Optimization of Environment-friendly Electrolytic Polishing of Nitinol Stent

Increasing number of patients with cardiovascular diseases continuously expands the market demand for stents. An environmentally friendly and nontoxic electrolytic polishing solution for stents is proposed to improve the surface quality of the laser cutting stent, eliminate slag, and recast layer. T...

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Bibliographic Details
Published in:International journal of electrochemical science 2021-08, Vol.16 (8), p.210846, Article 210846
Main Authors: Wang, Yongqi, Li, Zhiyong, Wei, Xiuting, Jing, Xuemin, Gong, Zhikang, Liu, Chuan
Format: Article
Language:English
Subjects:
Electrolytic polishing parameters
Environmentally friendly electrolyte
Nitinol stent
Surface morphology
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Summary:Increasing number of patients with cardiovascular diseases continuously expands the market demand for stents. An environmentally friendly and nontoxic electrolytic polishing solution for stents is proposed to improve the surface quality of the laser cutting stent, eliminate slag, and recast layer. The best ratio of electrolyte is determined through experiments. On this basis, the importance of electrolytic polishing parameters was studied and optimized, and the best electrolytic polishing parameters were obtained. At the same time, the material removal rate, microscopic morphology, and surface roughness of the scaffold were investigated, and the removal rate of the bridge width and wall thickness of the scaffold was obtained. After polishing, the surface of the stent was smooth, without slag and recast layer, and the surface roughness reached approximately 10 nanometers.
ISSN:1452-3981
1452-3981
DOI:10.20964/2021.08.48