Thermal spray coatings are being considered as an alternative to the use of cast iron liners in aluminum engine blocks in the automotive industry. In this research, the coatings are applied directly to the cylinder bore by means of a rotating spray gun. A bench wear test has been developed in which parts of real components are tested (cylinder liners and piston rings) so that the geometry, metallurgy, and representative surface finishes of the engine can be preserved and evaluated. The wear mechanism observed in the thermal spray coatings is a combination of surface fatigue and splat delamination. This paper describes the wear behavior of several thermal spray coatings, and compares them to a gray cast iron, a 390 aluminium alloy and a Nikasil coating, with emphasis on microstructural effects.


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    Title :

    The effect of microstructure on the wear behavior of thermal spray coatings


    Additional title:

    Die Auswirkungen der Mikrostruktur auf das Verschleißverhalten von Oberflächenbeschichtungen die durch thermisches Spritzen aufgebracht worden sind


    Contributors:


    Publication date :

    1994


    Size :

    6 Seiten, 11 Bilder, 2 Tabellen, 13 Quellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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