Abstract
Nickel-titanium (Ni-Ti) has been widely used to make shape-memory actuator wire for numerous medical industrial applications, with the result that it frequently comes into contact with the human body. High-quality and nontoxic surfaces of this material are therefore in high demand. We used a rotating magnetic field for an ultraprecision finishing of Ni-Ti stent wire biomaterials and evaluated the finishing technique’s efficacy with different processing oils. To create nontoxic Ni-Ti stent wire, the industrial processing oils that are generally used in the surface improvement process were exchanged for oils with low environmental impacts, and processed under rotating magnetic fields at different speeds and processing times. The processing performance of the different oils was compared and verified. The results show that ultraprecision magnetic abrasive finishing that uses olive and castor oil improves surface roughness by 66.67%, and 45.83%, respectively. SEM and energy-dispersive X-ray spectroscopy (EDX) analyses of the finished components (before and after processing) showed that the material composition of the Ni-Ti stent wire was not changed. Additionally, the magnetic abrasive tool composition was not found on the surface of the finished Ni-Ti stent wire. In conclusion, the environmentally friendly oil effectively improved the diameter of the Ni-Ti stent wire, demonstrating the utility of olive and castor oil in ultraprecision finishing of Ni-Ti stent wire biomaterials.
Highlights
Nickel-titanium (Ni-Ti) stent wire is a biomaterial, which have been widely used in various applications including medical devices [1,2,3]
This research aims to elucidate the characteristics of Ni-Ti stent wire produced with an ultraprecision magnetic abrasive finishing (UPMAF) process and a rotating magnetic field according to different processing oils
An UPMAF process using rotating magnetic field was utilized to the high-precision finishing of Ni-Ti stent wire material
Summary
Nickel-titanium (Ni-Ti) stent wire is a biomaterial, which have been widely used in various applications including medical devices [1,2,3]. It is used for endovascular stents, which are useful in treating various heart diseases. Chang et al [8] used the magnetic abrasive finishing process for improving a surface roughness (Ra) of cylindrical SKD11 materials using unbonded magnetic abrasive tools According to his results, the Ra of cylindrical SKD11 materials was enhanced to 0.042 μm Metals 2020, 10, 1309; doi:10.3390/met10101309 www.mdpi.com/journal/metals
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
