Showing 1 - 10 results of 10 for search '"Vickers"', query time: 0.06s Refine Results
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    Electron microscopy of crack/particle interactions in Al2O3/SiC nanocomposites by Jiao, S, Jenkins, M, Davidge, R

    Published 1997
    “…Crack/particle interactions in alumina/silicon carbide nanocomposites have been investigated by scanning electron microscopy and transmission electron microscopy, with cracks induced by Vickers microindentation. Intergranular cracks are frequently deflected into grains by SiC particles on grain boundaries inclined to the average direction of crack propagation, This mechanism is proposed to explain the change in the fracture mode from intergranular fracture for monolithic alumina to predominantly transgranular fracture for the nanocomposites. …”
    Conference item
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    Crack deflection and interfacial fracture energies in alumina/SiC and alumina/TiN nanocomposites by Jiao, S, Jenkins, M

    Published 1997
    “…Crack/particle interactions in Al2O3/SiC and Al2O3/TiN nanocomposites have been observed by TEM on samples containing cracks produced by Vickers indentations. No significant crack deflection by intragranular SiC particles or microcracking around nanoparticles was found. …”
    Conference item
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    Mechanisms of failure in porcelain-veneered sintered zirconia restorations by Sui, T, Dragnevski, K, Neo, T, Korsunsky, A

    Published 2013
    “…In addition, it is surmised that the fragility of the prosthesis may result from the high Vickers hardness and the associated low toughness of porcelain.…”
    Conference item
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    Indentation-induced crack interaction in alumina ceramics by Twigg, P, Davidge, R, Riley, F, Franco, A, Roberts, S

    Published 1996
    “…Polycrystalline aluminas of tailored composition and grain size, prepared using liquid-phase sintering aids based on the Al2O3-CaO-SiO2 and Al2O3-MgO-SiO2 systems, have been indented at loads close to their critical fracture limit P*, using closely spaced arrays of low-load Vickers indentations. The propagation of cracks caused by indentation is influenced by internal residual stresses at alumina grain boundaries developed during cooling from the processing temperature, and primarily the result of thermal expansion mismatches between the alpha-Al2O3 crystals of the matrix and an intergranular glass of composition related to that of the sintering aid. …”
    Conference item
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