Endothermic gas is not an effective protective atmosphere for ferrous sintering at 2350°F. But, strong parts of medium to high carbon content are produced by sintering in a nitrogen-based atmosphere at 2350°F. This nitrogen-based atmosphere must contain a small amount of hydrogen and carbon monoxide. A low level of hydrogen will minimize decarburization of the parts and promote a higher degree of sintering. The carbon monoxide promotes a uniform carbon structure. The use of methane to control carbon potential is difficult due to the high carburizing rate of methane at 2350°F which causes recar-burization of the parts. Small amounts of Cu or Ni can be added to ferrous powder to further improve the strength of the sintered parts. These elements also tend to stabilize the carbon in the parts and allow small amounts of methane to be added to the atmosphere to further improve the strength of the material without producing recarb.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Effect of Atmosphere Composition on Physical Properties in High Temperature Ferrous Sintering


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SAE International Congress and Exposition ; 1982



    Publication date :

    1982-02-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Effect of atmosphere composition on physical properties in high temperature ferrous sintering

    Buck,D.M. / Sibley,A.T. / Air Products and Chemicals,Allentown,US | Automotive engineering | 1982



    Changes in microstructure of ferrous powder metal compacts during high temperature sintering

    Mocarski,S. / Hall,D.W. / Ford Motor,US | Automotive engineering | 1980


    Ferrous High-Temperature Alloys for Exhaust Component Applications

    Sloss, Clayton / Li, Delin | SAE Technical Papers | 2010


    Transport Properties of High-Temperature Jupiter-Atmosphere Components

    Bruno, D. / Laricchiuta, A. | British Library Conference Proceedings | 2009