Surface Performance and Optimization of Nickel Titanium Alloy Electropolishing Parameters

Nickel titanium alloys are widely used in different fields, such as biomedicine, machinery and electronics, and aerospace, because of their shape memory effect, superelasticity, and corrosion resistance. Surface treatment on nickel titanium alloy is necessary to reduce metal ion released in human ti...

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Bibliographic Details
Published in:International journal of electrochemical science 2021, Vol.16 (7), p.210745, Article 210745
Main Authors: Wang, Yongqi, Wei, Xiuting, Li, Zhiyong, Jing, Xuemin, Gong, Zhikang, Liu, Chuan
Format: Article
Language:English
Subjects:
Electropolishing
Material removal
Nickel titanium alloy pipe
Surface properties
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Summary:Nickel titanium alloys are widely used in different fields, such as biomedicine, machinery and electronics, and aerospace, because of their shape memory effect, superelasticity, and corrosion resistance. Surface treatment on nickel titanium alloy is necessary to reduce metal ion released in human tissues and prevent human poisoning and organ failure. This paper proposes an electropolishing method for optimizing the surface quality of nickel titanium alloy pipes. A hybrid electropolishing solution suitable for nickel titanium alloy pipes was determined through experiments. The four factors affecting the electropolishing process were analyzed and the best polishing parameters were obtained through orthogonal experiment and single factor experiment. Quantitative statistics revealed that the material removal of the electropolishing method is controllable. Finally, a nickel titanium alloy pipe with low surface roughness (40.7 nm) and good surface morphology was obtained.
ISSN:1452-3981
1452-3981
DOI:10.20964/2021.07.23