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Plating method of magnesium and magnesium alloy

A technology of magnesium alloy and electroplating nickel, which is applied in the direction of liquid chemical plating, metal material coating process, coating, etc., can solve the problems of poor bonding between the coating and the surface of magnesium or magnesium alloy, hindering metal deposition, etc., and achieve improved durability Corrosion ability, strengthen the binding force, expand the effect of application

Inactive Publication Date: 2010-02-03
SHENZHEN FUTAIHONG PRECISION IND CO LTD
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  • Abstract
  • Description
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Problems solved by technology

[0003] At present, there are certain difficulties in the electroplating of magnesium and magnesium alloys. The reason is that firstly, the chemical properties of magnesium and magnesium alloys are active, and magnesium oxide will form rapidly on the surface, thereby hindering the deposition of metal during electroplating; It is easy to undergo substitution reaction with other metal ions in the medium, resulting in weak bonding between the coating and the surface of magnesium or magnesium alloy

Method used

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Embodiment Construction

[0012] The electroplating method of magnesium and magnesium alloy of preferred embodiment of the present invention comprises the following steps:

[0013] A magnesium or magnesium alloy substrate is provided. The substrate can be the housing of portable electronic devices such as mobile phones, digital cameras, personal digital assistants, and notebook computers, and can also be the housing of other container devices.

[0014] The magnesium or magnesium alloy substrate is pretreated to clean the surface of the substrate. The pretreatment includes degreasing the surface of the substrate first, and the specific method is: first immersing the substrate in a solution containing degreasing powder for 5-15 minutes. The degreasing powder is a commonly used material for degreasing and cleaning magnesium or magnesium alloys, and can be purchased on the market. The concentration of the degreasing powder in the solution is preferably 150-200g / L, and the temperature of the degreasing so...

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Abstract

A plating method of magnesium and magnesium alloy comprises the following steps: providing a magnesium or magnesium alloy substrate, pretreating the substrate to clean the surface of the substrate; alligatoring the cleaned magnesium or magnesium alloy substrate to ensure that the surface of the substrate is rough; activating the treated magnesium or magnesium alloy substrate; plating nickel to theactivated magnesium or magnesium alloy substrate by using chemical plating; finally electroplating nickel, electroplating copper, electroplating nickel again and electroplating chromium to the obtained magnesium or magnesium alloy substrate in turn.

Description

technical field [0001] The invention relates to an electroplating method for magnesium and magnesium alloys. Background technique [0002] Magnesium and magnesium alloys are widely used in national defense industry, transportation, optical instruments and Electronic device housings and other fields are widely used. But at the same time, due to the characteristics of low electrode potential and high chemical activity, magnesium and magnesium alloys are very prone to electrochemical corrosion and have poor corrosion resistance. This seriously hinders the application of magnesium and magnesium alloys. In order to overcome the above defects, it is usually necessary to perform surface treatment on magnesium and magnesium alloys, such as electroplating, to form a corrosion-resistant, wear-resistant and decorative coating on the surface. [0003] At present, there are certain difficulties in the electroplating of magnesium and magnesium alloys. The reason is that firstly, the ch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F17/00C23C18/32C23C18/18C25D3/42C25D3/56
CPCC25D5/14C23C18/1653C25D5/48C25D3/38C25D5/42C25D3/12C23C18/18C23C18/36C23C18/1844C25D3/06C25D5/627
Inventor 苏忠义陈政师王仁宁屈红军
Owner SHENZHEN FUTAIHONG PRECISION IND CO LTD
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