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- W2782872077 abstract "The mechanical properties of near-surface layers of corundum ceramics treated by high-power pulsed ion beam of carbon are investigated. The samples for investigation were prepared from corundum substrate, which is usually used in microelectronic. The ion treatment was carried out at the TEMP-4M facility under the following conditions: an accelerating voltage of 160-200 keV, the current density in the pulse varied within 15-85 A/cm2. It was found that ion irradiation changes the structure and properties of near-surface layers of corundum ceramics. At the same time, melting and erosion of the surface layer takes place. These processes are accompanied by the formation of a network of microcracks. Microcracks are propagated only by the depth of melting layer. The mechanical properties were measured using a NanoTest600 nanohardness testing instrument. It was found that the nanohardness depends of the treatment modes. At a current density of 15A/cm2, with an increase treatment dose, the nanohardness of the irradiated surface layer increases in comparison with the initial value before irradiation. At higher current densities, the nanohardness of irradiated ceramics decreases relatively to the initial value before irradiation. The dependences of nanohardness off the irradiation dose in this case have the view of a curves with a minimum at irradiation doses of 2.5·1014 and 1.3·1014 cm-2, for current densities of 50 and 85 A/cm2, respectively." @default.
- W2782872077 created "2018-01-26" @default.
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- W2782872077 date "2018-01-01" @default.
- W2782872077 modified "2023-10-02" @default.
- W2782872077 title "Influence of a high-power pulsed ion beam on the mechanical properties of corundum ceramics" @default.
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- W2782872077 doi "https://doi.org/10.1088/1757-899x/289/1/012019" @default.
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