Title: Recent observations of particulates in Nitinol
Authors: Shabalovskaya, Svetlana ×
Anderegg, J.
Van Humbeeck, Jan #
Issue Date: May-2008
Publisher: Elsevier Sequoia
Series Title: Materials Science and Engineering A, Structural Materials: Properties, Microstructure and Processing vol:481-482 pages:431-436
Abstract: In spite of 40 years of history of Nitinol, the issues regarding its inclusions have been poorly explored. In our brief studies, conducted within the projects on surface design using Auger, energy-dispersive X-ray spectroscopy and scanning electrons microscopy, we discovered that particulates in NiTi medical alloys were always based on Ti: either similar to Ti2NiO oxide, titanium dioxide, titanium carbide or oxidized titanium carbide. Nonmetallic particles were rather brittle, had various shapes and sizes, and revealed different solubility in chemical solutions. The matrix material surrounding inclusions showed a tendency to localized corrosion. It was hypothesized that release of inclusion debris in the human body due to corrosion might compromise biocompatibility of Nitinol. (C) 2007 Elsevier B.V. All rights reserved.
ISSN: 0921-5093
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Physical Metallurgy and Materials Engineering Section (-)
× corresponding author
# (joint) last author

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