Method of preparing degradable Fe-Zn alloy pipe for intravascular stent by electroforming
A vascular stent, fe-zn technology, applied in the fields of biomedical materials and electrochemical processing, to achieve the effects of good biocompatibility, good comprehensive mechanical properties, and improved mechanical properties
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[0021] Example 1
[0022] a. Prepare electroforming liquid 2 in electroforming tank 1. Electroforming liquid 2 includes: deionized water 1000g, ferrous chloride 300g, zinc chloride 10g, sodium lauryl sulfate 0.02g, sodium citrate 20g, Ascorbic acid 1.5g, sodium chloride 15g, manganese chloride 5g;
[0023] b. Use sodium hydroxide and hydrochloric acid to adjust the pH of the solution to keep the pH at 3.5;
[0024] c. Use DC power supply for electroforming. The cathode core mold 4 is connected to the negative electrode of the power source. The material used is metal tin wire. The diameter of the wire is 1.8mm. When it is immersed in the electrolyte, the effective length of the uniform Fe-Zn alloy electroforming layer 5 is 40mm. The positive pole of the power supply is a ring-shaped pure iron anode 3, the purity of which is 99.9%. The cathode core mold 4 is placed on the central axis of the annular pure iron anode 3 to ensure the uniformity of the wall thickness of the electroforme...
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[0028] Example 2
[0029] a. Prepare electroforming liquid 2 in electroforming tank 1. Electroforming liquid 2 includes: deionized water 1000g, ferrous chloride 300g, zinc chloride 7g, sodium lauryl sulfate 0.02g, sodium citrate 20g, Ascorbic acid 1.5g, sodium chloride 15g, manganese chloride 5g;
[0030] b. Use sodium hydroxide and hydrochloric acid to adjust the pH of the solution to keep the pH at 3.5;
[0031] c. Use DC power supply for electroforming. The cathode core mold 4 is connected to the negative electrode of the power source. The material used is metal tin wire. The diameter of the wire is 1.8mm. When it is immersed in the electrolyte, the effective length of the uniform Fe-Zn alloy electroforming layer 5 is 40mm. The positive pole of the power supply is a ring-shaped pure iron anode 3, the purity of which is 99.9%. The cathode core mold 4 is placed on the central axis of the annular pure iron anode 3 to ensure the uniformity of the wall thickness of the electroformed...
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