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Scanning the atmosphere of MIM furnaces

: Hartwig, T.; Schroeder, R.

European Powder Metallurgy Association -EPMA-:
World Powder Metallurgy Congress and Exhibition, World PM 2010. Vol.2 : 10th - 14th October 2010, Fortezza da Basso, Florence, Italy
Stockholm: EPMA, 2010
ISBN: 978-1-899072-19-4
World Powder Metallurgy Congress and Exhibition (World PM) <2010, Florence>
Conference Paper
Fraunhofer IFAM ()

Quality assurance for debinding and sintering of MIM parts is certainly a promising research field of investigation in the coming years. So far only few opportunities of looking into an industrial-scale MIM furnace have been developed. By connecting a mass spectrometer to the exhaust system of a batch furnace, we are able to show for the first time what is going on during the debinding and sintering cycle. In this work, the processing of carbonyl iron parts from reduced carbonyl iron powder under neutral and reducing atmospheres was monitored. The spectra show the temperatures and conditions for carburisation and decarburisation.