Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Sintering of aluminium and magnesium alloy fiber structures

: Studnitzky, T.; Andersen, O.; Morgenthal, I.; Stephani, G.; Kieback, B.

European Powder Metallurgy Association -EPMA-:
Euro PM 2011 Proceedings. Vol 2: Powder manufacturing & processing, powder injection moulding, miniaturization & nanotechnology, PM lightweight & porous materials, non ferrous PM materials, PM biomaterials : Powder Metallurgy Congress & Exhibition; 9th - 12th October 2011, CCIB Congress Centre, Barcelona, Spain
Shrewsbury: EPMA, 2011
ISBN: 978-1-89907-221-7
European Congress and Exhibition on Powder Metallurgy (EURO PM) <2011, Barcelona>
Powder Metallurgy World Congress & Exhibition (PM) <2011, Barcelona>
Fraunhofer IFAM, Institutsteil Pulvermetallurgie und Verbundwerkstoffe Dresden ()

Due to their oxygen affinity, magnesium and aluminium alloys are difficult-to-sinter materials. Either mechanical destruction or the action of a liquid phase can be used to break up oxide layers and thus achieve the desired diffusion bonds between the individual particles. In the present work, a liquid phase sintering approach is used in conjunction with high-purity particulates and controlled processing conditions in order to achieve a porous sintered product. Appropriate sinter conditions were determined with the help of thermodynamic calculations using the PANDAT software package. As no organic or other auxiliary substances are required, it is possible to obtain high-purity, high-porosity (up to 90 %) parts with exclusively open porosity. Such parts may find application as degradable implants or, in the case of aluminium, as heat exchangers in phase change heat storage or adsorption cooling devices.