The paper describes the development and evaluation of high pressure (30 - 70 bar) gas nitriding, in ammonia and ammonia/nitrogen gas mixtures, of steel automotive components. The effect of process parameters on the structure, hardness and depth of case are described and discussed. Fast processing times and unprecedented throwing power over complex shapes and down blind, narrow holes, compared with conventional gas nitriding and plasma nitriding, are reported. Microstructural evolution and surface hardening characteristics are discussed. In the case of stainless steels, carefully selected processing conditions lead to excellent surface hardening whilst retaining a high level of corrosion resistance; the microstructural origin of this important result is explained in relation to the roles of nitride precipitation and solid solution hardening.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Process development and benefits of high pressure gas nitriding of ferritic and stainless steels for automotive applications


    Weitere Titelangaben:

    Verfahrensentwicklung und Vorteile des Hochdruck-Gasnitrierens von ferritischen und nichtrostenden Stählen für die Automobilindustrie


    Beteiligte:
    Ashworth, M.A. (Autor:in) / Jacobs, M.H. (Autor:in)


    Erscheinungsdatum :

    1997


    Format / Umfang :

    8 Seiten, 6 Bilder, 7 Quellen



    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch







    Development of ferritic stainless steels for automotive exhaust systems

    Alves, H.J.B. / Carvalho, J.A.N. / Aquino, M.V. et al. | Tema Archiv | 2002


    Ferritic stainless steels for the automotive industry

    Maitrepierre, P. / Veyrac, P. de | Tema Archiv | 1988