Improvement in Corrosion Resistance of Biomaterial Alumina after 60 keV Nitrogen Ion Implantation

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Abstract
Surface modification of polycrystalline α‐alumina is carried out using ion implantation. Samples were implanted at 60 keV N + ions with different ion doses ranging from 1 × 10 15 to 1 × 10 17 ions/cm 2 . Corrosion resistance is studied in a Ringer solution. The increase in corrosion resistance is due to the compound formation studied using Fourier transform infrared spectroscopy and glancing‐angle X‐ray diffraction techniques. Nanohardness is more at a lower ion dose and decreases at a higher ion dose. Microstrutural investigation shows that the decrease in corrosion resistance and nanohardness at a higher ion dose is due to the damage accumulation at the surface.

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