This title appears in the Scientific Report :
2012
Please use the identifier:
http://hdl.handle.net/2128/5168 in citations.
Pulvermetallurgische Herstellung von porösem Titan und von NiTi-Legierungen für biomedizinische Anwendungen
Pulvermetallurgische Herstellung von porösem Titan und von NiTi-Legierungen für biomedizinische Anwendungen
In the present work, powder metallurgical processing routes were developed, which enable the net-shape manufacturing of porous titanium implants as well as NiTi implants with fully pronounced shape memory behaviour. Porous implants are attractive due to an improved fixation in the human skeleton if...
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Personal Name(s): | Bram, Martin (Corresponding author) |
---|---|
Contributing Institute: |
Werkstoffsynthese und Herstellungsverfahren; IEK-1 |
Imprint: |
Jülich
Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag
2012
|
Physical Description: |
X, 238 p. |
Dissertation Note: |
Habilitationsschrift, Universität Bochum, 2013 |
ISBN: |
978-3-89336-866-2 |
Document Type: |
Habil / Postdoctoral Thesis (Non-german Habil) Book |
Research Program: |
Fuel Cells |
Series Title: |
Schriften des Forschungszentrums Jülich : Energie & Umwelt / Energy & Environment
171 |
Subject (ZB): | |
Link: |
OpenAccess |
Publikationsportal JuSER |
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520 | |a In the present work, powder metallurgical processing routes were developed, which enable the net-shape manufacturing of porous titanium implants as well as NiTi implants with fully pronounced shape memory behaviour. Porous implants are attractive due to an improved fixation in the human skeleton if the bone grows into the open porosity. Furthermore, adaption of Young’s modulus reduces the risk of stress-shielding to a minimum. Implants and biomedical devices made of NiTi are well known for their unique mechanical properties, which are either based on shape memory effect or pseudoelasticity. For both class of materials, conventional manufacturing by ingot metallurgy with subsequent hot or cold working and mechanical machining is difficult to conduct due to the fact that porosity and shape memory properties cause enhanced tool wear. In addition to a comprehensive description of the processing technologies developed in this work, basic characterisation of specific mechanical and biological properties was conducted. Results achieved were discussed considering related literature. Applicability under industrial conditions was evaluated. The potential of powder metallurgical processing of these materials was demonstrated on a couple of implant prototypes like acetabular cup, spine implant for vertebral disc replacement, dental implant and foot staple. A highlight of the work was licensing of the space holder method to Synthes Company. In 2007, Synthes launched a spine implant on market, which was manufactured with a gradient in porosity using this technology. | ||
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