Surface and subsurface Vickers indentation cracks in SiC, Si3N4, and sialon ceramics

S.G. Cook, J.E. King, J.A. Little

    Research output: Contribution to journalArticle

    Abstract

    The nature of subsurface cracks formed under and around Vickers hardness indentations is often assumed rather than identified. Subsurface cracks in four engineering ceramics are revealed using a penetrant technique, and flaw dimensions are recorded. The resulting data are used to investigate several aspects of indentation cracking, such as crack shape, functional relationships between indentation load and flaw dimensions, and the performance of indentation fracture toughness equations. An R curve is constructed for each of the materials. © 1995 The Institute of Materials.
    Original languageEnglish
    Pages (from-to)1093-1098
    Number of pages6
    JournalMaterials Science and Technology
    Volume11
    Issue number11
    DOIs
    Publication statusPublished - Nov 1995

    Fingerprint

    sialon
    indentation
    Indentation
    cracks
    ceramics
    Cracks
    penetrants
    Defects
    Vickers hardness
    defects
    fracture strength
    Fracture toughness
    engineering
    silicon nitride
    curves

    Keywords

    • crack shape
    • engineering ceramic
    • functional relationship
    • indentation fracture toughness
    • indentation load
    • R-curves
    • sialon ceramics
    • subsurface cracks
    • Vickers hardness indentation
    • Vickers indentation cracks
    • ceramic materials
    • cracks
    • fracture toughness
    • silicon carbide
    • Vickers hardness
    • indentation

    Cite this

    Cook, S.G. ; King, J.E. ; Little, J.A. / Surface and subsurface Vickers indentation cracks in SiC, Si3N4, and sialon ceramics. In: Materials Science and Technology. 1995 ; Vol. 11, No. 11. pp. 1093-1098.
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    Surface and subsurface Vickers indentation cracks in SiC, Si3N4, and sialon ceramics. / Cook, S.G.; King, J.E.; Little, J.A.

    In: Materials Science and Technology, Vol. 11, No. 11, 11.1995, p. 1093-1098.

    Research output: Contribution to journalArticle

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