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Development of nitinol stents: etching experiments

Katona, Bálint and Nagy, Péter and Bognár, Eszter and Hirschberg, Kristóf (2013) Development of nitinol stents: etching experiments. MATERIALS SCIENCE FORUM, 729. pp. 240-245. ISSN 0255-5476

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Abstract

The present study focus on the chemical etching of shape memory nickel-titanium (nitinol) alloy stents made by laser cutting. Application of nitinol stents widely spread in case of atherosclerosis of peripheral vessels. This type of stent has to have appropriate surface quality, flexibility and strength. The aim of chemical etching is removing the burr, which arises during the laser cutting. Etching is one step of the production of stents. The appropriate parameters allow the laser burned surface and most of protruding material removing without significant damage of stent shape. During these experiments etching time was changed. After etching the cross section area was determined by metallographic examinations. The results of the examinations show the relationship between the etching time and the cross-section area. The analysis of measurement data revealed the change of etching velocity. Before and after etching the samples was examined by scanning electron microscopy (SEM). The different surfaces also were compared and the findings were discussed.

Item Type: Article
Subjects: T Technology / alkalmazott, műszaki tudományok > TA Engineering (General). Civil engineering (General) / általános mérnöki tudományok
T Technology / alkalmazott, műszaki tudományok > TJ Mechanical engineering and machinery / gépészmérnöki tudományok
Depositing User: Dr. Eszter Bognár
Date Deposited: 25 Sep 2014 19:03
Last Modified: 25 Sep 2014 19:03
URI: http://real.mtak.hu/id/eprint/16846

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