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Tailoring Selective Laser Melting Process Parameters for NiTi Implants

Bormann, Therese ; Schumacher, Ralf ; Müller, Bert ; Mertmann, Matthias ; de Wild, Michael

In: Journal of Materials Engineering and Performance, 2012, vol. 21, no. 12, p. 2519-2524

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    Titel
    • Tailoring Selective Laser Melting Process Parameters for NiTi Implants
    Autor
    • Bormann, Therese. Institute for Medical and Analytical Technologies, University of Applied Sciences Northwestern Switzerland, Gründenstrasse 40, 4132, Muttenz, Switzerland
    • Schumacher, Ralf. Institute for Medical and Analytical Technologies, University of Applied Sciences Northwestern Switzerland, Gründenstrasse 40, 4132, Muttenz, Switzerland
    • Müller, Bert. Biomaterials Science Center, University of Basel, c/o University Hospital Basel, 4031, Basel, Switzerland
    • Mertmann, Matthias. Memry GmbH, Am Kesselhaus 5, 79576, Weil am Rhein, Germany
    • de Wild, Michael. Institute for Medical and Analytical Technologies, University of Applied Sciences Northwestern Switzerland, Gründenstrasse 40, 4132, Muttenz, Switzerland
    Dokumententyp
    • Postprint
    Sprache
    • Englisch
    Veröffentlicht in
    • Journal of Materials Engineering and Performance, 2012, vol. 21, no. 12, p. 2519-2524. Springer US; http://www.springer-ny.com
    Andere elektronische Ausgabe
    OAI-PMH-ID
    • oai:doc.rero.ch:310080
    Summary
    Complex-shaped NiTi constructions become more and more essential for biomedical applications especially for dental or cranio-maxillofacial implants. The additive manufacturing method of selective laser melting allows realizing complex-shaped elements with predefined porosity and three-dimensional micro-architecture directly out of the design data. We demonstrate that the intentional modification of the applied energy during the SLM-process allows tailoring the transformation temperatures of NiTi entities within the entire construction. Differential scanning calorimetry, x-ray diffraction, and metallographic analysis were employed for the thermal and structural characterizations. In particular, the phase transformation temperatures, the related crystallographic phases, and the formed microstructures of SLM constructions were determined for a series of SLM-processing parameters. The SLM-NiTi exhibits pseudoelastic behavior. In this manner, the properties of NiTi implants can be tailored to build smart implants with pre-defined micro-architecture and advanced performance