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Control of the carbon content in metal hollow sphere structures by variation of the debindering conditions

: Studnitzky, T.; Andersen, O.

Postprint urn:nbn:de:0011-n-439538 (340 KByte PDF)
MD5 Fingerprint: a6ac07f2404ea0a0a8df7aae6046cefd
Erstellt am: 13.07.2006

Singer, R.F. ; Deutsche Forschungsgemeinschaft -DFG-, Bonn:
Cellular metals and polymers, CMaP 2004 : Proceedings of the Symposium on Cellular Metals and Polymers, sponsored by the Deutsche Forschungsgemeinschaft (DFG), held October 12 - 14, 2004, in Fürth, Germany
Uetikon-Zuerich: Trans Tech Publications, 2005
ISBN: 0-87849-491-X
4 S.
Symposium on Cellular Metals and Polymers (CMaP) <2004, Fürth>
Konferenzbeitrag, Elektronische Publikation
Fraunhofer IFAM, Institutsteil Pulvermetallurgie und Verbundwerkstoffe Dresden ()
hollow sphere; carbon content; debindering; 316L

The present paper highlights results from the priority program Cellular Metals of the Deutsche Forschungsgemeinschaft (DFG SPP 1075), which has been published also elsewhere. The knowledge of the mechanical properties of packed hollow spheres is essential for constructing lightweight hollow sphere structures with an adjustable strength to weight ratio. For a better understanding of the mechanics of hollow sphere structures, it is important to determine the microstructure and the mechanical properties of the cell wall. Due to the amount of organic components needed during the manufacturing of the hollow spheres, the control of carbon content in the final product is very important. At high carbon contents, the formation of carbides may lead to embrittlement and insufficient corrosion resistance. Carbothermic reduction with Fe2O3 addition in the cell walls proved to be a promising approach for the effective removal of carbon. Compression tests showed no effect of the carbon removal in the energy consumption of hollow sphere structures produced with the IFAM (Fraunhofer Institute for Manufactur ing and Advanced Materials) route.