In-situ formed Al-AlN sintered composite materials have been developed by the direct nitriding process based on the reaction of the aluminum matrix to nitrogen gas during sintering. A traditional press-sinter(P/S) method, hot extrusion(H/E) and powder forging (P/F) processes are available to consolidate the composite aluminum alloys. Fine AlN particles less than 1 μm in diameter dispersed as hard particles in the material have a significantly strong bonding to the matrix. They have an important role to improve wear resistance equivalent to the hard anodizing or Ni-P plating. The aluminum alloy also shows a low friction coefficient (less than 0.01) under oil lubricating conditions because fine AlN particles make it possible to form oil film at the interface between the counterpart material. The Al-AlN composite material shows an outstanding performance in the application to the automotive components, in particular Automatic Transmission (AT) parts such as valve spools and oil-pump rotors. The material without surface treatments has a high potential to be used in various applications in automotive where good wear resistance and a low friction coefficient are required under oil lubricating conditions.


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    Titel :

    Wear Properties of In-Situ Reacted Al-AlN Composite Sintered Material and Application for Automatic Transmission Parts


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    International Congress & Exposition ; 1999



    Erscheinungsdatum :

    1999-03-01




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch





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