TY - JOUR N2 - Y2O3-MgO nanocomposites are one of the most promising materials for hypersonic infrared windows and domes due to their excellent optical transmittance and mechanical properties. In this study, influence of the calcination temperature of Y2O3-MgO nanopowders on the microstructure, IR transmittance, and hardness of Y2O3-MgO nanocomposites was investigated. It was found that the calcination temperature is related to the presence of residual intergranular pores and grain size after spark plasma sintering. The nanopowders calcined at 1000°C exhibits the highest infrared transmittance (82.3% at 5.3 μm) and hardness (9.99 GPa). These findings indicated that initial particle size and distribution of the nanopowders are important factors determining the optical and mechanical performances of Y2O3-MgO nanocomposites. L1 - http://www.journals.pan.pl/Content/108037/PDF/AMM-2018-3-57-Seok-Min%20Yong.pdf L2 - http://www.journals.pan.pl/Content/108037 PY - 2018 IS - No 3 EP - 1484 DO - 10.24425/123834 KW - Infrared transparent ceramics KW - Y2O3-MgO nanocomposites KW - sol-gel combustion synthesis KW - calcination KW - sparkplasma sintering A1 - Yong, S.-M. A1 - Choi, D.H. A1 - Lee, K. A1 - Ko, S.-Y. A1 - Cheong, D.-I. PB - Institute of Metallurgy and Materials Science of Polish Academy of Sciences PB - Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences VL - vol. 63 DA - 2018.10.10 T1 - Influence of the Calcination Temperature on the Optical and Mechanical Properties of Y2O3-MgO Nanocomposite SP - 1481 UR - http://www.journals.pan.pl/dlibra/publication/edition/108037 T2 - Archives of Metallurgy and Materials ER -