Influence of foaming agents on laser based manufacturing of closed-cell Ti foam

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Pape, F.; Noelke, C.; Kaierle, S.; Haferkamp, H.; Gesing, T. M.: Influence of foaming agents on laser based manufacturing of closed-cell Ti foam. In: Procedia Materials Science 4 (2014), S. 97-102. DOI: https://doi.org/10.1016/j.mspro.2014.07.606

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To cite the version in the repository, please use this identifier: https://doi.org/10.15488/3403

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Sum total of downloads: 177




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Abstract: 
Titanium offers a high specific strength, low density, and excellent corrosion resistance. It finds application in many fields like automotive, aerospace, drilling, and biomedical industries. To improve the adherence of bone cells on implants a rough surface can be of advantage. Such a surface is featured by a foamed stru cture. For achieving a foamed Ti structure, laser induced foami ng was used. In this case, Ti powder is pre mixed with foaming agents. The foaming agents are degraded by laser induced energy and produce gaseous products like carbon dioxide, while the Ti powder is molten by the laser. Due to the fast cooling rate carb on dioxide forms gaseous bubbles in the solidifying material. Mandatory for the foaming agents is that they are biocompatible. Previous studies using the foaming agents CaCO 3 , MgCO 3 , MgTiO 3 , and MgTiO 3 mixed to Ti powder resulted in a porosity of up to 0.3. By varying the content of the foaming agent por osity and pore diameter of the samples were adjusted. It is expected that an increased porosity could be achieved by mixing the foaming agents among each other. The influence of the specific foaming agents and their mixtures on the porosity is pres ented in this work. By mixing the foaming agents together and adding them to the powder, the porosity of the samples was increased compared to only adding one foaming agent to the powder.
License of this version: CC BY-NC-ND 3.0 Unported
Document Type: ConferenceObject
Publishing status: publishedVersion
Issue Date: 2014
Appears in Collections:Naturwissenschaftliche Fakultät

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pos. country downloads
total perc.
1 image of flag of Germany Germany 128 72.32%
2 image of flag of United States United States 22 12.43%
3 image of flag of China China 4 2.26%
4 image of flag of Netherlands Netherlands 3 1.69%
5 image of flag of Sweden Sweden 2 1.13%
6 image of flag of France France 2 1.13%
7 image of flag of Austria Austria 2 1.13%
8 image of flag of Israel Israel 1 0.56%
9 image of flag of Indonesia Indonesia 1 0.56%
10 image of flag of Europe Europe 1 0.56%
    other countries 11 6.21%

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