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Type: Artigo
Title: Corrosion Of Ti6al4v Pins Produced By Direct Metal Laser Sintering
Author: de Damborenea
J. J.; Arenas
M. A.; Larosa
Maria Aparecida; Jardini
Andre Luiz; Zavaglia
Cecilia Amelia de Carvalho; Conde
Abstract: Direct Metal Laser Sintering (DMLS) technique allows the manufacturing a wide variety of medical devices for any type of prosthetic surgery (HIP, dental, cranial, maxillofacial) as well as for internal fixation devices (K-Wires or Steinmann Pins). There are a large number of research studies on DMLS, including microstructural characterization, mechanical properties and those based on production quality assurance but the influence of porosity in the corrosion behavior of these materials not been sufficiently considered. In the present paper, surgical pins of Ti6Al4V have been produced by DMLS. After testing in a phosphate buffered saline solution, the surface of the titanium alloy appeared locally covered by a voluminous white oxide. This unexpected behavior was presumably due to the existence of internal defects in the pins as result of the manufacturing process. The importance of these defects that might act as crevice nucleation sites- has been revealed by electrochemical techniques and confirmed by computed tomography. (C) 2016 Elsevier B.V. All rights reserved.
Subject: Internal Fixation Device
Cyclic Voltammetry
Editor: Elsevier Science BV
Rights: fechado
Identifier DOI: 10.1016/j.apsusc.2016.10.031
Date Issue: 2017
Appears in Collections:Unicamp - Artigos e Outros Documentos

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