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MB8 magnesium alloy surface treatment method

A surface treatment and magnesium alloy technology, applied in the field of electrochemical surface treatment of MB8 magnesium alloy, can solve the problem of long treatment time, and achieve the effect of shortening the surface treatment time

Inactive Publication Date: 2009-10-28
BEIJING JIAOTONG UNIV
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the shortcoming of "long processing time" in the existing MB8 magnesium alloy micro-arc oxidation treatment method, and provide a reasonable AC plasma that can reduce the surface treatment time of MB8 magnesium alloy to 90-120 seconds Bulk micro-arc oxidation treatment method

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  • MB8 magnesium alloy surface treatment method

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Embodiment Construction

[0007] The specific implementation steps of this MB8 magnesium alloy surface treatment method:

[0008] Step 1. Connect the power frequency AC power supply to the input end of the voltage regulator, and use two long wires to connect two pieces of MB8 magnesium alloy workpieces that have been degreased, polished and cleaned to the output end of the voltage regulator respectively;

[0009] Step 2: Potassium fluoride, potassium hydroxide and tap water are mixed at 40°C according to the following proportions: potassium fluoride 1051-1200g / L, potassium hydroxide 371-400g / L to make an alkaline surface treatment solution, Pour into the treatment tank;

[0010] Step 3: Adjust the output voltage of the voltage regulator to 50-61V, place two pieces of MB8 magnesium alloy workpieces at a distance of 20cm, and simultaneously immerse them in the treatment liquid in the treatment tank for AC plasma micro-arc oxidation treatment. form a ceramic layer;

[0011] Step 4, after 90-120 seconds ...

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Abstract

The invention discloses a surface treatment method of MB8 magnesium alloy. In the field of electrochemical surface treatment of MB8 magnesium alloy, a power frequency AC power supply with a voltage of 50-61V controlled by a voltage regulator is used to prepare fluorine-containing magnesium alloy with tap water. In the alkaline treatment solution of potassium chloride 1051-1200g / L and potassium hydroxide 371-400g / L, conduct AC plasma micro-arc oxidation treatment on MB8 magnesium alloy workpiece for 90-120 seconds to make the surface of MB8 magnesium alloy workpiece in situ A 15-35μm thick, uniform and complete ceramic layer is grown. On the premise of ensuring the surface treatment quality of MB8 magnesium alloy, the surface treatment time is shortened, and the "long treatment time" existing in the existing magnesium alloy micro-arc oxidation treatment method is solved. "technical problem.

Description

technical field [0001] The invention relates to an electrochemical surface treatment method of MB8 magnesium alloy. Background technique [0002] Patent No.: 01106741.1, Invention Name: "Magnesium Alloy Surface Treatment Process", described the MB8 magnesium alloy anodic micro-arc oxidation surface treatment method, which can generate a layer of 10 on the MB8 magnesium alloy surface through 10 minutes of micro-arc surface treatment ~15 μm thick ceramic layer. For magnesium alloys, the length of time required for surface treatment directly determines production efficiency, and the shorter the better. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the shortcoming of "long processing time" in the existing MB8 magnesium alloy micro-arc oxidation treatment method, and provide a reasonable AC plasma that can reduce the surface treatment time of MB8 magnesium alloy to 90-120 seconds Bulk micro-arc oxidation treatmen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/30
Inventor 张鹏杜云慧刘汉武
Owner BEIJING JIAOTONG UNIV