Investigation of mechanical properties of granular γ-alumina using experimental nano indentation and nano scratch tests

Abstract The mechanical properties of ceramic granular γ-alumina, including resistance and stability, are examined using Nano indentation scratch tests. In so doing, surface morphology, kind material used, topography, roughness the evaluated a scanning electron microscope, energy-dispersive X-ray spectroscopy atomic force microscopy. To achieve these objectives, initial step involves synthesis γ-alumina nanoparticles with average diameters 1.7 mm. Moreover, elasticity modulus hardness estimated Nanoindentation method under different loads. It is shown that in this coarse about 17 nm on average. Besides, results demonstrate do not follow particular pattern when load increases. other words, increases then decreases but within ranges 200–400 μN. Overall, it concluded obtained to be equal 12.6 GPa 0.433 GPa, respectively. plasticity index alumina also examined, show highly plastic 0.83. Also, nano tests performed two forces obtain γ-alumina. reveal which representative friction coefficient, surges from 0.72 0.9 by increasing indenter force. general, indicate creating leads doubling its Young's modulus, measure stiffness, as result, there notable improvement overall strength.