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    Indentation Hardness of Surface-Coated Materials

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    A model for the mechanical interaction between a deposited surface film and its substrate during indentation is investigated for a number of material combinations. Linear relationships between the indentation microhardness and the inverse of the indentation diagonal are found for indentations larger than a limiting size, for both coated and uncoated materials. These relationships are used for measuring the hardening effect of a harder coating on a softer substrate and for finding separate hardness values characteristic of the film and the substrate materials.


    indentation, microhardness, coating, microindentation hardness testing

    Author Information:

    Vingsbo, O
    Staff, Uppsala University, Uppsala,

    Hogmark, S
    Staff, Uppsala University, Uppsala,

    Jönsson, B
    Staff member, Kanthal Electroheat AB, Hallstahammar,

    Ingemarsson, A
    Staff, Uppsala University, Uppsala,

    Committee/Subcommittee: E04.05

    DOI: 10.1520/STP32963S