Interfacial adhesion measurement of a ceramic coating on metal substrate

Pulin Nie, Heping Lv, Tao Zhou, Xun Cai, Paul K. Chu

    Research output: Journal Publications and ReviewsRGC 22 - Publication in policy or professional journal

    11 Citations (Scopus)

    Abstract

    The interfacial adhesion measurement of a ceramic coating on a metal substrate is studied by three-point bending (3PB) technique. In the measurement, interfacial cracks are induced during the 3PB test, and the interfacial energy release rate is calculated from the released energy per unit crack surface area during crack extension under the fixed displacement conditions. A finite element analysis (FEA) model encompassing the plastic behavior of the metal substrate is developed to simulate the 3PB test and extract the energy data. The inputs to the FEA model include the crack length, the maximum and critical loads corresponding to crack initiation, and the mechanical properties of the coating and substrate. A MoB/CoCr ceramic coating/stainless steel substrate system is investigated by the technique for demonstrating the utility of the technique. © FSCT and OCCA 2009.
    Original languageEnglish
    Pages (from-to)391-398
    JournalJournal of Coatings Technology Research
    Volume7
    Issue number3
    DOIs
    Publication statusPublished - May 2010

    Research Keywords

    • Coating
    • Energy release rate
    • Finite element analysis
    • Interfacial adhesion
    • Three-point bending

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