Abstract:
:The surface quality of coronary stents has a significant influence on its biocompatibility. Therefore, surface polishing is of paramount importance in the production and application of stents. In the present study, electropolishing is performed on 316LVM steel slotted tube coronary stents. Additionally, acid pickling, as a pretreatment of electropolishing, is also conducted. Gravimetric analysis of the stents (weight loss and strut width change) in the process of acid pickling and electropolishing are done. Qualitative roughness measurements are made to evaluate the stent surface. Electropolished stents are passivated causing chromium enrichment on the surface of the material, thereby enhancing its corrosion resistance. Passivated and electropolished samples are examined using energy dispersive spectrometry. Balloon expanded and crimped profiles of the passivated stents are qualitatively analyzed.
journal_name
J Biomater Appljournal_title
Journal of biomaterials applicationsauthors
Raval A,Choubey A,Engineer C,Kothwala Ddoi
10.1177/0885328205046564subject
Has Abstractpub_date
2005-01-01 00:00:00pages
197-213issue
3eissn
0885-3282issn
1530-8022pii
19/3/197journal_volume
19pub_type
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