Electroplating solution for directly electrodepositing iron on surface of magnesium alloy and electroplating process thereof

A magnesium alloy and electrodeposition technology, which is applied in the field of surface engineering and surface treatment, can solve the problems of depositing pure iron coating, etc., and achieve the effect of promoting deposition reaction, realizing coating morphology and good bonding force

Active Publication Date: 2020-10-30
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The electroplating solution of the present invention can be directly electrodeposited on the surface of the magnesium alloy to obtain a pure iron coating, and realizes the controllable preparation of the coating morphology, grain size and thickness, etc., and the prepared pure iron coating is dense and uniform, and the iron coating Excellent bonding force with magnesium alloy;

Method used

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  • Electroplating solution for directly electrodepositing iron on surface of magnesium alloy and electroplating process thereof
  • Electroplating solution for directly electrodepositing iron on surface of magnesium alloy and electroplating process thereof
  • Electroplating solution for directly electrodepositing iron on surface of magnesium alloy and electroplating process thereof

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[0044] Example 1:

[0045] The electroplating solution that can be used for direct electrodepositing iron on the surface of magnesium alloy of the present invention and electroplating process concrete operating steps thereof are as follows:

[0046] (1) ultrasonically clean the magnesium alloy to be plated in acetone solution for 8 minutes, and then rinse with deionized water;

[0047] (2) Use 25 at.% phosphoric acid aqueous solution to derust the substrate for 10 seconds, and then rinse with deionized water;

[0048] (3) Preparation of electroplating solution: mix ferrous sulfate 56g / L, sodium citrate 294g / L, sodium fluoride 10g / L, sodium lauryl sulfate 0.01g / L, and sodium pyrophosphate 0.1g / L. It can be prepared as a plating solution, the solvent is deionized water, and the pH is adjusted to 6-8 by ammonia water 20mL / L;

[0049] (4) Put the magnesium alloy of step (2) into the electroplating solution obtained in step (3) for electrodeposition (the anode is ruthenium titani...

Example Embodiment

[0050] Example 2:

[0051] The electroplating solution that can be used for direct electrodepositing iron on the surface of magnesium alloy of the present invention and electroplating process concrete operating steps thereof are as follows:

[0052] (1) ultrasonically clean the magnesium alloy to be plated in acetone solution for 8 minutes, and then rinse with deionized water;

[0053] (2) Use 25 at.% phosphoric acid aqueous solution to derust the substrate for 10 seconds, and then rinse with deionized water;

[0054] (3) Preparation of electroplating solution: mix ferrous sulfate 56g / L, sodium citrate 294g / L, sodium fluoride 10g / L, sodium lauryl sulfate 0.1g / L, and sodium pyrophosphate 30g / L Prepare a plating solution, the solvent is deionized water, adjust the pH to 6-8 with 20mL / L of ammonia water;

[0055] (4) Put the magnesium alloy of step (2) into the electroplating solution obtained in step (3) for electrodeposition (the anode is ruthenium titanium iridium), then cle...

Example Embodiment

[0059] Example 3:

[0060] The electroplating solution that can be used for direct electrodepositing iron on the surface of magnesium alloy of the present invention and electroplating process concrete operating steps thereof are as follows:

[0061] (1) ultrasonically clean the magnesium alloy to be plated in acetone solution for 8 minutes, and then rinse with deionized water;

[0062] (2) Use 25 at.% phosphoric acid aqueous solution to derust the substrate for 10 seconds, and then rinse with deionized water;

[0063] (3) Preparation of electroplating solution: mix ferrous sulfate 56g / L, sodium citrate 147g / L, sodium fluoride 10g / L, sodium lauryl sulfate 0.1g / L, and sodium pyrophosphate 20g / L Prepare a plating solution, the solvent is deionized water, adjust the pH to 6-8 with 20mL / L of ammonia water;

[0064] (4) Put the magnesium alloy of step (2) into the electroplating solution obtained in step (3) for electrodeposition (the anode is ruthenium titanium iridium), then cle...

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Abstract

The invention belongs to the technical field of surface engineering and surface treatment, and discloses an electroplating solution for directly electrodepositing iron on the surface of a magnesium alloy and an electroplating process thereof. The electroplating solution comprises the following components in concentration of 1-300 g/L of water soluble iron/ferrous salt, 1-1000 g/L of citric acid and/or citrate, 1-50 g/L of sodium fluoride, 0.01-200 g/L of a surfactant, 0.1-500 g/L of a co-complexing agent and 1-1000 mL/L of ammonia, and water is used as a solvent. The electroplating solution can be used for electrodepositing the iron on the surface of the magnesium alloy in a one-step method, and a prepared pure iron coating is compact, uniform, good in binding force, good in biocompatibility, degradable and stable in effect, can provide effective corrosion protection for a magnesium alloy matrix, and can also realize controllable preparation of coating morphology, grain size and thickness and the like. The electroplating solution and the electroplating process thereof have the advantages of low cost, simple operation and easiness in large-scale production.

Description

technical field [0001] The invention belongs to the technical field of surface engineering and surface treatment, in particular to an electroplating solution for direct electrodepositing iron on the surface of magnesium alloys and an electroplating process thereof. Background technique [0002] The density and mechanical properties of magnesium and magnesium alloys are close to those of human bones, and they have good biocompatibility and degradability. They have broad application prospects as human implant materials. However, the chemical properties of magnesium are extremely active, which determines that magnesium alloys are extremely prone to corrosion in complex physiological environments rich in chloride ions, so that they lose their integrity before the tissue is fully healed, thus limiting its application. Surface protection treatment can significantly improve the surface corrosion resistance while retaining the inherent properties of magnesium alloys, which has becom...

Claims

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Application Information

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IPC IPC(8): C25D3/20
CPCC25D3/20
Inventor 李庆阳涂小慧李卫
Owner JINAN UNIVERSITY
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