Ultra-fast densification of highly transparent Y2O3 ceramic with La2O3 as sintering aid by spark plasma sintering
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초록
Highly transparent Y2O3 ceramics were produced using spark plasma sintering (SPS) at 1600 °C and 30 MPa for 5 min. Whenthe SPS process was applied with various amounts of La2O3 as dopant. The specimen doped with 3 mol% La2O3 showed thehighest density, and rapid particle growth and pore growth occurred, exhibiting that the relative density and average grainsize are 99.2% and 17.2 μm, respectively. The specimen showed excellent transmittance of 79.44% in the visible light region(600 nm), resulting that La2O3 would be a useful dopant for improving the transmittance and mechanical properties oftransparent Y2O3 ceramics produced with SPS.
Abstract
Highly transparent Y2O3 ceramics were produced using spark plasma sintering (SPS) at 1600 °C and 30 MPa for 5 min. Whenthe SPS process was applied with various amounts of La2O3 as dopant. The specimen doped with 3 mol% La2O3 showed thehighest density, and rapid particle growth and pore growth occurred, exhibiting that the relative density and average grainsize are 99.2% and 17.2 μm, respectively. The specimen showed excellent transmittance of 79.44% in the visible light region(600 nm), resulting that La2O3 would be a useful dopant for improving the transmittance and mechanical properties oftransparent Y2O3 ceramics produced with SPS.
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