Abstract
A comparative analysis of the efficiency of zirconia ceramics sintering by thermal method and high-energy electron beam sintering was performed for compacts prepared from commercial TZ-3Y-E grade powder. The electron energy was 1.4MeV. The samples were sintered in the temperature range of 1200–1400°C. Sintering of zirconia ceramics by high-energy accelerated electron beam is shown to reduce the firing temperature by about 200°C compared to that in conventional heating technique. Ceramics sintered by accelerated electron beam at 1200°C is of high density, microhardness and smaller grain size compared to that produced by thermal firing at 1400°C. Electron beam sintering at higher temperature causes deterioration of ceramics properties due to radiation-induced acceleration of high-temperature recrystallization at higher temperatures.
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