PM parts sintered state improvement achieved by carbon source selection
Paper i proceeding, 2013

In this work primary synthetic graphite, natural graphite and carbon black as carbon sources for PM parts sintering are compared. In order to highlight the different behaviour in demanding applications, special focus is on Cr-alloyed PM steels. Interrupted sintering trials have been run on specimens that were analysed both by advanced techniques (HR SEM, EDX) and Light Optical Microscopy, highlighting how sintering process rate can be positively affected by carbon source selection. Confirmation from tests run on Iron-Copper-Carbon is also presented. Implications for production of different typologies of PM parts is are also discussed. Test results on Key properties like Dimensional Stability (within one lot and lot-to-lot), Mechanical Performance (in terms of macro-Hardness, Tensile Rupture Strength) and solid-state Lubrication are also displayed.

surface oxide

carbon dissolution

carbon black

graphite

oxide reduction

alloyed sintered steels

Författare

L. Alzati

R. Gilardi

Eduard Hryha

Chalmers, Material- och tillverkningsteknik, Yt- och mikrostrukturteknik

Aimn Hadhud

Chalmers, Material- och tillverkningsteknik, Yt- och mikrostrukturteknik

Lars Nyborg

Chalmers, Material- och tillverkningsteknik, Yt- och mikrostrukturteknik

2013 International Conference on Powder Metallurgy and Particulate Materials, PowderMet 2013

516-524

Drivkrafter

Hållbar utveckling

Styrkeområden

Produktion

Ämneskategorier

Metallurgi och metalliska material

ISBN

978-098533973-9

Mer information

Skapat

2017-10-06