxidation technology, applied in the direction of anodization, to achieve the effect of tight bonding, repeatable light absorption and luminescence process, and wide application range

Inactive Publication Date: 2014-04-23
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is little research on the combination of magnesium alloy micro-arc oxidation products and luminescent materials in the prior art, and there i

Method used

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  • Method for preparing steady-persistence luminous ceramic membrane through magnesium or magnesium alloy surface micro-arc oxidation
  • Method for preparing steady-persistence luminous ceramic membrane through magnesium or magnesium alloy surface micro-arc oxidation
  • Method for preparing steady-persistence luminous ceramic membrane through magnesium or magnesium alloy surface micro-arc oxidation

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Experimental program
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Embodiment 1

[0028] This embodiment includes the following steps:

[0029] Step 1, use water as solvent to prepare electrolyte, containing 48g of sodium aluminate, 40g of sodium pyrophosphate, 45g of sodium dihydrogen phosphate, 14g of strontium hydroxide, 20g of sodium lauryl sulfate in every liter of electrolyte, stir well The electrolyte is placed in the electrolytic cell;

[0030] Step 2. Put the magnesium alloy to be treated in the electrolyte solution described in step 1 as the anode, and the stainless steel plate as the cathode. Ratio of 15%, under the condition of voltage of 450V constant voltage electrolysis for 30min, grow a layer of uniform long afterglow luminescent ceramic film on the surface of magnesium alloy.

Embodiment 2

[0039] This embodiment includes the following steps:

[0040] Step 1, use water as the solvent to prepare the electrolyte, containing 48g of sodium aluminate, 38g of sodium pyrophosphate, 42g of sodium dihydrogen phosphate, 14g of strontium hydroxide, and 20g of sodium lauryl sulfate in each liter of electrolyte. The electrolyte is placed in the electrolytic cell;

[0041] Step 2. Put the magnesium alloy to be treated in the electrolyte solution described in step 1 as the anode, and the stainless steel plate as the cathode. Ratio of 10%, under the condition of 500V constant voltage electrolysis for 20min, grow a layer of uniform long afterglow luminescent ceramic film on the surface of magnesium alloy.

[0042] In this example, strontium hydroxide, which can ionize strontium ions, and sodium dodecyl sulfate, which can make strontium hydroxide better uniformly disperse in the electrolyte, are added to the micro-arc oxidation electrolyte to prepare long afterglow on the surface...

Embodiment 3

[0044] This embodiment includes the following steps:

[0045] Step 1, use water as the solvent to prepare the electrolyte solution, containing 50g of sodium aluminate, 42g of sodium pyrophosphate, 43g of sodium dihydrogen phosphate, 13g of strontium hydroxide, and 20g of sodium lauryl sulfate in each liter of electrolyte solution. The electrolyte is placed in the electrolytic cell;

[0046] Step 2. Put the magnesium to be treated in the electrolyte solution described in step 1 as the anode, and the stainless steel plate as the cathode, control the temperature of the electrolyte to 8°C, use a pulsed micro-arc oxidation power supply, adjust the pulse frequency to 500Hz, and the duty cycle 25%, under the condition of 550V constant voltage electrolysis for 40min, grow a layer of uniform long afterglow luminous ceramic film on the surface of magnesium.

[0047] In this example, strontium hydroxide, which can ionize strontium ions, and sodium dodecyl sulfate, which can make stronti...

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Abstract

The invention discloses a method for preparing a steady-persistence luminous ceramic membrane through magnesium or magnesium alloy surface micro-arc oxidation. The method comprises the steps that 1, an electrolytic solution is prepared by taking water as a solvent, uniformly stirred and then put into an electrolytic bath; and 2, to-be-treated magnesium or a to-be-treated magnesium alloy is put into the electrolytic solution to serve as an anode; a stainless steel plate serves as a cathode; and the uniform steady-persistence luminous ceramic membrane is grown on the surface of magnesium or the magnesium alloy. According to the method, strontium hydroxide and lauryl sodium sulfate are added to the micro-arc oxidation electrolytic solution, strontium hydroxide can react on the surface of magnesium or the magnesium alloy to be converted into a fluorescent substance, namely strontium aluminate in a micro-plasma arc discharge process during micro-arc oxidation treatment, and strontium aluminate sinters with the ceramic membrane at the moment of high energy reaction into a whole to become one of components in the ceramic membrane, so that the ceramic membrane has the steady-persistence luminous characteristic, and has the advantages of tight combination and uneasiness in falling.

Description

technical field [0001] The invention belongs to the technical field of micro-arc oxidation treatment, and in particular relates to a method for preparing a long afterglow luminescent ceramic film by micro-arc oxidation on the surface of magnesium or magnesium alloy. Background technique [0002] Magnesium alloy is an alloy with the lightest specific gravity used in modern industrial alloys. It has the characteristics of high specific strength, large elastic modulus, good shock absorption, good shock load bearing capacity, and good electromagnetic shielding. It is mainly used in missiles Guidance system, landing hub, engine casing, mobile phone casing and other aviation, aerospace, transportation, and electronics industries. Due to these excellent characteristics of magnesium alloys, the consumption of magnesium alloys in the world is increasing day by day, and the development and research of magnesium and its alloys are also actively carried out in countries all over the wor...

Claims

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Application Information

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IPC IPC(8): C25D11/30
Inventor 陈宏郝建民崔晓陈永楠
Owner CHANGAN UNIV
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