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Tune the properties of a partially reactive system with SPS technology

Einstellung der Eigenschaften eines partiell reaktiven Systems mit der Funkenentladungsplasmatechnologie
 
: Hutsch, T.; Weißgärber, T.; Schmidt, J.; Kieback, B.

Max-Planck-Institut für Chemische Physik fester Stoffe; Fraunhofer-Institut für Fertigungstechnik und Angewandte Materialforschung -IFAM-, Dresden:
APNFM 2008, Advanced processing for novel functional materials : 23-25 January 2008, International Congress Center Dresden, Germany
Dresden, 2008
pp.450-456
International Conference Advanced Processing of Novel Functional Materials (APNFM) <2008, Dresden>
English
Conference Paper
Fraunhofer IFAM, Institutsteil Pulvermetallurgie und Verbundwerkstoffe Dresden ()
Funkenentladungsplasmasintern; Graphit; Metallmatrix-Verbundwerkstoff; Sintertemperatur; Verweilzeit; Aufheizgeschwindigkeit; Mikrogefüge; Wärmeleitfähigkeit; Wärmeausdehnungskoeffizient; Eisen; Lichtmikroskopie; Rasterelektronenmikroskopie (REM)

Abstract
The manufacturing of novel Fe-based composites reinforced with 60 vol.% graphite with tailored properties was investigated by using SPS method. The correlations between the consolidation parameters (dwell time, sintering temperature and heating rate) and the obtained microstructure and properties (thermal conductivity, density and thermal expansion) are summarized. The SPS technology offers a way to control the content of the reaction product of a partially reactive system during the sinter process displayed in a four times higher thermal conductivity than pure iron. A reduced coefficient of thermal expansion (CTE) lower than 4ppm/K was also detected.

: http://publica.fraunhofer.de/documents/N-128981.html